From cd5bc2fc93371b8a337d9b68188b0f58198a826f Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Thu, 23 Apr 2026 20:00:51 +0100
Subject: [PATCH] test(openai): cover GPT-5.5 defaults

---
 .../openai/openai-codex-provider.test.ts      |  54 ++++++++-
 .../openai/openai-provider.live.test.ts       |  20 +++-
 extensions/openai/openai-provider.test.ts     | 107 ++++++++++++++++++
 extensions/openai/openai.live.test.ts         |   4 +-
 .../provider-catalog.contract-test-support.ts |   6 +-
 extensions/qa-lab/src/character-eval.test.ts  |   4 +-
 extensions/qa-lab/src/cli.runtime.test.ts     |  10 +-
 .../qa-lab/src/model-catalog.runtime.test.ts  |   8 +-
 .../src/model-selection.runtime.test.ts       |   8 +-
 extensions/qa-lab/src/reply-failure.test.ts   |   4 +-
 extensions/qa-lab/src/run-config.test.ts      |  22 ++--
 .../qa-lab/src/scenario-catalog.test.ts       |   8 +-
 .../src/suite-runtime-transport.test.ts       |   6 +-
 qa/frontier-harness-plan.md                   |   8 +-
 .../models/codex-harness-no-meta-leak.md      |   6 +-
 .../gpt54-thinking-visibility-switch.md       |  22 ++--
 .../models/openai-native-web-search-live.md   |   8 +-
 .../models/thinking-slash-model-remap.md      |   8 +-
 .../medium-game-plan-codex-harness.md         |   8 +-
 .../workspace/medium-game-plan-pi-harness.md  |  10 +-
 src/agents/cli-backends.test.ts               |   4 +-
 src/agents/model-auth.profiles.test.ts        |   4 +-
 src/agents/model-compat.test.ts               |  12 +-
 src/agents/models.profiles.live.test.ts       |   2 +-
 .../pi-embedded-runner.cache.live.test.ts     |   2 +-
 src/agents/pi-mcp-style.cache.live.test.ts    |   2 +-
 src/agents/provider-headers.live.test.ts      |   2 +-
 ...imple-completion-runtime.selection.test.ts |   4 +-
 .../reply/agent-runner-execution.test.ts      |   4 +-
 .../reply/agent-runner-memory.test.ts         |   2 +-
 src/commands/agent-command.test-mocks.ts      |   4 +-
 src/commands/agent.acp.test.ts                |   4 +-
 src/commands/auth-choice.test.ts              |   2 +-
 ...re.gateway-auth.prompt-auth-config.test.ts |   4 +-
 .../doctor-cron-store-migration.test.ts       |   4 +-
 src/commands/model-picker.test.ts             |  50 ++++----
 src/commands/models/auth.test.ts              |  10 +-
 src/commands/models/list.configured.test.ts   |   6 +-
 src/commands/models/list.rows.test.ts         |   8 +-
 src/commands/models/list.status.test.ts       |   4 +-
 .../onboard-auth.config-shared.test.ts        |   4 +-
 src/commands/openai-model-default.test.ts     |   2 +-
 src/commands/status-overview-rows.test.ts     |   2 +-
 src/commands/status-overview-values.test.ts   |   4 +-
 src/commands/status.summary.runtime.test.ts   |   6 +-
 src/commands/status.summary.test.ts           |   6 +-
 src/commands/status.test-support.ts           |   4 +-
 src/gateway/gateway-acp-bind.live.test.ts     |   2 +-
 .../gateway-cli-backend.live-helpers.test.ts  |   2 +-
 .../gateway-models.profiles.live.test.ts      |   2 +-
 .../chat.directive-tags.test.ts               |   4 +-
 src/gateway/server-startup.test.ts            |   2 +-
 src/media-understanding/defaults.test.ts      |   2 +-
 src/plugins/config-state.test.ts              |   4 +-
 .../provider-auth-choice-helpers.test.ts      |   4 +-
 src/plugins/provider-runtime.test-support.ts  |  16 ++-
 src/plugins/provider-runtime.test.ts          |   2 +-
 src/plugins/status.test.ts                    |   8 +-
 .../trigger-handling-test-harness.ts          |   4 +-
 test/helpers/plugins/plugin-runtime-mock.ts   |   2 +-
 .../helpers/plugins/provider-auth-contract.ts |   4 +-
 test/helpers/plugins/provider-catalog.ts      |   1 +
 .../plugins/provider-runtime-contract.ts      |  56 +++++++++
 ui/src/ui/views/agents-utils.test.ts          |   8 +-
 ui/src/ui/views/config-quick.test.ts          |   2 +-
 65 files changed, 437 insertions(+), 181 deletions(-)

diff --git a/extensions/openai/openai-codex-provider.test.ts b/extensions/openai/openai-codex-provider.test.ts
index dac350406b9..66b5bf1c3d5 100644
--- a/extensions/openai/openai-codex-provider.test.ts
+++ b/extensions/openai/openai-codex-provider.test.ts
@@ -224,7 +224,7 @@ describe("openai codex provider", () => {
           },
         },
       ],
-      defaultModel: "openai-codex/gpt-5.4",
+      defaultModel: "openai-codex/gpt-5.5",
     });
     expect(result?.profiles[0]?.credential).not.toHaveProperty("idToken");
     expect(result?.profiles[0]?.credential).not.toHaveProperty("accountId");
@@ -329,6 +329,40 @@ describe("openai codex provider", () => {
     });
   });
 
+  it("resolves gpt-5.5 and gpt-5.5-pro with launch pricing and codex-sized runtime cap", () => {
+    const provider = buildOpenAICodexProviderPlugin();
+
+    const model = provider.resolveDynamicModel?.({
+      provider: "openai-codex",
+      modelId: "gpt-5.5",
+      modelRegistry: createSingleModelRegistry(createCodexTemplate({ id: "gpt-5.4" })) as never,
+    });
+    const pro = provider.resolveDynamicModel?.({
+      provider: "openai-codex",
+      modelId: "gpt-5.5-pro",
+      modelRegistry: createSingleModelRegistry(createCodexTemplate({ id: "gpt-5.4-pro" })) as never,
+    });
+
+    expect(model).toMatchObject({
+      id: "gpt-5.5",
+      api: "openai-codex-responses",
+      baseUrl: "https://chatgpt.com/backend-api",
+      contextWindow: 1_000_000,
+      contextTokens: 272_000,
+      maxTokens: 128_000,
+      cost: { input: 5, output: 30, cacheRead: 0, cacheWrite: 0 },
+    });
+    expect(pro).toMatchObject({
+      id: "gpt-5.5-pro",
+      api: "openai-codex-responses",
+      baseUrl: "https://chatgpt.com/backend-api",
+      contextWindow: 1_000_000,
+      contextTokens: 272_000,
+      maxTokens: 128_000,
+      cost: { input: 30, output: 180, cacheRead: 0, cacheWrite: 0 },
+    });
+  });
+
   it("resolves gpt-5.4-pro from a gpt-5.4 runtime template when legacy codex rows are absent", () => {
     const provider = buildOpenAICodexProviderPlugin();
 
@@ -398,7 +432,7 @@ describe("openai codex provider", () => {
     expect(model).not.toHaveProperty("contextTokens");
   });
 
-  it("augments catalog with gpt-5.4 native contextWindow and runtime cap", () => {
+  it("augments catalog with gpt-5.5 and gpt-5.4 native metadata", () => {
     const provider = buildOpenAICodexProviderPlugin();
 
     const entries = provider.augmentModelCatalog?.({
@@ -415,6 +449,22 @@ describe("openai codex provider", () => {
       ],
     } as never);
 
+    expect(entries).toContainEqual(
+      expect.objectContaining({
+        id: "gpt-5.5",
+        contextWindow: 1_000_000,
+        contextTokens: 272_000,
+        cost: { input: 5, output: 30, cacheRead: 0, cacheWrite: 0 },
+      }),
+    );
+    expect(entries).toContainEqual(
+      expect.objectContaining({
+        id: "gpt-5.5-pro",
+        contextWindow: 1_000_000,
+        contextTokens: 272_000,
+        cost: { input: 30, output: 180, cacheRead: 0, cacheWrite: 0 },
+      }),
+    );
     expect(entries).toContainEqual(
       expect.objectContaining({
         id: "gpt-5.4",
diff --git a/extensions/openai/openai-provider.live.test.ts b/extensions/openai/openai-provider.live.test.ts
index a8a59ff4d9e..c2c7d6cf8d2 100644
--- a/extensions/openai/openai-provider.live.test.ts
+++ b/extensions/openai/openai-provider.live.test.ts
@@ -3,7 +3,7 @@ import { describe, expect, it } from "vitest";
 import { buildOpenAIProvider } from "./openai-provider.js";
 
 const OPENAI_API_KEY = process.env.OPENAI_API_KEY ?? "";
-const DEFAULT_LIVE_MODEL_IDS = ["gpt-5.4-mini", "gpt-5.4-nano"] as const;
+const DEFAULT_LIVE_MODEL_IDS = ["gpt-5.5", "gpt-5.4-mini", "gpt-5.4-nano"] as const;
 const liveEnabled = OPENAI_API_KEY.trim().length > 0 && process.env.OPENCLAW_LIVE_TEST === "1";
 const describeLive = liveEnabled ? describe : describe.skip;
 
@@ -18,6 +18,24 @@ type LiveModelCase = {
 
 function resolveLiveModelCase(modelId: string): LiveModelCase {
   switch (modelId) {
+    case "gpt-5.5":
+      return {
+        modelId,
+        templateId: "gpt-5.4",
+        templateName: "GPT-5.4",
+        cost: { input: 5, output: 30, cacheRead: 0, cacheWrite: 0 },
+        contextWindow: 1_000_000,
+        maxTokens: 128_000,
+      };
+    case "gpt-5.5-pro":
+      return {
+        modelId,
+        templateId: "gpt-5.4-pro",
+        templateName: "GPT-5.4 Pro",
+        cost: { input: 30, output: 180, cacheRead: 0, cacheWrite: 0 },
+        contextWindow: 1_000_000,
+        maxTokens: 128_000,
+      };
     case "gpt-5.4":
       return {
         modelId,
diff --git a/extensions/openai/openai-provider.test.ts b/extensions/openai/openai-provider.test.ts
index bd25c3684f1..869c7048a21 100644
--- a/extensions/openai/openai-provider.test.ts
+++ b/extensions/openai/openai-provider.test.ts
@@ -229,6 +229,101 @@ describe("buildOpenAIProvider", () => {
     });
   });
 
+  it("resolves gpt-5.5 and gpt-5.5-pro with launch metadata", () => {
+    const provider = buildOpenAIProvider();
+
+    const model = provider.resolveDynamicModel?.({
+      provider: "openai",
+      modelId: "gpt-5.5",
+      modelRegistry: {
+        find: (_provider: string, id: string) =>
+          id === "gpt-5.4"
+            ? {
+                id,
+                name: "GPT-5.4",
+                provider: "openai",
+                api: "openai-responses",
+                baseUrl: "https://api.openai.com/v1",
+                reasoning: true,
+                input: ["text", "image"],
+                cost: { input: 2.5, output: 15, cacheRead: 0.25, cacheWrite: 0 },
+                contextWindow: 1_050_000,
+                maxTokens: 128_000,
+              }
+            : null,
+      } as never,
+    });
+    const pro = provider.resolveDynamicModel?.({
+      provider: "openai",
+      modelId: "gpt-5.5-pro",
+      modelRegistry: {
+        find: (_provider: string, id: string) =>
+          id === "gpt-5.4-pro"
+            ? {
+                id,
+                name: "GPT-5.4 Pro",
+                provider: "openai",
+                api: "openai-responses",
+                baseUrl: "https://api.openai.com/v1",
+                reasoning: true,
+                input: ["text", "image"],
+                cost: { input: 30, output: 180, cacheRead: 0, cacheWrite: 0 },
+                contextWindow: 1_050_000,
+                maxTokens: 128_000,
+              }
+            : null,
+      } as never,
+    });
+
+    expect(model).toMatchObject({
+      provider: "openai",
+      id: "gpt-5.5",
+      api: "openai-responses",
+      baseUrl: "https://api.openai.com/v1",
+      contextWindow: 1_000_000,
+      maxTokens: 128_000,
+      cost: { input: 5, output: 30, cacheRead: 0, cacheWrite: 0 },
+    });
+    expect(pro).toMatchObject({
+      provider: "openai",
+      id: "gpt-5.5-pro",
+      api: "openai-responses",
+      baseUrl: "https://api.openai.com/v1",
+      contextWindow: 1_000_000,
+      maxTokens: 128_000,
+      cost: { input: 30, output: 180, cacheRead: 0, cacheWrite: 0 },
+    });
+  });
+
+  it("surfaces gpt-5.5 in xhigh and augmented catalog metadata", () => {
+    const provider = buildOpenAIProvider();
+
+    expect(
+      provider
+        .resolveThinkingProfile?.({
+          provider: "openai",
+          modelId: "gpt-5.5",
+        } as never)
+        ?.levels.some((level) => level.id === "xhigh"),
+    ).toBe(true);
+
+    const entries = provider.augmentModelCatalog?.({
+      env: process.env,
+      entries: [{ provider: "openai", id: "gpt-5.4", name: "GPT-5.4" }],
+    } as never);
+
+    expect(entries).toContainEqual(
+      expect.objectContaining({
+        provider: "openai",
+        id: "gpt-5.5",
+        name: "gpt-5.5",
+        reasoning: true,
+        input: ["text", "image"],
+        contextWindow: 1_000_000,
+      }),
+    );
+  });
+
   it("keeps modern live selection on OpenAI 5.2+ and Codex 5.2+", () => {
     const provider = buildOpenAIProvider();
     const codexProvider = buildOpenAICodexProviderPlugin();
@@ -251,6 +346,12 @@ describe("buildOpenAIProvider", () => {
         modelId: "gpt-5.4",
       } as never),
     ).toBe(true);
+    expect(
+      provider.isModernModelRef?.({
+        provider: "openai",
+        modelId: "gpt-5.5",
+      } as never),
+    ).toBe(true);
 
     expect(
       codexProvider.isModernModelRef?.({
@@ -276,6 +377,12 @@ describe("buildOpenAIProvider", () => {
         modelId: "gpt-5.4",
       } as never),
     ).toBe(true);
+    expect(
+      codexProvider.isModernModelRef?.({
+        provider: "openai-codex",
+        modelId: "gpt-5.5",
+      } as never),
+    ).toBe(true);
   });
 
   it("owns replay policy for OpenAI and Codex transports", () => {
diff --git a/extensions/openai/openai.live.test.ts b/extensions/openai/openai.live.test.ts
index 8d6e7f92e51..220f94ed53a 100644
--- a/extensions/openai/openai.live.test.ts
+++ b/extensions/openai/openai.live.test.ts
@@ -17,7 +17,7 @@ import { runRealtimeSttLiveTest } from "../../test/helpers/stt-live-audio.js";
 import plugin from "./index.js";
 
 const OPENAI_API_KEY = process.env.OPENAI_API_KEY ?? "";
-const LIVE_MODEL_ID = process.env.OPENCLAW_LIVE_OPENAI_PLUGIN_MODEL?.trim() || "gpt-5.4-nano";
+const LIVE_MODEL_ID = process.env.OPENCLAW_LIVE_OPENAI_PLUGIN_MODEL?.trim() || "gpt-5.5";
 const LIVE_IMAGE_MODEL = process.env.OPENCLAW_LIVE_OPENAI_IMAGE_MODEL?.trim() || "gpt-image-2";
 const LIVE_VISION_MODEL = process.env.OPENCLAW_LIVE_OPENAI_VISION_MODEL?.trim() || "gpt-4.1-mini";
 const liveEnabled = OPENAI_API_KEY.trim().length > 0 && process.env.OPENCLAW_LIVE_TEST === "1";
@@ -29,6 +29,8 @@ const ModelRegistryCtor = ModelRegistry as unknown as {
 
 function resolveTemplateModelId(modelId: string) {
   switch (modelId) {
+    case "gpt-5.5":
+      return "gpt-5.4";
     case "gpt-5.4":
       return "gpt-5.2";
     case "gpt-5.4-mini":
diff --git a/extensions/openai/test-support/provider-catalog.contract-test-support.ts b/extensions/openai/test-support/provider-catalog.contract-test-support.ts
index fb624690e86..44d9af4e870 100644
--- a/extensions/openai/test-support/provider-catalog.contract-test-support.ts
+++ b/extensions/openai/test-support/provider-catalog.contract-test-support.ts
@@ -1,6 +1,7 @@
 import { beforeEach, describe, it, vi } from "vitest";
 import {
   expectAugmentedCodexCatalog,
+  expectedAugmentedOpenaiCodexCatalogEntriesWithGpt55,
   expectCodexBuiltInSuppression,
   expectCodexMissingAuthHint,
   importProviderRuntimeCatalogModule,
@@ -116,7 +117,10 @@ export function describeOpenAIProviderCatalogContract() {
 
       it("keeps bundled model augmentation wired through the provider runtime", async () => {
         const { augmentModelCatalogWithProviderPlugins } = await contractDepsPromise;
-        await expectAugmentedCodexCatalog(augmentModelCatalogWithProviderPlugins);
+        await expectAugmentedCodexCatalog(
+          augmentModelCatalogWithProviderPlugins,
+          expectedAugmentedOpenaiCodexCatalogEntriesWithGpt55,
+        );
       });
     },
   );
diff --git a/extensions/qa-lab/src/character-eval.test.ts b/extensions/qa-lab/src/character-eval.test.ts
index a799cc93154..b98530d1df4 100644
--- a/extensions/qa-lab/src/character-eval.test.ts
+++ b/extensions/qa-lab/src/character-eval.test.ts
@@ -223,7 +223,7 @@ describe("runQaCharacterEval", () => {
 
     expect(runSuite).toHaveBeenCalledTimes(8);
     expect(runSuite.mock.calls.map(([params]) => params.primaryModel)).toEqual([
-      "openai/gpt-5.4",
+      "openai/gpt-5.5",
       "openai/gpt-5.2",
       "openai/gpt-5",
       "anthropic/claude-opus-4-6",
@@ -254,7 +254,7 @@ describe("runQaCharacterEval", () => {
     ]);
     expect(runJudge).toHaveBeenCalledTimes(2);
     expect(runJudge.mock.calls.map(([params]) => params.judgeModel)).toEqual([
-      "openai/gpt-5.4",
+      "openai/gpt-5.5",
       "anthropic/claude-opus-4-6",
     ]);
     expect(runJudge.mock.calls.map(([params]) => params.judgeThinkingDefault)).toEqual([
diff --git a/extensions/qa-lab/src/cli.runtime.test.ts b/extensions/qa-lab/src/cli.runtime.test.ts
index 71690081841..e9a70464857 100644
--- a/extensions/qa-lab/src/cli.runtime.test.ts
+++ b/extensions/qa-lab/src/cli.runtime.test.ts
@@ -1135,8 +1135,8 @@ describe("qa cli runtime", () => {
       repoRoot: path.resolve("/tmp/openclaw-repo"),
       transportId: "qa-channel",
       providerMode: "live-frontier",
-      primaryModel: "openai/gpt-5.4",
-      alternateModel: "openai/gpt-5.4",
+      primaryModel: "openai/gpt-5.5",
+      alternateModel: "openai/gpt-5.5",
       fastMode: undefined,
       message: "read qa kickoff and reply short",
       timeoutMs: undefined,
@@ -1166,7 +1166,7 @@ describe("qa cli runtime", () => {
   it("defaults manual frontier runs onto Codex OAuth when the runtime resolver prefers it", async () => {
     defaultQaRuntimeModelForMode.mockImplementation((mode, options) =>
       mode === "live-frontier"
-        ? "openai-codex/gpt-5.4"
+        ? "openai-codex/gpt-5.5"
         : defaultQaProviderModelForMode(mode as QaProviderModeInput, options),
     );
 
@@ -1179,8 +1179,8 @@ describe("qa cli runtime", () => {
       repoRoot: path.resolve("/tmp/openclaw-repo"),
       transportId: "qa-channel",
       providerMode: "live-frontier",
-      primaryModel: "openai-codex/gpt-5.4",
-      alternateModel: "openai-codex/gpt-5.4",
+      primaryModel: "openai-codex/gpt-5.5",
+      alternateModel: "openai-codex/gpt-5.5",
       fastMode: undefined,
       message: "read qa kickoff and reply short",
       timeoutMs: undefined,
diff --git a/extensions/qa-lab/src/model-catalog.runtime.test.ts b/extensions/qa-lab/src/model-catalog.runtime.test.ts
index 74c94f5e866..c812d36e1e5 100644
--- a/extensions/qa-lab/src/model-catalog.runtime.test.ts
+++ b/extensions/qa-lab/src/model-catalog.runtime.test.ts
@@ -2,7 +2,7 @@ import { describe, expect, it } from "vitest";
 import { selectQaRunnerModelOptions } from "./model-catalog.runtime.js";
 
 describe("qa runner model catalog", () => {
-  it("filters to available rows and prefers gpt-5.4 first", () => {
+  it("filters to available rows and prefers gpt-5.5 first", () => {
     expect(
       selectQaRunnerModelOptions([
         {
@@ -13,8 +13,8 @@ describe("qa runner model catalog", () => {
           missing: false,
         },
         {
-          key: "openai/gpt-5.4",
-          name: "gpt-5.4",
+          key: "openai/gpt-5.5",
+          name: "gpt-5.5",
           input: "text,image",
           available: true,
           missing: false,
@@ -27,6 +27,6 @@ describe("qa runner model catalog", () => {
           missing: false,
         },
       ]).map((entry) => entry.key),
-    ).toEqual(["openai/gpt-5.4", "anthropic/claude-sonnet-4-5"]);
+    ).toEqual(["openai/gpt-5.5", "anthropic/claude-sonnet-4-5"]);
   });
 });
diff --git a/extensions/qa-lab/src/model-selection.runtime.test.ts b/extensions/qa-lab/src/model-selection.runtime.test.ts
index 2aca8920b70..c182e66459f 100644
--- a/extensions/qa-lab/src/model-selection.runtime.test.ts
+++ b/extensions/qa-lab/src/model-selection.runtime.test.ts
@@ -34,7 +34,7 @@ describe("qa model selection runtime", () => {
     resolveEnvApiKey.mockReturnValue({ apiKey: "sk-test" });
 
     expect(resolveQaPreferredLiveModel()).toBeUndefined();
-    expect(defaultQaRuntimeModelForMode("live-frontier")).toBe("openai/gpt-5.4");
+    expect(defaultQaRuntimeModelForMode("live-frontier")).toBe("openai/gpt-5.5");
     expect(loadAuthProfileStoreForRuntime).not.toHaveBeenCalled();
   });
 
@@ -43,8 +43,8 @@ describe("qa model selection runtime", () => {
       provider === "openai-codex" ? ["openai-codex:user@example.com"] : [],
     );
 
-    expect(resolveQaPreferredLiveModel()).toBe("openai-codex/gpt-5.4");
-    expect(defaultQaRuntimeModelForMode("live-frontier")).toBe("openai-codex/gpt-5.4");
+    expect(resolveQaPreferredLiveModel()).toBe("openai-codex/gpt-5.5");
+    expect(defaultQaRuntimeModelForMode("live-frontier")).toBe("openai-codex/gpt-5.5");
   });
 
   it("keeps the OpenAI live default when stored OpenAI profiles are available", () => {
@@ -53,7 +53,7 @@ describe("qa model selection runtime", () => {
     );
 
     expect(resolveQaPreferredLiveModel()).toBeUndefined();
-    expect(defaultQaRuntimeModelForMode("live-frontier")).toBe("openai/gpt-5.4");
+    expect(defaultQaRuntimeModelForMode("live-frontier")).toBe("openai/gpt-5.5");
   });
 
   it("leaves mock defaults unchanged", () => {
diff --git a/extensions/qa-lab/src/reply-failure.test.ts b/extensions/qa-lab/src/reply-failure.test.ts
index 2b37104cd70..71d5daefa10 100644
--- a/extensions/qa-lab/src/reply-failure.test.ts
+++ b/extensions/qa-lab/src/reply-failure.test.ts
@@ -19,7 +19,7 @@ describe("extractQaFailureReplyText", () => {
   it("classifies explicit provider auth guidance as a failure", () => {
     expect(
       extractQaFailureReplyText(
-        '⚠️ No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.4 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.4.',
+        '⚠️ No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.5 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.5.',
       ),
     ).toContain('No API key found for provider "openai".');
   });
@@ -27,7 +27,7 @@ describe("extractQaFailureReplyText", () => {
   it("classifies curated missing-key guidance as a failure", () => {
     expect(
       extractQaFailureReplyText(
-        "⚠️ Missing API key for OpenAI on the gateway. Use `openai-codex/gpt-5.4` for OAuth, or set `OPENAI_API_KEY`, then try again.",
+        "⚠️ Missing API key for OpenAI on the gateway. Use `openai-codex/gpt-5.5` for OAuth, or set `OPENAI_API_KEY`, then try again.",
       ),
     ).toContain("Missing API key for OpenAI on the gateway.");
   });
diff --git a/extensions/qa-lab/src/run-config.test.ts b/extensions/qa-lab/src/run-config.test.ts
index 8096f87d257..8b4d102ea5b 100644
--- a/extensions/qa-lab/src/run-config.test.ts
+++ b/extensions/qa-lab/src/run-config.test.ts
@@ -45,8 +45,8 @@ describe("qa run config", () => {
   it("creates a live-by-default selection that arms every scenario", () => {
     expect(createDefaultQaRunSelection(scenarios)).toEqual({
       providerMode: "live-frontier",
-      primaryModel: "openai/gpt-5.4",
-      alternateModel: "openai/gpt-5.4",
+      primaryModel: "openai/gpt-5.5",
+      alternateModel: "openai/gpt-5.5",
       fastMode: true,
       scenarioIds: ["dm-chat-baseline", "thread-lifecycle"],
     });
@@ -57,7 +57,7 @@ describe("qa run config", () => {
       normalizeQaRunSelection(
         {
           providerMode: "live-frontier",
-          primaryModel: "openai/gpt-5.4",
+          primaryModel: "openai/gpt-5.5",
           alternateModel: "",
           fastMode: false,
           scenarioIds: ["thread-lifecycle", "missing", "thread-lifecycle"],
@@ -66,8 +66,8 @@ describe("qa run config", () => {
       ),
     ).toEqual({
       providerMode: "live-frontier",
-      primaryModel: "openai/gpt-5.4",
-      alternateModel: "openai/gpt-5.4",
+      primaryModel: "openai/gpt-5.5",
+      alternateModel: "openai/gpt-5.5",
       fastMode: true,
       scenarioIds: ["thread-lifecycle"],
     });
@@ -99,13 +99,13 @@ describe("qa run config", () => {
   });
 
   it("keeps idle snapshots on static defaults so startup does not inspect auth profiles", () => {
-    defaultQaRuntimeModelForMode.mockReturnValue("openai-codex/gpt-5.4");
+    defaultQaRuntimeModelForMode.mockReturnValue("openai-codex/gpt-5.5");
     defaultQaRuntimeModelForMode.mockClear();
 
     expect(createIdleQaRunnerSnapshot(scenarios).selection).toMatchObject({
       providerMode: "live-frontier",
-      primaryModel: "openai/gpt-5.4",
-      alternateModel: "openai/gpt-5.4",
+      primaryModel: "openai/gpt-5.5",
+      alternateModel: "openai/gpt-5.5",
     });
     expect(defaultQaRuntimeModelForMode).not.toHaveBeenCalled();
   });
@@ -138,14 +138,14 @@ describe("qa run config", () => {
   it("prefers the Codex OAuth default when the runtime resolver says it is available", () => {
     defaultQaRuntimeModelForMode.mockImplementation((mode, options) =>
       mode === "live-frontier"
-        ? "openai-codex/gpt-5.4"
+        ? "openai-codex/gpt-5.5"
         : defaultQaProviderModelForMode(mode as QaProviderModeInput, options),
     );
 
     expect(createDefaultQaRunSelection(scenarios)).toEqual({
       providerMode: "live-frontier",
-      primaryModel: "openai-codex/gpt-5.4",
-      alternateModel: "openai-codex/gpt-5.4",
+      primaryModel: "openai-codex/gpt-5.5",
+      alternateModel: "openai-codex/gpt-5.5",
       fastMode: true,
       scenarioIds: ["dm-chat-baseline", "thread-lifecycle"],
     });
diff --git a/extensions/qa-lab/src/scenario-catalog.test.ts b/extensions/qa-lab/src/scenario-catalog.test.ts
index 295366b1f32..fb6532f9faf 100644
--- a/extensions/qa-lab/src/scenario-catalog.test.ts
+++ b/extensions/qa-lab/src/scenario-catalog.test.ts
@@ -137,7 +137,7 @@ describe("qa scenario catalog", () => {
 
     expect(scenario.sourcePath).toBe("qa/scenarios/models/gpt54-thinking-visibility-switch.md");
     expect(config?.requiredLiveProvider).toBe("openai");
-    expect(config?.requiredLiveModel).toBe("gpt-5.4");
+    expect(config?.requiredLiveModel).toBe("gpt-5.5");
     expect(config?.offDirective).toBe("/think off");
     expect(config?.maxDirective).toBe("/think max");
     expect(config?.reasoningDirective).toBe("/reasoning on");
@@ -169,10 +169,10 @@ describe("qa scenario catalog", () => {
       },
     });
     expect(config?.requiredProvider).toBe("openai");
-    expect(config?.requiredModel).toBe("gpt-5.4");
+    expect(config?.requiredModel).toBe("gpt-5.5");
     expect(config?.expectedMarker).toBe("WEB-SEARCH-OK");
     expect(scenario.execution.flow?.steps.map((step) => step.name)).toEqual([
-      "confirms live OpenAI GPT-5.4 web search auto mode",
+      "confirms live OpenAI GPT-5.5 web search auto mode",
       "searches official OpenAI News through the live model",
     ]);
   });
@@ -191,7 +191,7 @@ describe("qa scenario catalog", () => {
     expect(scenario.sourcePath).toBe("qa/scenarios/models/thinking-slash-model-remap.md");
     expect(config?.requiredProviderMode).toBe("live-frontier");
     expect(config?.anthropicModelRef).toBe("anthropic/claude-sonnet-4-6");
-    expect(config?.openAiXhighModelRef).toBe("openai/gpt-5.4");
+    expect(config?.openAiXhighModelRef).toBe("openai/gpt-5.5");
     expect(config?.noXhighModelRef).toBe("anthropic/claude-sonnet-4-6");
     expect(scenario.execution.flow?.steps.map((step) => step.name)).toEqual([
       "selects Anthropic and verifies adaptive options",
diff --git a/extensions/qa-lab/src/suite-runtime-transport.test.ts b/extensions/qa-lab/src/suite-runtime-transport.test.ts
index 433a9697827..71ca82636b1 100644
--- a/extensions/qa-lab/src/suite-runtime-transport.test.ts
+++ b/extensions/qa-lab/src/suite-runtime-transport.test.ts
@@ -35,7 +35,7 @@ describe("qa suite transport helpers", () => {
 
     state.addOutboundMessage({
       to: "dm:qa-operator",
-      text: '⚠️ No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.4 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.4.',
+      text: '⚠️ No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.5 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.5.',
       senderId: "openclaw",
       senderName: "OpenClaw QA",
     });
@@ -117,7 +117,7 @@ describe("qa suite transport helpers", () => {
 
     state.addOutboundMessage({
       to: "dm:qa-operator",
-      text: '⚠️ No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.4 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.4.',
+      text: '⚠️ No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.5 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.5.',
       senderId: "openclaw",
       senderName: "OpenClaw QA",
     });
@@ -164,7 +164,7 @@ describe("qa suite transport helpers", () => {
 
     state.addOutboundMessage({
       to: "dm:qa-operator",
-      text: '⚠️ No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.4 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.4.',
+      text: '⚠️ No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.5 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.5.',
       senderId: "openclaw",
       senderName: "OpenClaw QA",
     });
diff --git a/qa/frontier-harness-plan.md b/qa/frontier-harness-plan.md
index b31c7ddbe33..32857c93758 100644
--- a/qa/frontier-harness-plan.md
+++ b/qa/frontier-harness-plan.md
@@ -37,8 +37,8 @@ GPT baseline:
 ```bash
 pnpm openclaw qa suite \
   --provider-mode live-frontier \
-  --model openai/gpt-5.4 \
-  --alt-model openai/gpt-5.4 \
+  --model openai/gpt-5.5 \
+  --alt-model openai/gpt-5.5 \
   --fast \
   --scenario approval-turn-tool-followthrough \
   --scenario model-switch-tool-continuity \
@@ -104,8 +104,8 @@ GPT manual lane:
 ```bash
 pnpm openclaw qa manual \
   --provider-mode live-frontier \
-  --model openai/gpt-5.4 \
-  --alt-model openai/gpt-5.4 \
+  --model openai/gpt-5.5 \
+  --alt-model openai/gpt-5.5 \
   --fast \
   --message "read QA_KICKOFF_TASK.md, tell me what feels half-baked about this qa mission, and keep it to two short sentences"
 ```
diff --git a/qa/scenarios/models/codex-harness-no-meta-leak.md b/qa/scenarios/models/codex-harness-no-meta-leak.md
index 1d568b003b0..54c262ffef3 100644
--- a/qa/scenarios/models/codex-harness-no-meta-leak.md
+++ b/qa/scenarios/models/codex-harness-no-meta-leak.md
@@ -24,10 +24,10 @@ codeRefs:
   - extensions/qa-lab/src/suite.ts
 execution:
   kind: flow
-  summary: Run with `pnpm openclaw qa suite --provider-mode live-frontier --model codex/gpt-5.4 --alt-model codex/gpt-5.4 --scenario codex-harness-no-meta-leak`.
+  summary: Run with `pnpm openclaw qa suite --provider-mode live-frontier --model codex/gpt-5.5 --alt-model codex/gpt-5.5 --scenario codex-harness-no-meta-leak`.
   config:
     requiredProvider: codex
-    requiredModel: gpt-5.4
+    requiredModel: gpt-5.5
     harnessRuntime: codex
     harnessFallback: none
     expectedReply: QA_LEAK_OK
@@ -47,7 +47,7 @@ execution:
 
 ```yaml qa-flow
 steps:
-  - name: confirms GPT-5.4 Codex harness target
+  - name: confirms GPT-5.5 Codex harness target
     actions:
       - set: selected
         value:
diff --git a/qa/scenarios/models/gpt54-thinking-visibility-switch.md b/qa/scenarios/models/gpt54-thinking-visibility-switch.md
index 9b560f6c606..0bfba9af390 100644
--- a/qa/scenarios/models/gpt54-thinking-visibility-switch.md
+++ b/qa/scenarios/models/gpt54-thinking-visibility-switch.md
@@ -1,17 +1,17 @@
-# GPT-5.4 thinking visibility switch
+# GPT-5.5 thinking visibility switch
 
 ```yaml qa-scenario
 id: gpt54-thinking-visibility-switch
-title: GPT-5.4 thinking visibility switch
+title: GPT-5.5 thinking visibility switch
 surface: models
 coverage:
   primary:
     - models.thinking
   secondary:
     - runtime.reasoning-visibility
-objective: Verify GPT-5.4 can switch from disabled thinking to max thinking while reasoning display stays enabled.
+objective: Verify GPT-5.5 can switch from disabled thinking to max thinking while reasoning display stays enabled.
 successCriteria:
-  - Live runs target openai/gpt-5.4, not a mini or pro variant.
+  - Live runs target openai/gpt-5.5, not a mini or pro variant.
   - The session enables reasoning display before the comparison turns.
   - The disabled-thinking turn returns its visible marker without a Reasoning-prefixed message.
   - The max-thinking turn returns its visible marker and a separate Reasoning-prefixed message.
@@ -27,10 +27,10 @@ codeRefs:
   - extensions/qa-lab/src/providers/mock-openai/server.ts
 execution:
   kind: flow
-  summary: Toggle reasoning display and GPT-5.4 thinking between off/none and max/high, then verify visible reasoning only on the max turn.
+  summary: Toggle reasoning display and GPT-5.5 thinking between off/none and max/high, then verify visible reasoning only on the max turn.
   config:
     requiredLiveProvider: openai
-    requiredLiveModel: gpt-5.4
+    requiredLiveModel: gpt-5.5
     offDirective: /think off
     maxDirective: /think max
     reasoningDirective: /reasoning on
@@ -60,7 +60,7 @@ steps:
       - assert:
           expr: "env.providerMode !== 'live-frontier' || (selected?.provider === config.requiredLiveProvider && selected?.model === config.requiredLiveModel)"
           message:
-            expr: "`expected live GPT-5.4, got ${env.primaryModel}`"
+            expr: "`expected live GPT-5.5, got ${env.primaryModel}`"
       - call: state.addInboundMessage
         args:
           - conversation:
@@ -133,9 +133,9 @@ steps:
               value:
                 expr: "requests.find((request) => String(request.allInputText ?? '').includes(config.offPrompt))"
             - assert:
-                expr: "String(offRequest?.model ?? '').includes('gpt-5.4')"
+                expr: "String(offRequest?.model ?? '').includes('gpt-5.5')"
                 message:
-                  expr: "`expected GPT-5.4 off mock request, got ${String(offRequest?.model ?? '')}`"
+                  expr: "`expected GPT-5.5 off mock request, got ${String(offRequest?.model ?? '')}`"
     detailsExpr: "`off ack=${offAck.text}; off answer=${offAnswer.text}`"
   - name: switches to max thinking
     actions:
@@ -204,8 +204,8 @@ steps:
               value:
                 expr: "requests.find((request) => String(request.allInputText ?? '').includes(config.maxPrompt))"
             - assert:
-                expr: "String(maxRequest?.model ?? '').includes('gpt-5.4')"
+                expr: "String(maxRequest?.model ?? '').includes('gpt-5.5')"
                 message:
-                  expr: "`expected GPT-5.4 mock request, got ${String(maxRequest?.model ?? '')}`"
+                  expr: "`expected GPT-5.5 mock request, got ${String(maxRequest?.model ?? '')}`"
     detailsExpr: "`answer=${maxAnswer.text}`"
 ```
diff --git a/qa/scenarios/models/openai-native-web-search-live.md b/qa/scenarios/models/openai-native-web-search-live.md
index c1b2afe4854..9bd6faa1948 100644
--- a/qa/scenarios/models/openai-native-web-search-live.md
+++ b/qa/scenarios/models/openai-native-web-search-live.md
@@ -12,7 +12,7 @@ coverage:
 objective: Verify a live OpenAI GPT model can use OpenAI native web_search when OpenClaw web search is enabled in auto mode.
 successCriteria:
   - A live-frontier run fails fast unless the selected primary provider is openai.
-  - The selected primary model is GPT-5.4, not a mini or pro variant.
+  - The selected primary model is GPT-5.5, not a mini or pro variant.
   - Web search is enabled without pinning a managed web_search provider.
   - The live reply includes the required marker plus an official OpenAI News URL and headline found through web search.
 gatewayConfigPatch:
@@ -32,10 +32,10 @@ codeRefs:
   - extensions/qa-lab/src/suite.ts
 execution:
   kind: flow
-  summary: Run with `OPENCLAW_LIVE_OPENAI_KEY="${OPENAI_API_KEY}" pnpm openclaw qa suite --provider-mode live-frontier --model openai/gpt-5.4 --alt-model openai/gpt-5.4 --scenario openai-native-web-search-live`.
+  summary: Run with `OPENCLAW_LIVE_OPENAI_KEY="${OPENAI_API_KEY}" pnpm openclaw qa suite --provider-mode live-frontier --model openai/gpt-5.5 --alt-model openai/gpt-5.5 --scenario openai-native-web-search-live`.
   config:
     requiredProvider: openai
-    requiredModel: gpt-5.4
+    requiredModel: gpt-5.5
     expectedMarker: WEB-SEARCH-OK
     failureMarker: WEB-SEARCH-FAILED
     searchPrompt: |-
@@ -49,7 +49,7 @@ execution:
 
 ```yaml qa-flow
 steps:
-  - name: confirms live OpenAI GPT-5.4 web search auto mode
+  - name: confirms live OpenAI GPT-5.5 web search auto mode
     actions:
       - call: waitForGatewayHealthy
         args:
diff --git a/qa/scenarios/models/thinking-slash-model-remap.md b/qa/scenarios/models/thinking-slash-model-remap.md
index 1b47f2bc66e..e11798ab703 100644
--- a/qa/scenarios/models/thinking-slash-model-remap.md
+++ b/qa/scenarios/models/thinking-slash-model-remap.md
@@ -13,8 +13,8 @@ coverage:
 objective: Verify /think lists provider-owned levels and remaps stored thinking levels when /model changes provider capabilities.
 successCriteria:
   - Anthropic Claude Sonnet 4.6 advertises adaptive but not OpenAI-only xhigh or Opus max.
-  - A stored adaptive level remaps to medium when switching to OpenAI GPT-5.4.
-  - OpenAI GPT-5.4 advertises xhigh but not adaptive or max.
+  - A stored adaptive level remaps to medium when switching to OpenAI GPT-5.5.
+  - OpenAI GPT-5.5 advertises xhigh but not adaptive or max.
   - A stored xhigh level remaps to high when switching to an Anthropic model without xhigh support.
 docsRefs:
   - docs/tools/thinking.md
@@ -33,7 +33,7 @@ execution:
   config:
     requiredProviderMode: live-frontier
     anthropicModelRef: anthropic/claude-sonnet-4-6
-    openAiXhighModelRef: openai/gpt-5.4
+    openAiXhighModelRef: openai/gpt-5.5
     noXhighModelRef: anthropic/claude-sonnet-4-6
     conversationId: qa-thinking-slash-remap
 ```
@@ -165,7 +165,7 @@ steps:
       - assert:
           expr: "/Options: .*\\bxhigh\\b/i.test(openAiThinkStatus.text) && !/Options: .*\\badaptive\\b/i.test(openAiThinkStatus.text) && !/Options: .*\\bmax\\b/i.test(openAiThinkStatus.text)"
           message:
-            expr: "`expected OpenAI GPT-5.4 /think options to include xhigh only, got ${openAiThinkStatus.text}`"
+            expr: "`expected OpenAI GPT-5.5 /think options to include xhigh only, got ${openAiThinkStatus.text}`"
     detailsExpr: "`adaptive=${adaptiveAck.text}; switch=${openAiModelAck.text}; think=${openAiThinkStatus.text}`"
   - name: maps xhigh to high on a model without xhigh
     actions:
diff --git a/qa/scenarios/workspace/medium-game-plan-codex-harness.md b/qa/scenarios/workspace/medium-game-plan-codex-harness.md
index 2e9d0bcb642..956a9f78899 100644
--- a/qa/scenarios/workspace/medium-game-plan-codex-harness.md
+++ b/qa/scenarios/workspace/medium-game-plan-codex-harness.md
@@ -11,7 +11,7 @@ coverage:
     - models.codex-cli
 objective: Verify the Codex app-server harness can plan and build a medium-complex self-contained browser game.
 successCriteria:
-  - A live-frontier run fails fast unless the selected primary model is codex/gpt-5.4.
+  - A live-frontier run fails fast unless the selected primary model is codex/gpt-5.5.
   - The scenario forces the Codex embedded harness and disables PI fallback.
   - The prompt explicitly asks the agent to enter plan mode before editing.
   - The agent writes a self-contained HTML game with a canvas loop, controls, scoring, waves, pause, and restart.
@@ -25,10 +25,10 @@ codeRefs:
   - extensions/qa-lab/src/suite.ts
 execution:
   kind: flow
-  summary: Run with `pnpm openclaw qa suite --provider-mode live-frontier --model codex/gpt-5.4 --alt-model codex/gpt-5.4 --scenario medium-game-plan-codex-harness`.
+  summary: Run with `pnpm openclaw qa suite --provider-mode live-frontier --model codex/gpt-5.5 --alt-model codex/gpt-5.5 --scenario medium-game-plan-codex-harness`.
   config:
     requiredProvider: codex
-    requiredModel: gpt-5.4
+    requiredModel: gpt-5.5
     harnessRuntime: codex
     harnessFallback: none
     artifactFile: star-garden-defenders-codex.html
@@ -52,7 +52,7 @@ execution:
 
 ```yaml qa-flow
 steps:
-  - name: confirms GPT-5.4 Codex harness target
+  - name: confirms GPT-5.5 Codex harness target
     actions:
       - set: selected
         value:
diff --git a/qa/scenarios/workspace/medium-game-plan-pi-harness.md b/qa/scenarios/workspace/medium-game-plan-pi-harness.md
index 9c22709285d..32cbb724a23 100644
--- a/qa/scenarios/workspace/medium-game-plan-pi-harness.md
+++ b/qa/scenarios/workspace/medium-game-plan-pi-harness.md
@@ -9,9 +9,9 @@ coverage:
     - workspace.planning
   secondary:
     - agents.pi-harness
-objective: Verify GPT-5.4 can use the PI harness to plan and build a medium-complex self-contained browser game.
+objective: Verify GPT-5.5 can use the PI harness to plan and build a medium-complex self-contained browser game.
 successCriteria:
-  - A live-frontier run fails fast unless the selected primary model is openai/gpt-5.4.
+  - A live-frontier run fails fast unless the selected primary model is openai/gpt-5.5.
   - The scenario forces the embedded PI harness before the build turn.
   - The prompt explicitly asks the agent to enter plan mode before editing.
   - The agent writes a self-contained HTML game with a canvas loop, controls, scoring, waves, pause, and restart.
@@ -25,10 +25,10 @@ codeRefs:
   - extensions/qa-lab/src/suite.ts
 execution:
   kind: flow
-  summary: Run with `pnpm openclaw qa suite --provider-mode live-frontier --model openai/gpt-5.4 --alt-model openai/gpt-5.4 --scenario medium-game-plan-pi-harness`.
+  summary: Run with `pnpm openclaw qa suite --provider-mode live-frontier --model openai/gpt-5.5 --alt-model openai/gpt-5.5 --scenario medium-game-plan-pi-harness`.
   config:
     requiredProvider: openai
-    requiredModel: gpt-5.4
+    requiredModel: gpt-5.5
     harnessRuntime: pi
     harnessFallback: pi
     artifactFile: star-garden-defenders-pi.html
@@ -52,7 +52,7 @@ execution:
 
 ```yaml qa-flow
 steps:
-  - name: confirms GPT-5.4 PI harness target
+  - name: confirms GPT-5.5 PI harness target
     actions:
       - set: selected
         value:
diff --git a/src/agents/cli-backends.test.ts b/src/agents/cli-backends.test.ts
index 10252cc9f92..044541271d6 100644
--- a/src/agents/cli-backends.test.ts
+++ b/src/agents/cli-backends.test.ts
@@ -46,7 +46,7 @@ function createBackendEntry(params: {
           params.id === "claude-cli"
             ? "claude-cli/claude-sonnet-4-6"
             : params.id === "codex-cli"
-              ? "codex-cli/gpt-5.4"
+              ? "codex-cli/gpt-5.5"
               : params.id === "google-gemini-cli"
                 ? "google-gemini-cli/gemini-3-flash-preview"
                 : undefined,
@@ -385,7 +385,7 @@ describe("resolveCliBackendLiveTest", () => {
 
   it("returns plugin-owned live smoke metadata for codex", () => {
     expect(resolveCliBackendLiveTest("codex-cli")).toEqual({
-      defaultModelRef: "codex-cli/gpt-5.4",
+      defaultModelRef: "codex-cli/gpt-5.5",
       defaultImageProbe: true,
       defaultMcpProbe: true,
       dockerNpmPackage: "@openai/codex",
diff --git a/src/agents/model-auth.profiles.test.ts b/src/agents/model-auth.profiles.test.ts
index 9ff9ff88b50..4e13f5aa736 100644
--- a/src/agents/model-auth.profiles.test.ts
+++ b/src/agents/model-auth.profiles.test.ts
@@ -117,7 +117,7 @@ vi.mock("../plugins/provider-runtime.js", () => ({
     context: { listProfileIds: (providerId: string) => string[] };
   }) => {
     if (params.provider === "openai" && params.context.listProfileIds("openai-codex").length > 0) {
-      return 'No API key found for provider "openai". Use openai-codex/gpt-5.4.';
+      return 'No API key found for provider "openai". Use openai-codex/gpt-5.5.';
     }
     return undefined;
   },
@@ -365,7 +365,7 @@ describe("getApiKeyForModel", () => {
           } catch (err) {
             error = err;
           }
-          expect(String(error)).toContain("openai-codex/gpt-5.4");
+          expect(String(error)).toContain("openai-codex/gpt-5.5");
         },
       );
     } finally {
diff --git a/src/agents/model-compat.test.ts b/src/agents/model-compat.test.ts
index 69cd7aa004f..c51a7597d15 100644
--- a/src/agents/model-compat.test.ts
+++ b/src/agents/model-compat.test.ts
@@ -386,10 +386,14 @@ describe("isModernModelRef", () => {
   it("includes plugin-advertised modern models", () => {
     providerRuntimeMocks.resolveProviderModernModelRef.mockImplementation(({ provider, context }) =>
       provider === "openai" &&
-      ["gpt-5.4", "gpt-5.4-pro", "gpt-5.4-mini", "gpt-5.4-nano"].includes(context.modelId)
+      ["gpt-5.5", "gpt-5.5-pro", "gpt-5.4", "gpt-5.4-pro", "gpt-5.4-mini", "gpt-5.4-nano"].includes(
+        context.modelId,
+      )
         ? true
         : provider === "openai-codex" &&
-            ["gpt-5.4", "gpt-5.4-pro", "gpt-5.4-mini"].includes(context.modelId)
+            ["gpt-5.5", "gpt-5.5-pro", "gpt-5.4", "gpt-5.4-pro", "gpt-5.4-mini"].includes(
+              context.modelId,
+            )
           ? true
           : provider === "opencode" && ["claude-opus-4-6", "gemini-3-pro"].includes(context.modelId)
             ? true
@@ -398,10 +402,14 @@ describe("isModernModelRef", () => {
               : undefined,
     );
 
+    expect(isModernModelRef({ provider: "openai", id: "gpt-5.5" })).toBe(true);
+    expect(isModernModelRef({ provider: "openai", id: "gpt-5.5-pro" })).toBe(true);
     expect(isModernModelRef({ provider: "openai", id: "gpt-5.4" })).toBe(true);
     expect(isModernModelRef({ provider: "openai", id: "gpt-5.4-pro" })).toBe(true);
     expect(isModernModelRef({ provider: "openai", id: "gpt-5.4-mini" })).toBe(true);
     expect(isModernModelRef({ provider: "openai", id: "gpt-5.4-nano" })).toBe(true);
+    expect(isModernModelRef({ provider: "openai-codex", id: "gpt-5.5" })).toBe(true);
+    expect(isModernModelRef({ provider: "openai-codex", id: "gpt-5.5-pro" })).toBe(true);
     expect(isModernModelRef({ provider: "openai-codex", id: "gpt-5.4" })).toBe(true);
     expect(isModernModelRef({ provider: "openai-codex", id: "gpt-5.4-pro" })).toBe(true);
     expect(isModernModelRef({ provider: "openai-codex", id: "gpt-5.4-mini" })).toBe(true);
diff --git a/src/agents/models.profiles.live.test.ts b/src/agents/models.profiles.live.test.ts
index f4d84baa910..7af749ee3ab 100644
--- a/src/agents/models.profiles.live.test.ts
+++ b/src/agents/models.profiles.live.test.ts
@@ -680,7 +680,7 @@ describeLive("live models (profile keys)", () => {
             if (
               model.provider === "openai" &&
               model.api === "openai-responses" &&
-              model.id === "gpt-5.4"
+              (model.id === "gpt-5.5" || model.id === "gpt-5.4")
             ) {
               logProgress(`${progressLabel}: tool-only regression`);
               const noopTool = {
diff --git a/src/agents/pi-embedded-runner.cache.live.test.ts b/src/agents/pi-embedded-runner.cache.live.test.ts
index 9557b8d3438..cf3dd403f8b 100644
--- a/src/agents/pi-embedded-runner.cache.live.test.ts
+++ b/src/agents/pi-embedded-runner.cache.live.test.ts
@@ -805,7 +805,7 @@ describeCacheLive("pi embedded runner prompt caching (live)", () => {
         provider: "openai",
         api: "openai-responses",
         envVar: "OPENCLAW_LIVE_OPENAI_CACHE_MODEL",
-        preferredModelIds: ["gpt-5.4-mini", "gpt-5.4", "gpt-5.4"],
+        preferredModelIds: ["gpt-5.5", "gpt-5.4-mini", "gpt-5.4"],
       });
       logLiveCache(`openai model=${fixture.model.provider}/${fixture.model.id}`);
     }, 120_000);
diff --git a/src/agents/pi-mcp-style.cache.live.test.ts b/src/agents/pi-mcp-style.cache.live.test.ts
index 51ae45e71de..8fc6da32a87 100644
--- a/src/agents/pi-mcp-style.cache.live.test.ts
+++ b/src/agents/pi-mcp-style.cache.live.test.ts
@@ -162,7 +162,7 @@ describeCacheLive("MCP-style prompt caching (live)", () => {
         provider: "openai",
         api: "openai-responses",
         envVar: "OPENCLAW_LIVE_OPENAI_CACHE_MODEL",
-        preferredModelIds: ["gpt-5.4-mini", "gpt-5.4", "gpt-5.4"],
+        preferredModelIds: ["gpt-5.5", "gpt-5.4-mini", "gpt-5.4"],
       });
       logLiveCache(`openai mcp-style model=${fixture.model.provider}/${fixture.model.id}`);
 
diff --git a/src/agents/provider-headers.live.test.ts b/src/agents/provider-headers.live.test.ts
index ac44ef11f88..ea6e1f5a633 100644
--- a/src/agents/provider-headers.live.test.ts
+++ b/src/agents/provider-headers.live.test.ts
@@ -17,7 +17,7 @@ describeLive("provider response headers (live)", () => {
         provider: "openai",
         api: "openai-responses",
         envVar: "OPENCLAW_LIVE_OPENAI_CACHE_MODEL",
-        preferredModelIds: ["gpt-5.4-mini", "gpt-5.4", "gpt-5.4"],
+        preferredModelIds: ["gpt-5.5", "gpt-5.4-mini", "gpt-5.4"],
       });
     }, 120_000);
 
diff --git a/src/agents/simple-completion-runtime.selection.test.ts b/src/agents/simple-completion-runtime.selection.test.ts
index e8fc873353d..d511091c8a9 100644
--- a/src/agents/simple-completion-runtime.selection.test.ts
+++ b/src/agents/simple-completion-runtime.selection.test.ts
@@ -82,7 +82,7 @@ describe("resolveSimpleCompletionSelectionForAgent", () => {
     expect(selection).toEqual(
       expect.objectContaining({
         provider: "openai",
-        modelId: "gpt-5.4",
+        modelId: "gpt-5.5",
       }),
     );
   });
@@ -118,7 +118,7 @@ describe("resolveSimpleCompletionSelectionForAgent", () => {
     expect(selection).toEqual(
       expect.objectContaining({
         provider: "openai",
-        modelId: "gpt-5.4",
+        modelId: "gpt-5.5",
       }),
     );
   });
diff --git a/src/auto-reply/reply/agent-runner-execution.test.ts b/src/auto-reply/reply/agent-runner-execution.test.ts
index be7a4ebc31a..0ce5b4ed08b 100644
--- a/src/auto-reply/reply/agent-runner-execution.test.ts
+++ b/src/auto-reply/reply/agent-runner-execution.test.ts
@@ -1517,7 +1517,7 @@ describe("runAgentTurnWithFallback", () => {
   it("surfaces direct provider auth guidance for missing API keys", async () => {
     state.runEmbeddedPiAgentMock.mockRejectedValueOnce(
       new Error(
-        'No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.4 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.4. | No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.4 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.4.',
+        'No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.5 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.5. | No API key found for provider "openai". You are authenticated with OpenAI Codex OAuth. Use openai-codex/gpt-5.5 (OAuth) or set OPENAI_API_KEY to use openai/gpt-5.5.',
       ),
     );
 
@@ -1549,7 +1549,7 @@ describe("runAgentTurnWithFallback", () => {
     expect(result.kind).toBe("final");
     if (result.kind === "final") {
       expect(result.payload.text).toBe(
-        "⚠️ Missing API key for OpenAI on the gateway. Use `openai-codex/gpt-5.4` for OAuth, or set `OPENAI_API_KEY`, then try again.",
+        "⚠️ Missing API key for OpenAI on the gateway. Use `openai-codex/gpt-5.5` for OAuth, or set `OPENAI_API_KEY`, then try again.",
       );
     }
   });
diff --git a/src/auto-reply/reply/agent-runner-memory.test.ts b/src/auto-reply/reply/agent-runner-memory.test.ts
index 55c7e6f67e2..d8ca2221298 100644
--- a/src/auto-reply/reply/agent-runner-memory.test.ts
+++ b/src/auto-reply/reply/agent-runner-memory.test.ts
@@ -181,7 +181,7 @@ describe("runMemoryFlushIfNeeded", () => {
       cfg: { agents: { defaults: { cliBackends: { "codex-cli": { command: "codex" } } } } },
       followupRun: createTestFollowupRun({ provider: "codex-cli" }),
       sessionCtx: { Provider: "whatsapp" } as unknown as TemplateContext,
-      defaultModel: "codex-cli/gpt-5.4",
+      defaultModel: "codex-cli/gpt-5.5",
       agentCfgContextTokens: 100_000,
       resolvedVerboseLevel: "off",
       sessionEntry,
diff --git a/src/commands/agent-command.test-mocks.ts b/src/commands/agent-command.test-mocks.ts
index 045b5650db4..528aaadba6d 100644
--- a/src/commands/agent-command.test-mocks.ts
+++ b/src/commands/agent-command.test-mocks.ts
@@ -83,8 +83,8 @@ vi.mock("../agents/model-selection.js", () => {
     return primary?.primary;
   };
   const resolveDefaultRef = (cfg?: ConfigWithModels): ModelRef => {
-    const parsed = parseModelRefImpl(resolvePrimary(cfg) ?? "openai/gpt-5.4", "openai");
-    return parsed ?? { provider: "openai", model: "gpt-5.4" };
+    const parsed = parseModelRefImpl(resolvePrimary(cfg) ?? "openai/gpt-5.5", "openai");
+    return parsed ?? { provider: "openai", model: "gpt-5.5" };
   };
   const resolveModelConfig = (cfg: ConfigWithModels | undefined, ref: ModelRef) => {
     const models = cfg?.agents?.defaults?.models ?? {};
diff --git a/src/commands/agent.acp.test.ts b/src/commands/agent.acp.test.ts
index ac116d66652..7ae55c32328 100644
--- a/src/commands/agent.acp.test.ts
+++ b/src/commands/agent.acp.test.ts
@@ -130,8 +130,8 @@ function createAcpEnabledConfig(home: string, storePath: string): OpenClawConfig
     },
     agents: {
       defaults: {
-        model: { primary: "openai/gpt-5.4" },
-        models: { "openai/gpt-5.4": {} },
+        model: { primary: "openai/gpt-5.5" },
+        models: { "openai/gpt-5.5": {} },
         workspace: path.join(home, "openclaw"),
       },
     },
diff --git a/src/commands/auth-choice.test.ts b/src/commands/auth-choice.test.ts
index 1cfe2e2fb30..bc59fbfab52 100644
--- a/src/commands/auth-choice.test.ts
+++ b/src/commands/auth-choice.test.ts
@@ -492,7 +492,7 @@ async function createDefaultProviderPlugins(): Promise<ProviderPlugin[]> {
       flagName: "--openai-api-key",
       envVar: "OPENAI_API_KEY",
       promptMessage: "Enter OpenAI API key",
-      defaultModel: "openai/gpt-5.4",
+      defaultModel: "openai/gpt-5.5",
     }),
     await createApiKeyProvider({
       providerId: "opencode",
diff --git a/src/commands/configure.gateway-auth.prompt-auth-config.test.ts b/src/commands/configure.gateway-auth.prompt-auth-config.test.ts
index b23282d48ad..54c49ab45d2 100644
--- a/src/commands/configure.gateway-auth.prompt-auth-config.test.ts
+++ b/src/commands/configure.gateway-auth.prompt-auth-config.test.ts
@@ -168,7 +168,7 @@ describe("promptAuthConfig", () => {
         agents: {
           defaults: {
             models: {
-              "openai/gpt-5.4": { alias: "GPT" },
+              "openai/gpt-5.5": { alias: "GPT" },
               "anthropic/claude-opus-4-6": { alias: "Opus" },
             },
           },
@@ -193,7 +193,7 @@ describe("promptAuthConfig", () => {
     const result = await promptAuthConfig({}, makeRuntime(), noopPrompter);
 
     expect(result.agents?.defaults?.models).toEqual({
-      "openai/gpt-5.4": { alias: "GPT" },
+      "openai/gpt-5.5": { alias: "GPT" },
       "anthropic/claude-sonnet-4-6": {},
     });
   });
diff --git a/src/commands/doctor-cron-store-migration.test.ts b/src/commands/doctor-cron-store-migration.test.ts
index 1449b89c129..5a85ae51ec2 100644
--- a/src/commands/doctor-cron-store-migration.test.ts
+++ b/src/commands/doctor-cron-store-migration.test.ts
@@ -36,7 +36,7 @@ describe("normalizeStoredCronJobs", () => {
         jobId: "legacy-job",
         schedule: { kind: "cron", cron: "*/5 * * * *", tz: "UTC" },
         message: "say hi",
-        model: "openai/gpt-5.4",
+        model: "openai/gpt-5.5",
         deliver: true,
         provider: " TeLeGrAm ",
         to: "12345",
@@ -73,7 +73,7 @@ describe("normalizeStoredCronJobs", () => {
     expect(job?.payload).toMatchObject({
       kind: "agentTurn",
       message: "say hi",
-      model: "openai/gpt-5.4",
+      model: "openai/gpt-5.5",
     });
   });
 
diff --git a/src/commands/model-picker.test.ts b/src/commands/model-picker.test.ts
index f3ada2a9f44..9ac565452cf 100644
--- a/src/commands/model-picker.test.ts
+++ b/src/commands/model-picker.test.ts
@@ -116,13 +116,13 @@ describe("promptDefaultModel", () => {
     loadModelCatalog.mockResolvedValue([
       {
         provider: "openai",
-        id: "gpt-5.4",
-        name: "GPT-5.4",
+        id: "gpt-5.5",
+        name: "GPT-5.5",
       },
       {
         provider: "openai-codex",
-        id: "gpt-5.4",
-        name: "GPT-5.4",
+        id: "gpt-5.5",
+        name: "GPT-5.5",
       },
     ]);
 
@@ -141,11 +141,11 @@ describe("promptDefaultModel", () => {
     expect(options).toEqual(
       expect.arrayContaining([
         expect.objectContaining({
-          value: "openai/gpt-5.4",
+          value: "openai/gpt-5.5",
           hint: expect.stringContaining("API key route"),
         }),
         expect.objectContaining({
-          value: "openai-codex/gpt-5.4",
+          value: "openai-codex/gpt-5.5",
           hint: expect.stringContaining("ChatGPT OAuth route"),
         }),
       ]),
@@ -156,8 +156,8 @@ describe("promptDefaultModel", () => {
     loadModelCatalog.mockResolvedValue([
       {
         provider: "openai",
-        id: "gpt-5.4",
-        name: "GPT-5.4",
+        id: "gpt-5.5",
+        name: "GPT-5.5",
       },
       {
         provider: "byteplus-plan",
@@ -171,7 +171,7 @@ describe("promptDefaultModel", () => {
     const config = {
       agents: {
         defaults: {
-          model: "openai/gpt-5.4",
+          model: "openai/gpt-5.5",
         },
       },
     } as OpenClawConfig;
@@ -276,8 +276,8 @@ describe("promptDefaultModel", () => {
     loadModelCatalog.mockResolvedValue([
       {
         provider: "openai",
-        id: "gpt-5.4",
-        name: "GPT-5.4",
+        id: "gpt-5.5",
+        name: "GPT-5.5",
       },
     ]);
     providerModelPickerContributionRuntime.enabled = true;
@@ -343,8 +343,8 @@ describe("promptModelAllowlist", () => {
       },
       {
         provider: "openai",
-        id: "gpt-5.4",
-        name: "GPT-5.2",
+        id: "gpt-5.5",
+        name: "GPT-5.5",
       },
     ]);
 
@@ -374,8 +374,8 @@ describe("promptModelAllowlist", () => {
       },
       {
         provider: "openai",
-        id: "gpt-5.4",
-        name: "GPT-5.4",
+        id: "gpt-5.5",
+        name: "GPT-5.5",
       },
       {
         provider: "openai",
@@ -396,7 +396,7 @@ describe("promptModelAllowlist", () => {
 
     const options = multiselect.mock.calls[0]?.[0]?.options ?? [];
     expect(options.map((opt: { value: string }) => opt.value)).toEqual([
-      "openai/gpt-5.4",
+      "openai/gpt-5.5",
       "openai/gpt-5.4-mini",
     ]);
   });
@@ -440,16 +440,16 @@ describe("applyModelAllowlist", () => {
       agents: {
         defaults: {
           models: {
-            "openai/gpt-5.4": { alias: "gpt" },
+            "openai/gpt-5.5": { alias: "gpt" },
             "anthropic/claude-opus-4-6": { alias: "opus" },
           },
         },
       },
     } as OpenClawConfig;
 
-    const next = applyModelAllowlist(config, ["openai/gpt-5.4"]);
+    const next = applyModelAllowlist(config, ["openai/gpt-5.5"]);
     expect(next.agents?.defaults?.models).toEqual({
-      "openai/gpt-5.4": { alias: "gpt" },
+      "openai/gpt-5.5": { alias: "gpt" },
     });
   });
 
@@ -458,7 +458,7 @@ describe("applyModelAllowlist", () => {
       agents: {
         defaults: {
           models: {
-            "openai/gpt-5.4": { alias: "gpt" },
+            "openai/gpt-5.5": { alias: "gpt" },
             "anthropic/claude-opus-4-6": { alias: "opus" },
             "anthropic/claude-sonnet-4-6": { alias: "sonnet" },
           },
@@ -470,7 +470,7 @@ describe("applyModelAllowlist", () => {
       scopeKeys: ["anthropic/claude-opus-4-6", "anthropic/claude-sonnet-4-6"],
     });
     expect(next.agents?.defaults?.models).toEqual({
-      "openai/gpt-5.4": { alias: "gpt" },
+      "openai/gpt-5.5": { alias: "gpt" },
       "anthropic/claude-sonnet-4-6": { alias: "sonnet" },
     });
   });
@@ -480,7 +480,7 @@ describe("applyModelAllowlist", () => {
       agents: {
         defaults: {
           models: {
-            "openai/gpt-5.4": { alias: "gpt" },
+            "openai/gpt-5.5": { alias: "gpt" },
           },
         },
       },
@@ -515,15 +515,15 @@ describe("applyModelFallbacksFromSelection", () => {
     const config = {
       agents: {
         defaults: {
-          model: { primary: "anthropic/claude-opus-4-6", fallbacks: ["openai/gpt-5.4"] },
+          model: { primary: "anthropic/claude-opus-4-6", fallbacks: ["openai/gpt-5.5"] },
         },
       },
     } as OpenClawConfig;
 
-    const next = applyModelFallbacksFromSelection(config, ["openai/gpt-5.4"]);
+    const next = applyModelFallbacksFromSelection(config, ["openai/gpt-5.5"]);
     expect(next.agents?.defaults?.model).toEqual({
       primary: "anthropic/claude-opus-4-6",
-      fallbacks: ["openai/gpt-5.4"],
+      fallbacks: ["openai/gpt-5.5"],
     });
   });
 });
diff --git a/src/commands/models/auth.test.ts b/src/commands/models/auth.test.ts
index 8ebcd4939ec..daaf6874f2e 100644
--- a/src/commands/models/auth.test.ts
+++ b/src/commands/models/auth.test.ts
@@ -298,7 +298,7 @@ describe("modelsAuthLoginCommand", () => {
           },
         },
       ],
-      defaultModel: "openai-codex/gpt-5.4",
+      defaultModel: "openai-codex/gpt-5.5",
     });
     mocks.resolvePluginProviders.mockReturnValue([
       createProvider({
@@ -365,7 +365,7 @@ describe("modelsAuthLoginCommand", () => {
       "Auth profile: openai-codex:user@example.com (openai-codex/oauth)",
     );
     expect(runtime.log).toHaveBeenCalledWith(
-      "Default model available: openai-codex/gpt-5.4 (use --set-default to apply)",
+      "Default model available: openai-codex/gpt-5.5 (use --set-default to apply)",
     );
     expect(runtime.log).toHaveBeenCalledWith(
       "Tip: Codex-capable models can use native Codex web search. Enable it with openclaw configure --section web (recommended mode: cached). Docs: https://docs.openclaw.ai/tools/web",
@@ -585,7 +585,7 @@ describe("modelsAuthLoginCommand", () => {
       "anthropic/claude-sonnet-4-6": { alias: "sonnet" },
       "anthropic/claude-opus-4-6": { alias: "opus" },
       "moonshot/kimi-k2.5": { alias: "kimi" },
-      "openai-codex/gpt-5.4": { alias: "gpt54" },
+      "openai-codex/gpt-5.5": { alias: "gpt55" },
     };
     currentConfig = { agents: { defaults: { models: existingModels } } };
     runProviderAuth.mockResolvedValue({
@@ -602,8 +602,8 @@ describe("modelsAuthLoginCommand", () => {
           },
         },
       ],
-      configPatch: { agents: { defaults: { models: { "openai-codex/gpt-5.4": {} } } } },
-      defaultModel: "openai-codex/gpt-5.4",
+      configPatch: { agents: { defaults: { models: { "openai-codex/gpt-5.5": {} } } } },
+      defaultModel: "openai-codex/gpt-5.5",
     });
 
     await modelsAuthLoginCommand({ provider: "openai-codex" }, runtime);
diff --git a/src/commands/models/list.configured.test.ts b/src/commands/models/list.configured.test.ts
index 04fb661c040..45cb21c9461 100644
--- a/src/commands/models/list.configured.test.ts
+++ b/src/commands/models/list.configured.test.ts
@@ -13,9 +13,9 @@ describe("resolveConfiguredEntries", () => {
     const { entries } = resolveConfiguredEntries({
       agents: {
         defaults: {
-          model: { primary: "codex/gpt-5.4", fallbacks: ["codex/gpt-5.4-mini"] },
+          model: { primary: "codex/gpt-5.5", fallbacks: ["codex/gpt-5.4-mini"] },
           models: {
-            "codex/gpt-5.4": { alias: "Codex" },
+            "codex/gpt-5.5": { alias: "Codex" },
             "codex/gpt-5.4-mini": {},
           },
         },
@@ -23,7 +23,7 @@ describe("resolveConfiguredEntries", () => {
       models: { providers: {} },
     });
 
-    expect(entries.map((entry) => entry.key)).toEqual(["codex/gpt-5.4", "codex/gpt-5.4-mini"]);
+    expect(entries.map((entry) => entry.key)).toEqual(["codex/gpt-5.5", "codex/gpt-5.4-mini"]);
     expect(entries[0]?.tags).toEqual(new Set(["default", "configured"]));
     expect(entries[0]?.aliases).toEqual(["Codex"]);
     expect(entries[1]?.tags).toEqual(new Set(["fallback#1", "configured"]));
diff --git a/src/commands/models/list.rows.test.ts b/src/commands/models/list.rows.test.ts
index df8af8b264a..e2f77819e47 100644
--- a/src/commands/models/list.rows.test.ts
+++ b/src/commands/models/list.rows.test.ts
@@ -8,8 +8,8 @@ const mocks = vi.hoisted(() => ({
   }),
   loadProviderCatalogModelsForList: vi.fn().mockResolvedValue([
     {
-      id: "gpt-5.4",
-      name: "gpt-5.4",
+      id: "gpt-5.5",
+      name: "gpt-5.5",
       provider: "codex",
       api: "openai-codex-responses",
       baseUrl: "https://chatgpt.com/backend-api",
@@ -57,7 +57,7 @@ describe("appendProviderCatalogRows", () => {
       seenKeys: new Set(),
       context: {
         cfg: {
-          agents: { defaults: { model: { primary: "codex/gpt-5.4" } } },
+          agents: { defaults: { model: { primary: "codex/gpt-5.5" } } },
           models: { providers: {} },
         },
         agentDir: "/tmp/openclaw-agent",
@@ -72,7 +72,7 @@ describe("appendProviderCatalogRows", () => {
     expect(mocks.shouldSuppressBuiltInModel).not.toHaveBeenCalled();
     expect(rows).toMatchObject([
       {
-        key: "codex/gpt-5.4",
+        key: "codex/gpt-5.5",
         available: true,
         missing: false,
       },
diff --git a/src/commands/models/list.status.test.ts b/src/commands/models/list.status.test.ts
index 357d5d991ba..16ba9c450a2 100644
--- a/src/commands/models/list.status.test.ts
+++ b/src/commands/models/list.status.test.ts
@@ -429,8 +429,8 @@ describe("modelsStatusCommand auth overview", () => {
     mocks.loadConfig.mockReturnValue({
       agents: {
         defaults: {
-          model: { primary: "codex/gpt-5.4", fallbacks: [] },
-          models: { "codex/gpt-5.4": {} },
+          model: { primary: "codex/gpt-5.5", fallbacks: [] },
+          models: { "codex/gpt-5.5": {} },
         },
       },
       models: { providers: {} },
diff --git a/src/commands/onboard-auth.config-shared.test.ts b/src/commands/onboard-auth.config-shared.test.ts
index 2f0c549aac9..dba920f1e41 100644
--- a/src/commands/onboard-auth.config-shared.test.ts
+++ b/src/commands/onboard-auth.config-shared.test.ts
@@ -64,7 +64,7 @@ describe("onboard auth provider config merges", () => {
       agents: {
         defaults: {
           models: {
-            "openai/gpt-5.4": { alias: "GPT" },
+            "openai/gpt-5.5": { alias: "GPT" },
           },
         },
       },
@@ -89,7 +89,7 @@ describe("onboard auth provider config merges", () => {
     });
 
     expect(next.agents?.defaults?.models).toEqual({
-      "openai/gpt-5.4": { alias: "GPT" },
+      "openai/gpt-5.5": { alias: "GPT" },
       ...agentModels,
     });
   });
diff --git a/src/commands/openai-model-default.test.ts b/src/commands/openai-model-default.test.ts
index 173fc94fb69..fc3e7ada9c7 100644
--- a/src/commands/openai-model-default.test.ts
+++ b/src/commands/openai-model-default.test.ts
@@ -73,7 +73,7 @@ describe("applyDefaultModelChoice", () => {
   });
 
   it("uses applyDefaultConfig path when setDefaultModel is true", async () => {
-    const defaultModel = "openai/gpt-5.4";
+    const defaultModel = "openai/gpt-5.5";
     const applied = await applyDefaultModelChoice({
       config: {},
       setDefaultModel: true,
diff --git a/src/commands/status-overview-rows.test.ts b/src/commands/status-overview-rows.test.ts
index 451e72d8543..44719ffddf5 100644
--- a/src/commands/status-overview-rows.test.ts
+++ b/src/commands/status-overview-rows.test.ts
@@ -19,7 +19,7 @@ describe("status-overview-rows", () => {
             "1 files · 2 chunks · plugin memory · ok(vector ready) · warn(fts ready) · muted(cache warm)",
         },
         { Item: "Plugin compatibility", Value: "warn(1 notice · 1 plugin)" },
-        { Item: "Sessions", Value: "2 active · default gpt-5.4 (12k ctx) · store.json" },
+        { Item: "Sessions", Value: "2 active · default gpt-5.5 (12k ctx) · store.json" },
       ]),
     );
   });
diff --git a/src/commands/status-overview-values.test.ts b/src/commands/status-overview-values.test.ts
index e809d13c562..5bcd4b7880d 100644
--- a/src/commands/status-overview-values.test.ts
+++ b/src/commands/status-overview-values.test.ts
@@ -54,10 +54,10 @@ describe("status-overview-values", () => {
         sessions: {
           count: 2,
           paths: ["store.json", "other.json"],
-          defaults: { model: "gpt-5.4", contextTokens: 12_000 },
+          defaults: { model: "gpt-5.5", contextTokens: 12_000 },
         },
         formatKTokens: (value) => `${Math.round(value / 1000)}k`,
       }),
-    ).toBe("2 active · default gpt-5.4 (12k ctx) · 2 stores");
+    ).toBe("2 active · default gpt-5.5 (12k ctx) · 2 stores");
   });
 });
diff --git a/src/commands/status.summary.runtime.test.ts b/src/commands/status.summary.runtime.test.ts
index 2c3b5319cbc..6d5d46e2e9f 100644
--- a/src/commands/status.summary.runtime.test.ts
+++ b/src/commands/status.summary.runtime.test.ts
@@ -79,17 +79,17 @@ describe("statusSummaryRuntime.resolveSessionModelRef", () => {
         {
           agents: {
             defaults: {
-              model: { primary: "openai/gpt-5.4" },
+              model: { primary: "openai/gpt-5.5" },
             },
           },
         } as never,
         {
-          model: "gpt-5.4",
+          model: "gpt-5.5",
         },
       ),
     ).toEqual({
       provider: "openai",
-      model: "gpt-5.4",
+      model: "gpt-5.5",
     });
   });
 
diff --git a/src/commands/status.summary.test.ts b/src/commands/status.summary.test.ts
index 4eab0d1b3e9..c7b48a1b5b3 100644
--- a/src/commands/status.summary.test.ts
+++ b/src/commands/status.summary.test.ts
@@ -14,11 +14,11 @@ vi.mock("./status.summary.runtime.js", () => ({
     classifySessionKey: vi.fn(() => "direct"),
     resolveConfiguredStatusModelRef: vi.fn(() => ({
       provider: "openai",
-      model: "gpt-5.4",
+      model: "gpt-5.5",
     })),
     resolveSessionModelRef: vi.fn(() => ({
       provider: "openai",
-      model: "gpt-5.4",
+      model: "gpt-5.5",
     })),
     resolveContextTokensForModel: vi.fn(() => 200_000),
   },
@@ -26,7 +26,7 @@ vi.mock("./status.summary.runtime.js", () => ({
 
 vi.mock("../agents/defaults.js", () => ({
   DEFAULT_CONTEXT_TOKENS: 200_000,
-  DEFAULT_MODEL: "gpt-5.4",
+  DEFAULT_MODEL: "gpt-5.5",
   DEFAULT_PROVIDER: "openai",
 }));
 
diff --git a/src/commands/status.test-support.ts b/src/commands/status.test-support.ts
index 4e72f261fde..0e47a4ce7b5 100644
--- a/src/commands/status.test-support.ts
+++ b/src/commands/status.test-support.ts
@@ -92,14 +92,14 @@ export const baseStatusSummary = {
   sessions: {
     count: 2,
     paths: ["store.json"],
-    defaults: { model: "gpt-5.4", contextTokens: 12_000 },
+    defaults: { model: "gpt-5.5", contextTokens: 12_000 },
     recent: [
       {
         key: "session-key",
         kind: "direct",
         updatedAt: 1,
         age: 5_000,
-        model: "gpt-5.4",
+        model: "gpt-5.5",
         totalTokens: 12_000,
         totalTokensFresh: true,
         remainingTokens: 4_000,
diff --git a/src/gateway/gateway-acp-bind.live.test.ts b/src/gateway/gateway-acp-bind.live.test.ts
index 04ca819eee6..0d8349b3a28 100644
--- a/src/gateway/gateway-acp-bind.live.test.ts
+++ b/src/gateway/gateway-acp-bind.live.test.ts
@@ -36,7 +36,7 @@ const describeLive = LIVE && ACP_BIND_LIVE ? describe : describe.skip;
 
 const CONNECT_TIMEOUT_MS = 90_000;
 const LIVE_TIMEOUT_MS = 240_000;
-const DEFAULT_LIVE_CODEX_MODEL = "gpt-5.4";
+const DEFAULT_LIVE_CODEX_MODEL = "gpt-5.5";
 type LiveAcpAgent = "claude" | "codex" | "gemini";
 
 function createSlackCurrentConversationBindingRegistry() {
diff --git a/src/gateway/gateway-cli-backend.live-helpers.test.ts b/src/gateway/gateway-cli-backend.live-helpers.test.ts
index 105e7fae8ed..fa246caa573 100644
--- a/src/gateway/gateway-cli-backend.live-helpers.test.ts
+++ b/src/gateway/gateway-cli-backend.live-helpers.test.ts
@@ -112,7 +112,7 @@ describe("gateway cli backend live helpers", () => {
     );
     expect(shouldRunCliModelSwitchProbe("claude-cli", "claude-cli/claude-sonnet-4-6")).toBe(true);
     expect(shouldRunCliModelSwitchProbe("claude-cli", "claude-cli/claude-opus-4-6")).toBe(false);
-    expect(shouldRunCliModelSwitchProbe("codex-cli", "codex-cli/gpt-5.4")).toBe(false);
+    expect(shouldRunCliModelSwitchProbe("codex-cli", "codex-cli/gpt-5.5")).toBe(false);
   });
 
   it("lets env disable the model switch probe", async () => {
diff --git a/src/gateway/gateway-models.profiles.live.test.ts b/src/gateway/gateway-models.profiles.live.test.ts
index a3afb1f967d..108528c469a 100644
--- a/src/gateway/gateway-models.profiles.live.test.ts
+++ b/src/gateway/gateway-models.profiles.live.test.ts
@@ -515,7 +515,7 @@ describe("resolveGatewayLiveMaxModels", () => {
   });
 
   it("keeps explicit gateway model lists uncapped unless a cap is provided", () => {
-    process.env.OPENCLAW_LIVE_GATEWAY_MODELS = "openai/gpt-5.4,anthropic/claude-opus-4-6";
+    process.env.OPENCLAW_LIVE_GATEWAY_MODELS = "openai/gpt-5.5,anthropic/claude-opus-4-6";
     delete process.env.OPENCLAW_LIVE_GATEWAY_MAX_MODELS;
     delete process.env.OPENCLAW_LIVE_MAX_MODELS;
 
diff --git a/src/gateway/server-methods/chat.directive-tags.test.ts b/src/gateway/server-methods/chat.directive-tags.test.ts
index c80af46a318..8e515fa45a6 100644
--- a/src/gateway/server-methods/chat.directive-tags.test.ts
+++ b/src/gateway/server-methods/chat.directive-tags.test.ts
@@ -344,8 +344,8 @@ function createChatContext(): Pick<
       mockState.modelCatalog ?? [
         {
           provider: "openai",
-          id: "gpt-5.4",
-          name: "GPT-5.4",
+          id: "gpt-5.5",
+          name: "GPT-5.5",
           input: ["text", "image"],
         },
         {
diff --git a/src/gateway/server-startup.test.ts b/src/gateway/server-startup.test.ts
index b5739d34b55..29f4e8c3783 100644
--- a/src/gateway/server-startup.test.ts
+++ b/src/gateway/server-startup.test.ts
@@ -122,7 +122,7 @@ describe("gateway startup primary model warmup", () => {
         agents: {
           defaults: {
             model: {
-              primary: "codex-cli/gpt-5.4",
+              primary: "codex-cli/gpt-5.5",
             },
             cliBackends: {
               "codex-cli": {
diff --git a/src/media-understanding/defaults.test.ts b/src/media-understanding/defaults.test.ts
index 1effd6da0bc..6854e99a7b4 100644
--- a/src/media-understanding/defaults.test.ts
+++ b/src/media-understanding/defaults.test.ts
@@ -17,7 +17,7 @@ describe("resolveDefaultMediaModel", () => {
       "MiniMax-VL-01",
     );
     expect(resolveDefaultMediaModel({ providerId: "openai-codex", capability: "image" })).toBe(
-      "gpt-5.4",
+      "gpt-5.5",
     );
     expect(resolveDefaultMediaModel({ providerId: "moonshot", capability: "image" })).toBe(
       "kimi-k2.6",
diff --git a/src/plugins/config-state.test.ts b/src/plugins/config-state.test.ts
index 246a21bd29b..f153eac0914 100644
--- a/src/plugins/config-state.test.ts
+++ b/src/plugins/config-state.test.ts
@@ -94,12 +94,12 @@ describe("normalizePluginsConfig", () => {
       name: "normalizes plugin subagent override policy settings",
       subagent: {
         allowModelOverride: true,
-        allowedModels: [" anthropic/claude-sonnet-4-6 ", "", "openai/gpt-5.4"],
+        allowedModels: [" anthropic/claude-sonnet-4-6 ", "", "openai/gpt-5.5"],
       },
       expected: {
         allowModelOverride: true,
         hasAllowedModelsConfig: true,
-        allowedModels: ["anthropic/claude-sonnet-4-6", "openai/gpt-5.4"],
+        allowedModels: ["anthropic/claude-sonnet-4-6", "openai/gpt-5.5"],
       },
     },
     {
diff --git a/src/plugins/provider-auth-choice-helpers.test.ts b/src/plugins/provider-auth-choice-helpers.test.ts
index 8393a79bffb..931e5356126 100644
--- a/src/plugins/provider-auth-choice-helpers.test.ts
+++ b/src/plugins/provider-auth-choice-helpers.test.ts
@@ -17,11 +17,11 @@ describe("applyProviderAuthConfigPatch", () => {
   };
 
   it("merges default model maps by default so other providers survive login", () => {
-    const patch = { agents: { defaults: { models: { "openai-codex/gpt-5.4": {} } } } };
+    const patch = { agents: { defaults: { models: { "openai-codex/gpt-5.5": {} } } } };
     const next = applyProviderAuthConfigPatch(base, patch);
     expect(next.agents?.defaults?.models).toEqual({
       ...base.agents.defaults.models,
-      "openai-codex/gpt-5.4": {},
+      "openai-codex/gpt-5.5": {},
     });
     expect(next.agents?.defaults?.model).toEqual(base.agents.defaults.model);
   });
diff --git a/src/plugins/provider-runtime.test-support.ts b/src/plugins/provider-runtime.test-support.ts
index 9d55be7e8c6..74feb8f6d3b 100644
--- a/src/plugins/provider-runtime.test-support.ts
+++ b/src/plugins/provider-runtime.test-support.ts
@@ -23,6 +23,15 @@ export const expectedAugmentedOpenaiCodexCatalogEntries = [
   },
 ];
 
+export const expectedAugmentedOpenaiCodexCatalogEntriesWithGpt55 = [
+  { provider: "openai", id: "gpt-5.5", name: "gpt-5.5" },
+  { provider: "openai", id: "gpt-5.5-pro", name: "gpt-5.5-pro" },
+  ...expectedAugmentedOpenaiCodexCatalogEntries.slice(0, 4),
+  { provider: "openai-codex", id: "gpt-5.5", name: "gpt-5.5" },
+  { provider: "openai-codex", id: "gpt-5.5-pro", name: "gpt-5.5-pro" },
+  ...expectedAugmentedOpenaiCodexCatalogEntries.slice(4),
+];
+
 export function expectCodexMissingAuthHint(
   buildProviderMissingAuthMessageWithPlugin: (params: {
     provider: string;
@@ -44,7 +53,7 @@ export function expectCodexMissingAuthHint(
         listProfileIds: (providerId) => (providerId === "openai-codex" ? ["p1"] : []),
       },
     }),
-  ).toContain("openai-codex/gpt-5.4");
+  ).toContain("openai-codex/gpt-5.5");
 }
 
 export function expectCodexBuiltInSuppression(
@@ -80,6 +89,7 @@ export async function expectAugmentedCodexCatalog(
       entries: typeof openaiCodexCatalogEntries;
     };
   }) => Promise<unknown>,
+  expectedEntries = expectedAugmentedOpenaiCodexCatalogEntries,
 ) {
   const result = (await augmentModelCatalogWithProviderPlugins({
     env: process.env,
@@ -88,8 +98,8 @@ export async function expectAugmentedCodexCatalog(
       entries: openaiCodexCatalogEntries,
     },
   })) as Array<Record<string, unknown>>;
-  expect(result).toHaveLength(expectedAugmentedOpenaiCodexCatalogEntries.length);
-  for (const entry of expectedAugmentedOpenaiCodexCatalogEntries) {
+  expect(result).toHaveLength(expectedEntries.length);
+  for (const entry of expectedEntries) {
     expect(result).toContainEqual(expect.objectContaining(entry));
   }
 }
diff --git a/src/plugins/provider-runtime.test.ts b/src/plugins/provider-runtime.test.ts
index 25a2e7e89eb..748a1b8bc5a 100644
--- a/src/plugins/provider-runtime.test.ts
+++ b/src/plugins/provider-runtime.test.ts
@@ -943,7 +943,7 @@ describe("provider-runtime", () => {
         {
           ...createOpenAiCatalogProviderPlugin({
             buildMissingAuthMessage: () =>
-              'No API key found for provider "openai". Use openai-codex/gpt-5.4.',
+              'No API key found for provider "openai". Use openai-codex/gpt-5.5.',
             buildUnknownModelHint,
           }),
         } as ProviderPlugin,
diff --git a/src/plugins/status.test.ts b/src/plugins/status.test.ts
index fd8955de044..258ad6acaca 100644
--- a/src/plugins/status.test.ts
+++ b/src/plugins/status.test.ts
@@ -437,7 +437,7 @@ describe("plugin status reports", () => {
           enabled: true,
           subagent: {
             allowModelOverride: true,
-            allowedModels: ["openai/gpt-5.4"],
+            allowedModels: ["openai/gpt-5.5"],
             hasAllowedModelsConfig: true,
           },
         },
@@ -467,7 +467,7 @@ describe("plugin status reports", () => {
     expectInspectPolicy(inspect!, {
       allowPromptInjection: undefined,
       allowModelOverride: true,
-      allowedModels: ["openai/gpt-5.4"],
+      allowedModels: ["openai/gpt-5.5"],
       hasAllowedModelsConfig: true,
     });
     expectPluginLoaderCall({ loadModules: true });
@@ -586,7 +586,7 @@ describe("plugin status reports", () => {
             hooks: { allowPromptInjection: false },
             subagent: {
               allowModelOverride: true,
-              allowedModels: ["openai/gpt-5.4"],
+              allowedModels: ["openai/gpt-5.5"],
             },
           },
         },
@@ -624,7 +624,7 @@ describe("plugin status reports", () => {
     expectInspectPolicy(inspect!, {
       allowPromptInjection: false,
       allowModelOverride: true,
-      allowedModels: ["openai/gpt-5.4"],
+      allowedModels: ["openai/gpt-5.5"],
       hasAllowedModelsConfig: true,
     });
     expect(inspect?.diagnostics).toEqual([
diff --git a/test/helpers/auto-reply/trigger-handling-test-harness.ts b/test/helpers/auto-reply/trigger-handling-test-harness.ts
index 7f3c451cd1c..2058acdef94 100644
--- a/test/helpers/auto-reply/trigger-handling-test-harness.ts
+++ b/test/helpers/auto-reply/trigger-handling-test-harness.ts
@@ -99,8 +99,8 @@ const modelCatalogMocks = getSharedMocks("openclaw.trigger-handling.model-catalo
       contextWindow: 200000,
     },
     { provider: "openai", id: "gpt-4.1-mini", name: "GPT-4.1 mini" },
-    { provider: "openai", id: "gpt-5.4", name: "GPT-5.2" },
-    { provider: "openai-codex", id: "gpt-5.4", name: "GPT-5.2 (Codex)" },
+    { provider: "openai", id: "gpt-5.5", name: "GPT-5.5" },
+    { provider: "openai-codex", id: "gpt-5.5", name: "GPT-5.5 (Codex)" },
     { provider: "minimax", id: "MiniMax-M2.7", name: "MiniMax M2.7" },
   ]),
   resetModelCatalogCacheForTest: vi.fn(),
diff --git a/test/helpers/plugins/plugin-runtime-mock.ts b/test/helpers/plugins/plugin-runtime-mock.ts
index 1b0451559e3..d0c7cb83a9f 100644
--- a/test/helpers/plugins/plugin-runtime-mock.ts
+++ b/test/helpers/plugins/plugin-runtime-mock.ts
@@ -10,7 +10,7 @@ import {
 import type { PluginRuntime } from "../../../src/plugins/runtime/types.js";
 
 const DEFAULT_PROVIDER = "openai";
-const DEFAULT_MODEL = "gpt-5.4";
+const DEFAULT_MODEL = "gpt-5.5";
 
 type DeepPartial<T> = {
   [K in keyof T]?: T[K] extends (...args: never[]) => unknown
diff --git a/test/helpers/plugins/provider-auth-contract.ts b/test/helpers/plugins/provider-auth-contract.ts
index d38f9e407ff..666c9e7715c 100644
--- a/test/helpers/plugins/provider-auth-contract.ts
+++ b/test/helpers/plugins/provider-auth-contract.ts
@@ -119,12 +119,12 @@ function buildOpenAICodexOAuthResult(params: {
       agents: {
         defaults: {
           models: {
-            "openai-codex/gpt-5.4": {},
+            "openai-codex/gpt-5.5": {},
           },
         },
       },
     },
-    defaultModel: "openai-codex/gpt-5.4",
+    defaultModel: "openai-codex/gpt-5.5",
     notes: undefined,
   };
 }
diff --git a/test/helpers/plugins/provider-catalog.ts b/test/helpers/plugins/provider-catalog.ts
index 44b56109515..454a3bb669f 100644
--- a/test/helpers/plugins/provider-catalog.ts
+++ b/test/helpers/plugins/provider-catalog.ts
@@ -1,5 +1,6 @@
 export {
   expectAugmentedCodexCatalog,
+  expectedAugmentedOpenaiCodexCatalogEntriesWithGpt55,
   expectCodexBuiltInSuppression,
   expectCodexMissingAuthHint,
 } from "../../../src/plugins/provider-runtime.test-support.js";
diff --git a/test/helpers/plugins/provider-runtime-contract.ts b/test/helpers/plugins/provider-runtime-contract.ts
index 152d8a9c891..756a8404934 100644
--- a/test/helpers/plugins/provider-runtime-contract.ts
+++ b/test/helpers/plugins/provider-runtime-contract.ts
@@ -445,6 +445,34 @@ export function describeOpenAIProviderRuntimeContract(load: ProviderRuntimeContr
       });
     });
 
+    it("owns openai gpt-5.5 forward-compat resolution", () => {
+      const provider = requireProviderContractProvider("openai");
+      const model = provider.resolveDynamicModel?.({
+        provider: "openai",
+        modelId: "gpt-5.5",
+        modelRegistry: {
+          find: (_provider: string, id: string) =>
+            id === "gpt-5.4"
+              ? createModel({
+                  id,
+                  provider: "openai",
+                  baseUrl: "https://api.openai.com/v1",
+                  input: ["text", "image"],
+                })
+              : null,
+        } as never,
+      });
+
+      expect(model).toMatchObject({
+        id: "gpt-5.5",
+        provider: "openai",
+        api: "openai-responses",
+        baseUrl: "https://api.openai.com/v1",
+        contextWindow: 1_000_000,
+        maxTokens: 128_000,
+      });
+    });
+
     it("owns openai gpt-5.4 mini forward-compat resolution", () => {
       const provider = requireProviderContractProvider("openai");
       const model = provider.resolveDynamicModel?.({
@@ -542,6 +570,34 @@ export function describeOpenAIProviderRuntimeContract(load: ProviderRuntimeContr
       });
     });
 
+    it("owns forward-compat codex gpt-5.5 models", () => {
+      const provider = requireProviderContractProvider("openai-codex");
+      const model = provider.resolveDynamicModel?.({
+        provider: "openai-codex",
+        modelId: "gpt-5.5",
+        modelRegistry: {
+          find: (_provider: string, id: string) =>
+            id === "gpt-5.4"
+              ? createModel({
+                  id,
+                  api: "openai-codex-responses",
+                  provider: "openai-codex",
+                  baseUrl: "https://chatgpt.com/backend-api",
+                })
+              : null,
+        } as never,
+      });
+
+      expect(model).toMatchObject({
+        id: "gpt-5.5",
+        provider: "openai-codex",
+        api: "openai-codex-responses",
+        contextWindow: 1_000_000,
+        contextTokens: 272_000,
+        maxTokens: 128_000,
+      });
+    });
+
     it("owns forward-compat codex mini models", () => {
       const provider = requireProviderContractProvider("openai-codex");
       const model = provider.resolveDynamicModel?.({
diff --git a/ui/src/ui/views/agents-utils.test.ts b/ui/src/ui/views/agents-utils.test.ts
index 7ef10c38ef0..300f297e25f 100644
--- a/ui/src/ui/views/agents-utils.test.ts
+++ b/ui/src/ui/views/agents-utils.test.ts
@@ -183,7 +183,7 @@ describe("buildAgentContext", () => {
         id: "main",
         workspace: "/tmp/agent-workspace",
         model: {
-          primary: "openai/gpt-5.4",
+          primary: "openai/gpt-5.5",
           fallbacks: ["openai-codex/gpt-5.2-codex"],
         },
       },
@@ -194,7 +194,7 @@ describe("buildAgentContext", () => {
     );
 
     expect(context.workspace).toBe("/tmp/agent-workspace");
-    expect(context.model).toBe("openai/gpt-5.4 (+1 fallback)");
+    expect(context.model).toBe("openai/gpt-5.5 (+1 fallback)");
     expect(context.isDefault).toBe(true);
   });
 
@@ -206,7 +206,7 @@ describe("buildAgentContext", () => {
           defaults: {
             workspace: "/tmp/default-workspace",
             model: {
-              primary: "openai/gpt-5.4",
+              primary: "openai/gpt-5.5",
               fallbacks: ["openai-codex/gpt-5.2-codex"],
             },
           },
@@ -219,6 +219,6 @@ describe("buildAgentContext", () => {
     );
 
     expect(context.workspace).toBe("/tmp/default-workspace");
-    expect(context.model).toBe("openai/gpt-5.4 (+1 fallback)");
+    expect(context.model).toBe("openai/gpt-5.5 (+1 fallback)");
   });
 });
diff --git a/ui/src/ui/views/config-quick.test.ts b/ui/src/ui/views/config-quick.test.ts
index bb73e96f27e..3b6f708559a 100644
--- a/ui/src/ui/views/config-quick.test.ts
+++ b/ui/src/ui/views/config-quick.test.ts
@@ -6,7 +6,7 @@ import { renderQuickSettings, type QuickSettingsProps } from "./config-quick.ts"
 
 function createProps(overrides: Partial<QuickSettingsProps> = {}): QuickSettingsProps {
   return {
-    currentModel: "gpt-5.4",
+    currentModel: "gpt-5.5",
     thinkingLevel: "off",
     fastMode: false,
     onModelChange: vi.fn(),