diff --git a/extensions/google/index.ts b/extensions/google/index.ts
index 16acd0da509..cfef94a2066 100644
--- a/extensions/google/index.ts
+++ b/extensions/google/index.ts
@@ -9,7 +9,11 @@ import {
 import { createProviderApiKeyAuthMethod } from "openclaw/plugin-sdk/provider-auth-api-key";
 import type { ProviderPlugin } from "openclaw/plugin-sdk/provider-model-shared";
 import { createGoogleThinkingPayloadWrapper } from "openclaw/plugin-sdk/provider-stream";
-import { GOOGLE_GEMINI_DEFAULT_MODEL, applyGoogleGeminiModelDefault } from "./api.js";
+import {
+  GOOGLE_GEMINI_DEFAULT_MODEL,
+  applyGoogleGeminiModelDefault,
+  normalizeGoogleModelId,
+} from "./api.js";
 import { buildGoogleGeminiCliBackend } from "./cli-backend.js";
 import { isModernGoogleModel, resolveGoogle31ForwardCompatModel } from "./provider-models.js";
 import { createGeminiWebSearchProvider } from "./src/gemini-web-search-provider.js";
@@ -131,6 +135,7 @@ function createLazyGoogleGeminiCliProvider(): ProviderPlugin {
         methodId: "oauth",
       },
     },
+    normalizeModelId: ({ modelId }) => normalizeGoogleModelId(modelId),
     resolveDynamicModel: (ctx) =>
       resolveGoogle31ForwardCompatModel({ providerId: GOOGLE_GEMINI_CLI_PROVIDER_ID, ctx }),
     isModernModelRef: ({ modelId }) => isModernGoogleModel(modelId),
@@ -204,6 +209,7 @@ export default definePluginEntry({
       id: "google",
       label: "Google AI Studio",
       docsPath: "/providers/models",
+      aliases: ["google-vertex"],
       envVars: ["GEMINI_API_KEY", "GOOGLE_API_KEY"],
       auth: [
         createProviderApiKeyAuthMethod({
@@ -227,6 +233,7 @@ export default definePluginEntry({
           },
         }),
       ],
+      normalizeModelId: ({ modelId }) => normalizeGoogleModelId(modelId),
       resolveDynamicModel: (ctx) =>
         resolveGoogle31ForwardCompatModel({ providerId: "google", ctx }),
       wrapStreamFn: (ctx) => createGoogleThinkingPayloadWrapper(ctx.streamFn, ctx.thinkingLevel),
diff --git a/extensions/xai/index.ts b/extensions/xai/index.ts
index 05983b88baf..dabf35704e8 100644
--- a/extensions/xai/index.ts
+++ b/extensions/xai/index.ts
@@ -1,6 +1,6 @@
 import { defineSingleProviderPluginEntry } from "openclaw/plugin-sdk/provider-entry";
 import { createToolStreamWrapper } from "openclaw/plugin-sdk/provider-stream";
-import { applyXaiModelCompat, buildXaiProvider } from "./api.js";
+import { applyXaiModelCompat, buildXaiProvider, normalizeXaiModelId } from "./api.js";
 import { applyXaiConfig, XAI_DEFAULT_MODEL_REF } from "./onboard.js";
 import { isModernXaiModel, resolveXaiForwardCompatModel } from "./provider-models.js";
 import {
@@ -57,6 +57,7 @@ export default defineSingleProviderPluginEntry({
       return createToolStreamWrapper(streamFn, ctx.extraParams?.tool_stream !== false);
     },
     normalizeResolvedModel: ({ model }) => applyXaiModelCompat(model),
+    normalizeModelId: ({ modelId }) => normalizeXaiModelId(modelId),
     resolveDynamicModel: (ctx) => resolveXaiForwardCompatModel({ providerId: PROVIDER_ID, ctx }),
     isModernModelRef: ({ modelId }) => isModernXaiModel(modelId),
   },
diff --git a/src/agents/model-selection.plugin-runtime.test.ts b/src/agents/model-selection.plugin-runtime.test.ts
new file mode 100644
index 00000000000..ba62b712261
--- /dev/null
+++ b/src/agents/model-selection.plugin-runtime.test.ts
@@ -0,0 +1,41 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const normalizeProviderModelIdWithPluginMock = vi.fn();
+
+vi.mock("../plugins/provider-runtime.js", () => ({
+  normalizeProviderModelIdWithPlugin: (params: unknown) =>
+    normalizeProviderModelIdWithPluginMock(params),
+}));
+
+describe("model-selection plugin runtime normalization", () => {
+  beforeEach(() => {
+    vi.resetModules();
+    normalizeProviderModelIdWithPluginMock.mockReset();
+  });
+
+  it("delegates provider-owned model id normalization to plugin runtime hooks", async () => {
+    normalizeProviderModelIdWithPluginMock.mockImplementation(({ provider, context }) => {
+      if (
+        provider === "xai" &&
+        (context as { modelId?: string }).modelId === "grok-4.20-experimental-beta-0304-reasoning"
+      ) {
+        return "grok-4.20-beta-latest-reasoning";
+      }
+      return undefined;
+    });
+
+    const { parseModelRef } = await import("./model-selection.js");
+
+    expect(parseModelRef("grok-4.20-experimental-beta-0304-reasoning", "xai")).toEqual({
+      provider: "xai",
+      model: "grok-4.20-beta-latest-reasoning",
+    });
+    expect(normalizeProviderModelIdWithPluginMock).toHaveBeenCalledWith({
+      provider: "xai",
+      context: {
+        provider: "xai",
+        modelId: "grok-4.20-experimental-beta-0304-reasoning",
+      },
+    });
+  });
+});
diff --git a/src/agents/model-selection.ts b/src/agents/model-selection.ts
index 758ce74d1bb..42689f78dbc 100644
--- a/src/agents/model-selection.ts
+++ b/src/agents/model-selection.ts
@@ -6,9 +6,8 @@ import {
   toAgentModelListLike,
 } from "../config/model-input.js";
 import { createSubsystemLogger } from "../logging/subsystem.js";
-import { normalizeGoogleModelId } from "../plugin-sdk/google.js";
-import { normalizeXaiModelId } from "../plugin-sdk/xai.js";
 import { resolveRuntimeCliBackends } from "../plugins/cli-backends.runtime.js";
+import { normalizeProviderModelIdWithPlugin } from "../plugins/provider-runtime.js";
 import { sanitizeForLog } from "../terminal/ansi.js";
 import {
   resolveAgentConfig,
@@ -125,12 +124,6 @@ function normalizeProviderModelId(provider: string, model: string): string {
       return `anthropic/${normalizedAnthropicModel}`;
     }
   }
-  if (provider === "google" || provider === "google-vertex") {
-    return normalizeGoogleModelId(model);
-  }
-  if (provider === "xai") {
-    return normalizeXaiModelId(model);
-  }
   // OpenRouter-native models (e.g. "openrouter/aurora-alpha") need the full
   // "openrouter/<name>" as the model ID sent to the API. Models from external
   // providers already contain a slash (e.g. "anthropic/claude-sonnet-4-5") and
@@ -138,7 +131,15 @@ function normalizeProviderModelId(provider: string, model: string): string {
   if (provider === "openrouter" && !model.includes("/")) {
     return `openrouter/${model}`;
   }
-  return model;
+  return (
+    normalizeProviderModelIdWithPlugin({
+      provider,
+      context: {
+        provider,
+        modelId: model,
+      },
+    }) ?? model
+  );
 }
 
 export function normalizeModelRef(provider: string, model: string): ModelRef {
diff --git a/src/agents/models-config.providers.ts b/src/agents/models-config.providers.ts
index 1ff0cd8c100..e7fb3e8ecfe 100644
--- a/src/agents/models-config.providers.ts
+++ b/src/agents/models-config.providers.ts
@@ -11,5 +11,3 @@ export type {
 export { applyNativeStreamingUsageCompat } from "./models-config.providers.policy.js";
 export { enforceSourceManagedProviderSecrets } from "./models-config.providers.source-managed.js";
 export { resolveOllamaApiBase } from "../plugin-sdk/ollama-surface.js";
-export { normalizeGoogleModelId } from "../plugin-sdk/google.js";
-export { normalizeXaiModelId } from "../plugin-sdk/xai.js";
diff --git a/src/gateway/model-pricing-cache.ts b/src/gateway/model-pricing-cache.ts
index eb3f63b3000..0561428ea66 100644
--- a/src/gateway/model-pricing-cache.ts
+++ b/src/gateway/model-pricing-cache.ts
@@ -9,8 +9,7 @@ import {
 } from "../agents/model-selection.js";
 import type { OpenClawConfig } from "../config/config.js";
 import { createSubsystemLogger } from "../logging/subsystem.js";
-import { normalizeGoogleModelId } from "../plugin-sdk/google.js";
-import { normalizeXaiModelId } from "../plugin-sdk/xai.js";
+import { normalizeProviderModelIdWithPlugin } from "../plugins/provider-runtime.js";
 
 export type CachedModelPricing = {
   input: number;
@@ -151,12 +150,14 @@ function canonicalizeOpenRouterLookupId(id: string): string {
       .replace(/^claude-(\d+)\.(\d+)-/u, "claude-$1-$2-")
       .replace(/^claude-([a-z]+)-(\d+)\.(\d+)$/u, "claude-$1-$2-$3");
   }
-  if (provider === "google") {
-    model = normalizeGoogleModelId(model);
-  }
-  if (provider === "x-ai") {
-    model = normalizeXaiModelId(model);
-  }
+  model =
+    normalizeProviderModelIdWithPlugin({
+      provider,
+      context: {
+        provider,
+        modelId: model,
+      },
+    }) ?? model;
   return `${provider}/${model}`;
 }
 
diff --git a/src/plugin-sdk/plugin-entry.ts b/src/plugin-sdk/plugin-entry.ts
index ee100b0784d..866a5f796fd 100644
--- a/src/plugin-sdk/plugin-entry.ts
+++ b/src/plugin-sdk/plugin-entry.ts
@@ -30,6 +30,7 @@ import type {
   ProviderDiscoveryContext,
   ProviderFetchUsageSnapshotContext,
   ProviderModernModelPolicyContext,
+  ProviderNormalizeModelIdContext,
   ProviderNormalizeResolvedModelContext,
   ProviderPrepareDynamicModelContext,
   ProviderPrepareExtraParamsContext,
@@ -65,6 +66,7 @@ export type {
   ProviderDefaultThinkingPolicyContext,
   ProviderFetchUsageSnapshotContext,
   ProviderModernModelPolicyContext,
+  ProviderNormalizeModelIdContext,
   ProviderPreparedRuntimeAuth,
   ProviderResolvedUsageAuth,
   ProviderPrepareExtraParamsContext,
diff --git a/src/plugins/provider-runtime.test.ts b/src/plugins/provider-runtime.test.ts
index 8c0067e01ec..17b4a2b5049 100644
--- a/src/plugins/provider-runtime.test.ts
+++ b/src/plugins/provider-runtime.test.ts
@@ -25,6 +25,7 @@ let buildProviderAuthDoctorHintWithPlugin: typeof import("./provider-runtime.js"
 let buildProviderMissingAuthMessageWithPlugin: typeof import("./provider-runtime.js").buildProviderMissingAuthMessageWithPlugin;
 let buildProviderUnknownModelHintWithPlugin: typeof import("./provider-runtime.js").buildProviderUnknownModelHintWithPlugin;
 let formatProviderAuthProfileApiKeyWithPlugin: typeof import("./provider-runtime.js").formatProviderAuthProfileApiKeyWithPlugin;
+let normalizeProviderModelIdWithPlugin: typeof import("./provider-runtime.js").normalizeProviderModelIdWithPlugin;
 let prepareProviderExtraParams: typeof import("./provider-runtime.js").prepareProviderExtraParams;
 let resolveProviderStreamFn: typeof import("./provider-runtime.js").resolveProviderStreamFn;
 let resolveProviderCacheTtlEligibility: typeof import("./provider-runtime.js").resolveProviderCacheTtlEligibility;
@@ -192,6 +193,7 @@ describe("provider-runtime", () => {
       buildProviderMissingAuthMessageWithPlugin,
       buildProviderUnknownModelHintWithPlugin,
       formatProviderAuthProfileApiKeyWithPlugin,
+      normalizeProviderModelIdWithPlugin,
       prepareProviderExtraParams,
       resolveProviderStreamFn,
       resolveProviderCacheTtlEligibility,
@@ -247,6 +249,34 @@ describe("provider-runtime", () => {
     });
   });
 
+  it("can normalize model ids through provider aliases without changing ownership", () => {
+    resolvePluginProvidersMock.mockReturnValue([
+      {
+        id: "google",
+        label: "Google",
+        aliases: ["google-vertex"],
+        auth: [],
+        normalizeModelId: ({ modelId }) => modelId.replace("flash-lite", "flash-lite-preview"),
+      },
+    ]);
+
+    expect(
+      normalizeProviderModelIdWithPlugin({
+        provider: "google-vertex",
+        context: {
+          provider: "google-vertex",
+          modelId: "gemini-3.1-flash-lite",
+        },
+      }),
+    ).toBe("gemini-3.1-flash-lite-preview");
+    expect(resolveOwningPluginIdsForProviderMock).toHaveBeenCalledWith(
+      expect.objectContaining({
+        provider: "google-vertex",
+      }),
+    );
+    expect(resolvePluginProvidersMock).toHaveBeenCalledTimes(1);
+  });
+
   it("invalidates cached runtime providers when config mutates in place", () => {
     const config = {
       plugins: {
@@ -342,6 +372,7 @@ describe("provider-runtime", () => {
           id: DEMO_PROVIDER_ID,
           label: "Demo",
           auth: [],
+          normalizeModelId: ({ modelId }) => modelId.replace("-legacy", ""),
           resolveDynamicModel: () => MODEL,
           prepareDynamicModel,
           capabilities: {
@@ -395,6 +426,16 @@ describe("provider-runtime", () => {
       }),
     ).toMatchObject(MODEL);
 
+    expect(
+      normalizeProviderModelIdWithPlugin({
+        provider: DEMO_PROVIDER_ID,
+        context: {
+          provider: DEMO_PROVIDER_ID,
+          modelId: "demo-model-legacy",
+        },
+      }),
+    ).toBe("demo-model");
+
     await prepareProviderDynamicModel({
       provider: DEMO_PROVIDER_ID,
       context: createDemoRuntimeContext({
diff --git a/src/plugins/provider-runtime.ts b/src/plugins/provider-runtime.ts
index 23dec34954f..90bd54bb1e6 100644
--- a/src/plugins/provider-runtime.ts
+++ b/src/plugins/provider-runtime.ts
@@ -19,6 +19,7 @@ import type {
   ProviderCreateStreamFnContext,
   ProviderDefaultThinkingPolicyContext,
   ProviderFetchUsageSnapshotContext,
+  ProviderNormalizeModelIdContext,
   ProviderModernModelPolicyContext,
   ProviderPrepareExtraParamsContext,
   ProviderPrepareDynamicModelContext,
@@ -217,6 +218,25 @@ export function normalizeProviderResolvedModelWithPlugin(params: {
   );
 }
 
+export function normalizeProviderModelIdWithPlugin(params: {
+  provider: string;
+  config?: OpenClawConfig;
+  workspaceDir?: string;
+  env?: NodeJS.ProcessEnv;
+  context: ProviderNormalizeModelIdContext;
+}): string | undefined {
+  const plugin =
+    resolveProviderRuntimePlugin(params) ??
+    resolveProviderPluginsForHooks({
+      config: params.config,
+      workspaceDir: params.workspaceDir,
+      env: params.env,
+    }).find((candidate) => matchesProviderId(candidate, params.provider));
+  const normalized = plugin?.normalizeModelId?.(params.context);
+  const trimmed = normalized?.trim();
+  return trimmed ? trimmed : undefined;
+}
+
 export function resolveProviderCapabilitiesWithPlugin(params: {
   provider: string;
   config?: OpenClawConfig;
diff --git a/src/plugins/types.ts b/src/plugins/types.ts
index f130b07eba9..77b506244ef 100644
--- a/src/plugins/types.ts
+++ b/src/plugins/types.ts
@@ -363,6 +363,17 @@ export type ProviderNormalizeResolvedModelContext = {
   model: ProviderRuntimeModel;
 };
 
+/**
+ * Provider-owned model-id normalization before config/runtime lookup.
+ *
+ * Use this for provider-specific alias cleanup that should stay with the
+ * plugin rather than in core string tables.
+ */
+export type ProviderNormalizeModelIdContext = {
+  provider: string;
+  modelId: string;
+};
+
 /**
  * Runtime auth input for providers that need an extra exchange step before
  * inference. The incoming `apiKey` is the raw credential resolved from auth
@@ -829,6 +840,13 @@ export type ProviderPlugin = {
   normalizeResolvedModel?: (
     ctx: ProviderNormalizeResolvedModelContext,
   ) => ProviderRuntimeModel | null | undefined;
+  /**
+   * Provider-owned model-id normalization.
+   *
+   * Runs before model lookup/canonicalization. Use this for alias cleanup such
+   * as provider-owned preview/legacy model ids.
+   */
+  normalizeModelId?: (ctx: ProviderNormalizeModelIdContext) => string | null | undefined;
   /**
    * Static provider capability overrides consumed by shared transcript/tooling
    * logic.