diff --git a/.github/labeler.yml b/.github/labeler.yml
index b6422060fea..5005cdd6b9b 100644
--- a/.github/labeler.yml
+++ b/.github/labeler.yml
@@ -234,6 +234,10 @@
   - changed-files:
       - any-glob-to-any-file:
           - "extensions/byteplus/**"
+"extensions: deepseek":
+  - changed-files:
+      - any-glob-to-any-file:
+          - "extensions/deepseek/**"
 "extensions: anthropic":
   - changed-files:
       - any-glob-to-any-file:
diff --git a/docs/docs.json b/docs/docs.json
index 80409046397..42852e724c9 100644
--- a/docs/docs.json
+++ b/docs/docs.json
@@ -1106,6 +1106,7 @@
                   "providers/cloudflare-ai-gateway",
                   "providers/claude-max-api-proxy",
                   "providers/deepgram",
+                  "providers/deepseek",
                   "providers/github-copilot",
                   "providers/huggingface",
                   "providers/kilocode",
diff --git a/docs/providers/deepseek.md b/docs/providers/deepseek.md
new file mode 100644
index 00000000000..755e4c408e2
--- /dev/null
+++ b/docs/providers/deepseek.md
@@ -0,0 +1,63 @@
+---
+summary: "DeepSeek setup (auth + model selection)"
+read_when:
+  - You want to use DeepSeek with OpenClaw
+  - You need the API key env var or CLI auth choice
+---
+
+# DeepSeek
+
+[DeepSeek](https://www.deepseek.com) provides powerful AI models with an OpenAI-compatible API.
+
+- Provider: `deepseek`
+- Auth: `DEEPSEEK_API_KEY`
+- API: OpenAI-compatible
+
+## Quick start
+
+1. Set the API key (recommended: store it for the Gateway):
+
+```bash
+openclaw setup --wizard --auth-choice deepseek-api-key
+```
+
+2. Set a default model:
+
+```json5
+{
+  agents: {
+    defaults: {
+      model: { primary: "deepseek/deepseek-chat" },
+    },
+  },
+}
+```
+
+## Non-interactive example
+
+```bash
+openclaw setup --wizard --non-interactive \
+  --mode local \
+  --auth-choice deepseek-api-key \
+  --deepseek-api-key "$DEEPSEEK_API_KEY"
+```
+
+This will set `deepseek/deepseek-chat` as the default model.
+
+## Environment note
+
+If the Gateway runs as a daemon (launchd/systemd), make sure `DEEPSEEK_API_KEY`
+is available to that process (for example, in `~/.openclaw/.env` or via
+`env.shellEnv`).
+
+## Available models
+
+| Model ID            | Name                     | Type      | Context |
+| ------------------- | ------------------------ | --------- | ------- |
+| `deepseek-chat`     | DeepSeek Chat (V3.2)     | General   | 128K    |
+| `deepseek-reasoner` | DeepSeek Reasoner (V3.2) | Reasoning | 128K    |
+
+- **deepseek-chat** corresponds to DeepSeek-V3.2 in non-thinking mode.
+- **deepseek-reasoner** corresponds to DeepSeek-V3.2 in thinking mode with chain-of-thought reasoning.
+
+Get your API key at [platform.deepseek.com](https://platform.deepseek.com/api_keys).
diff --git a/extensions/deepseek/index.ts b/extensions/deepseek/index.ts
new file mode 100644
index 00000000000..531e3afff13
--- /dev/null
+++ b/extensions/deepseek/index.ts
@@ -0,0 +1,55 @@
+import { emptyPluginConfigSchema, type OpenClawPluginApi } from "openclaw/plugin-sdk/core";
+import { createProviderApiKeyAuthMethod } from "openclaw/plugin-sdk/provider-auth";
+import { buildSingleProviderApiKeyCatalog } from "openclaw/plugin-sdk/provider-catalog";
+import { applyDeepSeekConfig, DEEPSEEK_DEFAULT_MODEL_REF } from "./onboard.js";
+import { buildDeepSeekProvider } from "./provider-catalog.js";
+
+const PROVIDER_ID = "deepseek";
+
+const deepseekPlugin = {
+  id: PROVIDER_ID,
+  name: "DeepSeek Provider",
+  description: "Bundled DeepSeek provider plugin",
+  configSchema: emptyPluginConfigSchema(),
+  register(api: OpenClawPluginApi) {
+    api.registerProvider({
+      id: PROVIDER_ID,
+      label: "DeepSeek",
+      docsPath: "/providers/deepseek",
+      envVars: ["DEEPSEEK_API_KEY"],
+      auth: [
+        createProviderApiKeyAuthMethod({
+          providerId: PROVIDER_ID,
+          methodId: "api-key",
+          label: "DeepSeek API key",
+          hint: "API key",
+          optionKey: "deepseekApiKey",
+          flagName: "--deepseek-api-key",
+          envVar: "DEEPSEEK_API_KEY",
+          promptMessage: "Enter DeepSeek API key",
+          defaultModel: DEEPSEEK_DEFAULT_MODEL_REF,
+          expectedProviders: ["deepseek"],
+          applyConfig: (cfg) => applyDeepSeekConfig(cfg),
+          wizard: {
+            choiceId: "deepseek-api-key",
+            choiceLabel: "DeepSeek API key",
+            groupId: "deepseek",
+            groupLabel: "DeepSeek",
+            groupHint: "API key",
+          },
+        }),
+      ],
+      catalog: {
+        order: "simple",
+        run: (ctx) =>
+          buildSingleProviderApiKeyCatalog({
+            ctx,
+            providerId: PROVIDER_ID,
+            buildProvider: buildDeepSeekProvider,
+          }),
+      },
+    });
+  },
+};
+
+export default deepseekPlugin;
diff --git a/extensions/deepseek/onboard.ts b/extensions/deepseek/onboard.ts
new file mode 100644
index 00000000000..3bc613e63ab
--- /dev/null
+++ b/extensions/deepseek/onboard.ts
@@ -0,0 +1,35 @@
+import {
+  buildDeepSeekModelDefinition,
+  DEEPSEEK_BASE_URL,
+  DEEPSEEK_MODEL_CATALOG,
+} from "openclaw/plugin-sdk/provider-models";
+import {
+  applyAgentDefaultModelPrimary,
+  applyProviderConfigWithModelCatalog,
+  type OpenClawConfig,
+} from "openclaw/plugin-sdk/provider-onboard";
+
+export const DEEPSEEK_DEFAULT_MODEL_REF = "deepseek/deepseek-chat";
+
+export function applyDeepSeekProviderConfig(cfg: OpenClawConfig): OpenClawConfig {
+  const models = { ...cfg.agents?.defaults?.models };
+  models[DEEPSEEK_DEFAULT_MODEL_REF] = {
+    ...models[DEEPSEEK_DEFAULT_MODEL_REF],
+    alias: models[DEEPSEEK_DEFAULT_MODEL_REF]?.alias ?? "DeepSeek",
+  };
+
+  return applyProviderConfigWithModelCatalog(cfg, {
+    agentModels: models,
+    providerId: "deepseek",
+    api: "openai-completions",
+    baseUrl: DEEPSEEK_BASE_URL,
+    catalogModels: DEEPSEEK_MODEL_CATALOG.map(buildDeepSeekModelDefinition),
+  });
+}
+
+export function applyDeepSeekConfig(cfg: OpenClawConfig): OpenClawConfig {
+  return applyAgentDefaultModelPrimary(
+    applyDeepSeekProviderConfig(cfg),
+    DEEPSEEK_DEFAULT_MODEL_REF,
+  );
+}
diff --git a/extensions/deepseek/openclaw.plugin.json b/extensions/deepseek/openclaw.plugin.json
new file mode 100644
index 00000000000..55c9c2779e8
--- /dev/null
+++ b/extensions/deepseek/openclaw.plugin.json
@@ -0,0 +1,27 @@
+{
+  "id": "deepseek",
+  "providers": ["deepseek"],
+  "providerAuthEnvVars": {
+    "deepseek": ["DEEPSEEK_API_KEY"]
+  },
+  "providerAuthChoices": [
+    {
+      "provider": "deepseek",
+      "method": "api-key",
+      "choiceId": "deepseek-api-key",
+      "choiceLabel": "DeepSeek API key",
+      "groupId": "deepseek",
+      "groupLabel": "DeepSeek",
+      "groupHint": "API key",
+      "optionKey": "deepseekApiKey",
+      "cliFlag": "--deepseek-api-key",
+      "cliOption": "--deepseek-api-key <key>",
+      "cliDescription": "DeepSeek API key"
+    }
+  ],
+  "configSchema": {
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {}
+  }
+}
diff --git a/extensions/deepseek/package.json b/extensions/deepseek/package.json
new file mode 100644
index 00000000000..3a83021c043
--- /dev/null
+++ b/extensions/deepseek/package.json
@@ -0,0 +1,12 @@
+{
+  "name": "@openclaw/deepseek-provider",
+  "version": "2026.3.14",
+  "private": true,
+  "description": "OpenClaw DeepSeek provider plugin",
+  "type": "module",
+  "openclaw": {
+    "extensions": [
+      "./index.ts"
+    ]
+  }
+}
diff --git a/extensions/deepseek/provider-catalog.ts b/extensions/deepseek/provider-catalog.ts
new file mode 100644
index 00000000000..ef8054d5046
--- /dev/null
+++ b/extensions/deepseek/provider-catalog.ts
@@ -0,0 +1,14 @@
+import {
+  buildDeepSeekModelDefinition,
+  DEEPSEEK_BASE_URL,
+  DEEPSEEK_MODEL_CATALOG,
+  type ModelProviderConfig,
+} from "openclaw/plugin-sdk/provider-models";
+
+export function buildDeepSeekProvider(): ModelProviderConfig {
+  return {
+    baseUrl: DEEPSEEK_BASE_URL,
+    api: "openai-completions",
+    models: DEEPSEEK_MODEL_CATALOG.map(buildDeepSeekModelDefinition),
+  };
+}
diff --git a/src/agents/deepseek-models.ts b/src/agents/deepseek-models.ts
new file mode 100644
index 00000000000..71a83e2de2f
--- /dev/null
+++ b/src/agents/deepseek-models.ts
@@ -0,0 +1,46 @@
+import type { ModelDefinitionConfig } from "../config/types.models.js";
+
+export const DEEPSEEK_BASE_URL = "https://api.deepseek.com";
+
+const DEEPSEEK_DEFAULT_COST = {
+  input: 0,
+  output: 0,
+  cacheRead: 0,
+  cacheWrite: 0,
+};
+
+export const DEEPSEEK_MODEL_CATALOG: ModelDefinitionConfig[] = [
+  {
+    id: "deepseek-chat",
+    name: "DeepSeek Chat",
+    reasoning: false,
+    input: ["text"],
+    contextWindow: 131072,
+    maxTokens: 8192,
+    cost: DEEPSEEK_DEFAULT_COST,
+  },
+  {
+    id: "deepseek-reasoner",
+    name: "DeepSeek Reasoner",
+    reasoning: true,
+    input: ["text"],
+    contextWindow: 131072,
+    maxTokens: 8192,
+    cost: DEEPSEEK_DEFAULT_COST,
+  },
+];
+
+export function buildDeepSeekModelDefinition(
+  model: (typeof DEEPSEEK_MODEL_CATALOG)[number],
+): ModelDefinitionConfig {
+  return {
+    id: model.id,
+    name: model.name,
+    api: "openai-completions",
+    reasoning: model.reasoning,
+    input: model.input,
+    cost: model.cost,
+    contextWindow: model.contextWindow,
+    maxTokens: model.maxTokens,
+  };
+}
diff --git a/src/agents/models-config.providers.deepseek.test.ts b/src/agents/models-config.providers.deepseek.test.ts
new file mode 100644
index 00000000000..99678e2bdc3
--- /dev/null
+++ b/src/agents/models-config.providers.deepseek.test.ts
@@ -0,0 +1,27 @@
+import { describe, expect, it } from "vitest";
+import { buildDeepSeekProvider } from "./models-config.providers.static.js";
+
+describe("DeepSeek provider", () => {
+  it("should build deepseek provider with correct configuration", () => {
+    const provider = buildDeepSeekProvider();
+    expect(provider.baseUrl).toBe("https://api.deepseek.com");
+    expect(provider.api).toBe("openai-completions");
+    expect(provider.models).toBeDefined();
+    expect(provider.models.length).toBeGreaterThan(0);
+  });
+
+  it("should include both deepseek-chat and deepseek-reasoner models", () => {
+    const provider = buildDeepSeekProvider();
+    const modelIds = provider.models.map((m) => m.id);
+    expect(modelIds).toContain("deepseek-chat");
+    expect(modelIds).toContain("deepseek-reasoner");
+  });
+
+  it("should mark deepseek-reasoner as a reasoning model", () => {
+    const provider = buildDeepSeekProvider();
+    const reasoner = provider.models.find((m) => m.id === "deepseek-reasoner");
+    const chat = provider.models.find((m) => m.id === "deepseek-chat");
+    expect(reasoner?.reasoning).toBe(true);
+    expect(chat?.reasoning).toBe(false);
+  });
+});
diff --git a/src/agents/models-config.providers.static.ts b/src/agents/models-config.providers.static.ts
index 71184e12286..d6fd8179958 100644
--- a/src/agents/models-config.providers.static.ts
+++ b/src/agents/models-config.providers.static.ts
@@ -2,6 +2,7 @@ export {
   buildBytePlusCodingProvider,
   buildBytePlusProvider,
 } from "../../extensions/byteplus/provider-catalog.js";
+export { buildDeepSeekProvider } from "../../extensions/deepseek/provider-catalog.js";
 export { buildKimiCodingProvider } from "../../extensions/kimi-coding/provider-catalog.js";
 export { buildKilocodeProvider } from "../../extensions/kilocode/provider-catalog.js";
 export {
diff --git a/src/commands/onboard-types.ts b/src/commands/onboard-types.ts
index 832fae75448..748de6bc522 100644
--- a/src/commands/onboard-types.ts
+++ b/src/commands/onboard-types.ts
@@ -10,6 +10,7 @@ export type BuiltInAuthChoice =
   | "claude-cli"
   | "token"
   | "chutes"
+  | "deepseek-api-key"
   | "openai-codex"
   | "openai-api-key"
   | "openrouter-api-key"
@@ -58,6 +59,7 @@ export type BuiltInAuthChoiceGroupId =
   | "openai"
   | "anthropic"
   | "chutes"
+  | "deepseek"
   | "google"
   | "copilot"
   | "openrouter"
@@ -115,6 +117,7 @@ export type OnboardOptions = {
   /** API key persistence mode for setup flows (default: plaintext). */
   secretInputMode?: SecretInputMode;
   anthropicApiKey?: string;
+  deepseekApiKey?: string;
   openaiApiKey?: string;
   mistralApiKey?: string;
   openrouterApiKey?: string;
diff --git a/src/plugin-sdk/provider-models.ts b/src/plugin-sdk/provider-models.ts
index 5694a540075..b3d903b61b4 100644
--- a/src/plugin-sdk/provider-models.ts
+++ b/src/plugin-sdk/provider-models.ts
@@ -41,6 +41,11 @@ export {
   SYNTHETIC_DEFAULT_MODEL_REF,
   SYNTHETIC_MODEL_CATALOG,
 } from "../agents/synthetic-models.js";
+export {
+  buildDeepSeekModelDefinition,
+  DEEPSEEK_BASE_URL,
+  DEEPSEEK_MODEL_CATALOG,
+} from "../agents/deepseek-models.js";
 export {
   buildTogetherModelDefinition,
   TOGETHER_BASE_URL,
diff --git a/src/plugins/bundled-provider-auth-env-vars.ts b/src/plugins/bundled-provider-auth-env-vars.ts
index 42ca376959d..fac2cae8a73 100644
--- a/src/plugins/bundled-provider-auth-env-vars.ts
+++ b/src/plugins/bundled-provider-auth-env-vars.ts
@@ -2,6 +2,7 @@ import ANTHROPIC_MANIFEST from "../../extensions/anthropic/openclaw.plugin.json"
 import BYTEPLUS_MANIFEST from "../../extensions/byteplus/openclaw.plugin.json" with { type: "json" };
 import CLOUDFLARE_AI_GATEWAY_MANIFEST from "../../extensions/cloudflare-ai-gateway/openclaw.plugin.json" with { type: "json" };
 import COPILOT_PROXY_MANIFEST from "../../extensions/copilot-proxy/openclaw.plugin.json" with { type: "json" };
+import DEEPSEEK_MANIFEST from "../../extensions/deepseek/openclaw.plugin.json" with { type: "json" };
 import GITHUB_COPILOT_MANIFEST from "../../extensions/github-copilot/openclaw.plugin.json" with { type: "json" };
 import GOOGLE_MANIFEST from "../../extensions/google/openclaw.plugin.json" with { type: "json" };
 import HUGGINGFACE_MANIFEST from "../../extensions/huggingface/openclaw.plugin.json" with { type: "json" };
@@ -63,6 +64,7 @@ export const BUNDLED_PROVIDER_AUTH_ENV_VAR_CANDIDATES = collectBundledProviderAu
   BYTEPLUS_MANIFEST,
   CLOUDFLARE_AI_GATEWAY_MANIFEST,
   COPILOT_PROXY_MANIFEST,
+  DEEPSEEK_MANIFEST,
   GITHUB_COPILOT_MANIFEST,
   GOOGLE_MANIFEST,
   HUGGINGFACE_MANIFEST,