diff --git a/README.md b/README.md
index f9adcb5..3739f19 100644
--- a/README.md
+++ b/README.md
@@ -209,7 +209,7 @@ Set `LLM_PROVIDER` to one of: `anthropic`, `openai`, `gemini`, `codex`, `openrou
 | `openrouter` | `LLM_API_KEY` | openrouter/auto |
 | `codex` | None (uses `~/.codex/auth.json`) | gpt-5.3-codex |
 | `minimax` | `LLM_API_KEY` | MiniMax-M2.5 |
-| `mistral` | `LLM_API_KEY` | mistral-medium |
+| `mistral` | `LLM_API_KEY` | mistral-large-latest |
 
 For Codex, run `npx @openai/codex login` to authenticate via your ChatGPT subscription.
 
diff --git a/lib/llm/mistral.mjs b/lib/llm/mistral.mjs
index fa3e525..dde09db 100644
--- a/lib/llm/mistral.mjs
+++ b/lib/llm/mistral.mjs
@@ -8,7 +8,7 @@ export class MistralProvider extends LLMProvider {
     super(config);
     this.name = 'mistral';
     this.apiKey = config.apiKey;
-    this.model = config.model || 'mistral-medium';
+    this.model = config.model || 'mistral-large-latest';
   }
 
   get isConfigured() { return !!this.apiKey; }
diff --git a/test/llm-mistral.test.mjs b/test/llm-mistral.test.mjs
index 2dc1d8d..24fe17d 100644
--- a/test/llm-mistral.test.mjs
+++ b/test/llm-mistral.test.mjs
@@ -50,7 +50,7 @@ describe('MistralProvider', () => {
     const mockResponse = {
       choices: [{ message: { content: 'Hello from Mistral' } }],
       usage: { prompt_tokens: 10, completion_tokens: 5 },
-      model: 'mistral-medium',
+      model: 'mistral-large-latest',
     };
     const originalFetch = globalThis.fetch;
     globalThis.fetch = mock.fn(() =>
@@ -61,14 +61,14 @@ describe('MistralProvider', () => {
       assert.equal(result.text, 'Hello from Mistral');
       assert.equal(result.usage.inputTokens, 10);
       assert.equal(result.usage.outputTokens, 5);
-      assert.equal(result.model, 'mistral-medium');
+      assert.equal(result.model, 'mistral-large-latest');
     } finally {
       globalThis.fetch = originalFetch;
     }
   });
 
   it('should send correct request format', async () => {
-    const provider = new MistralProvider({ apiKey: 'sk-test-key', model: 'mistral-medium' });
+    const provider = new MistralProvider({ apiKey: 'sk-test-key', model: 'mistral-large-latest' });
     let capturedUrl, capturedOpts;
     const originalFetch = globalThis.fetch;
     globalThis.fetch = mock.fn((url, opts) => {
@@ -79,7 +79,7 @@ describe('MistralProvider', () => {
         json: () => Promise.resolve({
           choices: [{ message: { content: 'ok' } }],
           usage: { prompt_tokens: 1, completion_tokens: 1 },
-          model: 'mistral-medium',
+          model: 'mistral-large-latest',
         }),
       });
     });
@@ -91,7 +91,7 @@ describe('MistralProvider', () => {
       assert.equal(headers['Content-Type'], 'application/json');
       assert.equal(headers['Authorization'], 'Bearer sk-test-key');
       const body = JSON.parse(capturedOpts.body);
-      assert.equal(body.model, 'mistral-medium');
+      assert.equal(body.model, 'mistral-large-latest');
       assert.equal(body.max_tokens, 2048);
       assert.equal(body.messages[0].role, 'system');
       assert.equal(body.messages[0].content, 'system prompt');