diff --git a/examples/18-deepseek.ts b/examples/18-deepseek.ts
index 6c39193..937b2ef 100644
--- a/examples/18-deepseek.ts
+++ b/examples/18-deepseek.ts
@@ -23,7 +23,7 @@ import type { AgentConfig, OrchestratorEvent } from '../src/types.js'
 // ---------------------------------------------------------------------------
 const architect: AgentConfig = {
   name: 'architect',
-  model: 'deepseek-chat',
+  model: 'deepseek-reasoner',
   provider: 'deepseek',
   systemPrompt: `You are a software architect with deep experience in Node.js and REST API design.
 Your job is to design clear, production-quality API contracts and file/directory structures.
diff --git a/src/llm/deepseek.ts b/src/llm/deepseek.ts
index 0c63af0..cb52a24 100644
--- a/src/llm/deepseek.ts
+++ b/src/llm/deepseek.ts
@@ -23,7 +23,7 @@ export class DeepSeekAdapter extends OpenAIAdapter {
     // Allow override of baseURL (for proxies or future changes) but default to official DeepSeek endpoint.
     super(
       apiKey ?? process.env['DEEPSEEK_API_KEY'],
-      baseURL ?? 'https://api.deepseek.com'
+      baseURL ?? 'https://api.deepseek.com/v1'
     )
   }
 }