diff --git a/packages/core/src/core/openaiContentGenerator/provider/deepseek.test.ts b/packages/core/src/core/openaiContentGenerator/provider/deepseek.test.ts
index 12606d11c03..59d25cee3d1 100644
--- a/packages/core/src/core/openaiContentGenerator/provider/deepseek.test.ts
+++ b/packages/core/src/core/openaiContentGenerator/provider/deepseek.test.ts
@@ -516,10 +516,8 @@ describe('DeepSeekOpenAICompatibleProvider', () => {
   });
 
   describe('getDefaultGenerationConfig', () => {
-    it('returns temperature 0', () => {
-      expect(provider.getDefaultGenerationConfig()).toEqual({
-        temperature: 0,
-      });
+    it('does not force a deterministic temperature by default', () => {
+      expect(provider.getDefaultGenerationConfig()).toEqual({});
     });
   });
 });
diff --git a/packages/core/src/core/openaiContentGenerator/provider/deepseek.ts b/packages/core/src/core/openaiContentGenerator/provider/deepseek.ts
index 10ade3c1de1..ce882c2221d 100644
--- a/packages/core/src/core/openaiContentGenerator/provider/deepseek.ts
+++ b/packages/core/src/core/openaiContentGenerator/provider/deepseek.ts
@@ -136,9 +136,7 @@ export class DeepSeekOpenAICompatibleProvider extends DefaultOpenAICompatiblePro
   }
 
   override getDefaultGenerationConfig(): GenerateContentConfig {
-    return {
-      temperature: 0,
-    };
+    return {};
   }
 }