diff --git a/shared/defaultLLMs.ts b/shared/defaultLLMs.ts
index 3e9f62c7c..ec883c6f7 100644
--- a/shared/defaultLLMs.ts
+++ b/shared/defaultLLMs.ts
@@ -29,7 +29,7 @@ export const openAIDefaultLLMs: LLMConfig[] = [
 export const anthropicDefaultLLMs: LLMConfig[] = [
   {
     contextLength: 180000,
-    modelName: 'claude-3-5-sonnet-latest',
+    modelName: 'claude-sonnet-4-20250514',
     apiName: anthropicDefaultAPIName,
   },
   {