diff --git a/packages/backend/src/ai/llm/client/mod.rs b/packages/backend/src/ai/llm/client/mod.rs
index 7140b1abf..0118a32fc 100644
--- a/packages/backend/src/ai/llm/client/mod.rs
+++ b/packages/backend/src/ai/llm/client/mod.rs
@@ -511,8 +511,8 @@ impl Model {
             Self::GPT4o => "gpt-4o",
             Self::GPT4oMini => "gpt-4o-mini",
             Self::O3Mini => "o3-mini",
-            Self::Claude45Sonnet => "claude-4-5-sonnet-latest",
-            Self::Claude4Sonnet => "claude-4-sonnet-latest",
+            Self::Claude45Sonnet => "claude-sonnet-4-5-20250929",
+            Self::Claude4Sonnet => "claude-sonnet-4-20250514",
             Self::Claude37Sonnet => "claude-3-7-sonnet-latest",
             Self::Claude35Sonnet => "claude-3-5-sonnet-latest",
             Self::Claude35Haiku => "claude-3-5-haiku-latest",
diff --git a/packages/services/src/lib/ai/helpers.ts b/packages/services/src/lib/ai/helpers.ts
index b1bb8e5a4..0c0e03cc4 100644
--- a/packages/services/src/lib/ai/helpers.ts
+++ b/packages/services/src/lib/ai/helpers.ts
@@ -294,7 +294,7 @@ export const parseAIError = (e: any) => {
     content =
       'Unauthorized, please check your API key and make sure you have right access permissions.'
   } else {
-    content = 'Encountered an unexpected error: ' + e?.message || String(e)
+    content = 'Encountered an unexpected error: ' + (e?.message || String(e))
   }
   if (typeof e === 'string' && e.toLowerCase().includes('Content is too long'.toLowerCase())) {
     content = 'The content is too long to process. Please try a more specific question.'