diff --git a/utils/server/index.ts b/utils/server/index.ts
index fc7e39f..4bc5f30 100644
--- a/utils/server/index.ts
+++ b/utils/server/index.ts
@@ -34,14 +34,15 @@ export const OpenAIStream = async (
     }),
   });
 
-  if (res.status !== 200) {
-    const statusText = res.statusText;
-    throw new Error(`OpenAI API returned an error: ${statusText}`);
-  }
-
   const encoder = new TextEncoder();
   const decoder = new TextDecoder();
 
+  if (res.status !== 200) {
+    const statusText = res.statusText;
+    const result = await res.body?.getReader().read();
+    throw new Error(`OpenAI API returned an error: ${decoder.decode(result?.value) || statusText}`);
+  }
+
   const stream = new ReadableStream({
     async start(controller) {
       const onParse = (event: ParsedEvent | ReconnectInterval) => {