diff --git a/.changeset/calm-guests-pump.md b/.changeset/calm-guests-pump.md
new file mode 100644
index 00000000000..da46e234f77
--- /dev/null
+++ b/.changeset/calm-guests-pump.md
@@ -0,0 +1,5 @@
+---
+'@firebase/ai': patch
+---
+
+Fixed an issue where `AIError` messages were too long after including an entire response body.
diff --git a/packages/ai/src/requests/response-helpers.ts b/packages/ai/src/requests/response-helpers.ts
index 2505b5c9276..fec9b371512 100644
--- a/packages/ai/src/requests/response-helpers.ts
+++ b/packages/ai/src/requests/response-helpers.ts
@@ -299,9 +299,9 @@ export async function handlePredictResponse<
     } else {
       throw new AIError(
         AIErrorCode.RESPONSE_ERROR,
-        `Predictions array in response has missing properties. Response: ${JSON.stringify(
-          responseJson
-        )}`
+        `Unexpected element in 'predictions' array in response: '${JSON.stringify(
+          prediction
+        )}'`
       );
     }
   }