diff --git a/packages/langchain_openai/lib/src/chat_models/mappers.dart b/packages/langchain_openai/lib/src/chat_models/mappers.dart
index a2ea96f4..3b23ee8c 100644
--- a/packages/langchain_openai/lib/src/chat_models/mappers.dart
+++ b/packages/langchain_openai/lib/src/chat_models/mappers.dart
@@ -209,6 +209,7 @@ extension CreateChatCompletionResponseMapper on CreateChatCompletionResponse {
         'model': model,
         'created': created,
         'system_fingerprint': systemFingerprint,
+        'logprobs': choice.logprobs?.toMap(),
       },
       usage: _mapUsage(usage),
     );