From d31b5eb2dfe9445f58bc4fa59f3bfff28963f6db Mon Sep 17 00:00:00 2001
From: anadi45 <ranjeetbaraik15@gmail.com>
Date: Thu, 19 Dec 2024 01:26:00 +0530
Subject: [PATCH 1/2] fix: include model_name in response_metadata

---
 libs/langchain-openai/src/chat_models.ts | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/libs/langchain-openai/src/chat_models.ts b/libs/langchain-openai/src/chat_models.ts
index 4a0d438f0ba5..dc6fe0c9b83a 100644
--- a/libs/langchain-openai/src/chat_models.ts
+++ b/libs/langchain-openai/src/chat_models.ts
@@ -167,13 +167,15 @@ function openAIResponseToChatMessage(
       if (includeRawResponse !== undefined) {
         additional_kwargs.__raw_response = rawResponse;
       }
-      let response_metadata: Record<string, unknown> | undefined;
-      if (rawResponse.system_fingerprint) {
-        response_metadata = {
-          usage: { ...rawResponse.usage },
-          system_fingerprint: rawResponse.system_fingerprint,
-        };
-      }
+      const response_metadata: Record<string, unknown> | undefined = {
+        model_name: rawResponse.model,
+        ...AIMessage(
+          rawResponse.system_fingerprint && {
+            usage: { ...rawResponse.usage },
+            system_fingerprint: rawResponse.system_fingerprint,
+          }
+        ),
+      };
 
       if (message.audio) {
         additional_kwargs.audio = message.audio;
@@ -1414,6 +1416,7 @@ export class ChatOpenAI<
         // Only include system fingerprint in the last chunk for now
         // to avoid concatenation issues
         generationInfo.system_fingerprint = data.system_fingerprint;
+        generationInfo.model_name = data.model;
       }
       if (this.logprobs) {
         generationInfo.logprobs = choice.logprobs;

From 867a1b7c5d4f66df5b1ea1dbfa61acbd3291d506 Mon Sep 17 00:00:00 2001
From: anadi45 <ranjeetbaraik15@gmail.com>
Date: Thu, 19 Dec 2024 01:53:40 +0530
Subject: [PATCH 2/2] fix: AIMessage typo

---
 libs/langchain-openai/src/chat_models.ts | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/libs/langchain-openai/src/chat_models.ts b/libs/langchain-openai/src/chat_models.ts
index dc6fe0c9b83a..7fd7f7da8809 100644
--- a/libs/langchain-openai/src/chat_models.ts
+++ b/libs/langchain-openai/src/chat_models.ts
@@ -169,12 +169,12 @@ function openAIResponseToChatMessage(
       }
       const response_metadata: Record<string, unknown> | undefined = {
         model_name: rawResponse.model,
-        ...AIMessage(
-          rawResponse.system_fingerprint && {
-            usage: { ...rawResponse.usage },
-            system_fingerprint: rawResponse.system_fingerprint,
-          }
-        ),
+        ...(rawResponse.system_fingerprint
+          ? {
+              usage: { ...rawResponse.usage },
+              system_fingerprint: rawResponse.system_fingerprint,
+            }
+          : {}),
       };
 
       if (message.audio) {