From e0950f29b7f6fbb855e0be6e31d232ecd3dd0024 Mon Sep 17 00:00:00 2001
From: ccurme <chester.curme@gmail.com>
Date: Wed, 17 Dec 2025 12:44:12 -0500
Subject: [PATCH] fix(openai): rely on langchain-core for setting
 chunk_position (#34404)

---
 libs/partners/deepseek/uv.lock                            | 6 +++---
 libs/partners/openai/langchain_openai/chat_models/base.py | 2 --
 libs/partners/xai/uv.lock                                 | 6 +++---
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/libs/partners/deepseek/uv.lock b/libs/partners/deepseek/uv.lock
index c6c20fc6b7a..c2e0f10844a 100644
--- a/libs/partners/deepseek/uv.lock
+++ b/libs/partners/deepseek/uv.lock
@@ -370,7 +370,7 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.1.1"
+version = "1.2.2"
 source = { editable = "../../core" }
 dependencies = [
     { name = "jsonpatch" },
@@ -477,7 +477,7 @@ typing = [{ name = "mypy", specifier = ">=1.10.0,<2.0.0" }]
 
 [[package]]
 name = "langchain-openai"
-version = "1.1.0"
+version = "1.1.4"
 source = { editable = "../openai" }
 dependencies = [
     { name = "langchain-core" },
@@ -527,7 +527,7 @@ typing = [
 
 [[package]]
 name = "langchain-tests"
-version = "1.0.2"
+version = "1.1.1"
 source = { editable = "../../standard-tests" }
 dependencies = [
     { name = "httpx" },
diff --git a/libs/partners/openai/langchain_openai/chat_models/base.py b/libs/partners/openai/langchain_openai/chat_models/base.py
index ce0564f4c81..615dbc9f77d 100644
--- a/libs/partners/openai/langchain_openai/chat_models/base.py
+++ b/libs/partners/openai/langchain_openai/chat_models/base.py
@@ -1107,8 +1107,6 @@ class BaseChatOpenAI(BaseChatModel):
                 generation_info["system_fingerprint"] = system_fingerprint
             if service_tier := chunk.get("service_tier"):
                 generation_info["service_tier"] = service_tier
-            if isinstance(message_chunk, AIMessageChunk):
-                message_chunk.chunk_position = "last"
 
         logprobs = choice.get("logprobs")
         if logprobs:
diff --git a/libs/partners/xai/uv.lock b/libs/partners/xai/uv.lock
index 3d555518f02..5e0386f3c10 100644
--- a/libs/partners/xai/uv.lock
+++ b/libs/partners/xai/uv.lock
@@ -621,7 +621,7 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.1.1"
+version = "1.2.2"
 source = { editable = "../../core" }
 dependencies = [
     { name = "jsonpatch" },
@@ -681,7 +681,7 @@ typing = [
 
 [[package]]
 name = "langchain-openai"
-version = "1.1.0"
+version = "1.1.4"
 source = { editable = "../openai" }
 dependencies = [
     { name = "langchain-core" },
@@ -731,7 +731,7 @@ typing = [
 
 [[package]]
 name = "langchain-tests"
-version = "1.0.2"
+version = "1.1.1"
 source = { editable = "../../standard-tests" }
 dependencies = [
     { name = "httpx" },