diff --git a/libs/core/langchain_core/language_models/chat_models.py b/libs/core/langchain_core/language_models/chat_models.py
index f24c52e431..ddebd30975 100644
--- a/libs/core/langchain_core/language_models/chat_models.py
+++ b/libs/core/langchain_core/language_models/chat_models.py
@@ -222,7 +222,6 @@ class BaseChatModel(BaseLanguageModel[BaseMessage], ABC):
                 options=options,
                 name=config.get("run_name"),
                 run_id=config.pop("run_id", None),
-                batch_size=1,
             )
             generation: Optional[ChatGenerationChunk] = None
             try:
@@ -289,7 +288,6 @@ class BaseChatModel(BaseLanguageModel[BaseMessage], ABC):
             options=options,
             name=config.get("run_name"),
             run_id=config.pop("run_id", None),
-            batch_size=1,
         )
 
         generation: Optional[ChatGenerationChunk] = None
@@ -402,7 +400,6 @@ class BaseChatModel(BaseLanguageModel[BaseMessage], ABC):
             options=options,
             name=run_name,
             run_id=run_id,
-            batch_size=len(messages),
         )
         results = []
         for i, m in enumerate(messages):
@@ -489,7 +486,6 @@ class BaseChatModel(BaseLanguageModel[BaseMessage], ABC):
             invocation_params=params,
             options=options,
             name=run_name,
-            batch_size=len(messages),
             run_id=run_id,
         )
 
diff --git a/libs/core/langchain_core/language_models/llms.py b/libs/core/langchain_core/language_models/llms.py
index e307e8035c..f606e98bcf 100644
--- a/libs/core/langchain_core/language_models/llms.py
+++ b/libs/core/langchain_core/language_models/llms.py
@@ -435,7 +435,6 @@ class BaseLLM(BaseLanguageModel[str], ABC):
                 options=options,
                 name=config.get("run_name"),
                 run_id=config.pop("run_id", None),
-                batch_size=1,
             )
             generation: Optional[GenerationChunk] = None
             try:
@@ -496,7 +495,6 @@ class BaseLLM(BaseLanguageModel[str], ABC):
             options=options,
             name=config.get("run_name"),
             run_id=config.pop("run_id", None),
-            batch_size=1,
         )
         generation: Optional[GenerationChunk] = None
         try:
@@ -793,7 +791,6 @@ class BaseLLM(BaseLanguageModel[str], ABC):
                     invocation_params=params,
                     options=options,
                     name=run_name,
-                    batch_size=len(prompts),
                     run_id=run_id_,
                 )[0]
                 for callback_manager, prompt, run_name, run_id_ in zip(
@@ -812,7 +809,6 @@ class BaseLLM(BaseLanguageModel[str], ABC):
                     invocation_params=params,
                     options=options,
                     name=run_name_list[idx],
-                    batch_size=len(missing_prompts),
                 )[0]
                 for idx in missing_prompt_idxs
             ]
@@ -1006,7 +1002,6 @@ class BaseLLM(BaseLanguageModel[str], ABC):
                         invocation_params=params,
                         options=options,
                         name=run_name,
-                        batch_size=len(prompts),
                         run_id=run_id_,
                     )
                     for callback_manager, prompt, run_name, run_id_ in zip(
@@ -1032,7 +1027,6 @@ class BaseLLM(BaseLanguageModel[str], ABC):
                         invocation_params=params,
                         options=options,
                         name=run_name_list[idx],
-                        batch_size=len(missing_prompts),
                     )
                     for idx in missing_prompt_idxs
                 ]