diff --git a/libs/community/langchain_community/llms/openai.py b/libs/community/langchain_community/llms/openai.py
index 973b92eb5ae..0d891c299f1 100644
--- a/libs/community/langchain_community/llms/openai.py
+++ b/libs/community/langchain_community/llms/openai.py
@@ -661,6 +661,8 @@ class BaseOpenAI(BaseLLM):
                 max_tokens = openai.modelname_to_contextsize("gpt-3.5-turbo-instruct")
         """
         model_token_mapping = {
+            "gpt-4o": 128_000,
+            "gpt-4o-2024-05-13": 128_000,
             "gpt-4": 8192,
             "gpt-4-0314": 8192,
             "gpt-4-0613": 8192,
diff --git a/libs/partners/openai/langchain_openai/llms/base.py b/libs/partners/openai/langchain_openai/llms/base.py
index 3b557e78036..d156fcc6023 100644
--- a/libs/partners/openai/langchain_openai/llms/base.py
+++ b/libs/partners/openai/langchain_openai/llms/base.py
@@ -537,6 +537,8 @@ class BaseOpenAI(BaseLLM):
                 max_tokens = openai.modelname_to_contextsize("gpt-3.5-turbo-instruct")
         """
         model_token_mapping = {
+            "gpt-4o": 128_000,
+            "gpt-4o-2024-05-13": 128_000,
             "gpt-4": 8192,
             "gpt-4-0314": 8192,
             "gpt-4-0613": 8192,