From 4f400be31d782605a1839eaa3700c812170ba0df Mon Sep 17 00:00:00 2001
From: Mason Daugherty <mason@langchain.dev>
Date: Wed, 11 Mar 2026 22:09:33 -0400
Subject: [PATCH] chore(langchain): add baseten to `_BUILTIN_PROVIDERS`
 (#35777)

---
 libs/langchain_v1/langchain/chat_models/base.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libs/langchain_v1/langchain/chat_models/base.py b/libs/langchain_v1/langchain/chat_models/base.py
index b989f90bfb6..0b4130c4694 100644
--- a/libs/langchain_v1/langchain/chat_models/base.py
+++ b/libs/langchain_v1/langchain/chat_models/base.py
@@ -40,6 +40,7 @@ _BUILTIN_PROVIDERS: dict[str, tuple[str, str, Callable[..., BaseChatModel]]] = {
     "anthropic_bedrock": ("langchain_aws", "ChatAnthropicBedrock", _call),
     "azure_ai": ("langchain_azure_ai.chat_models", "AzureAIChatCompletionsModel", _call),
     "azure_openai": ("langchain_openai", "AzureChatOpenAI", _call),
+    "baseten": ("langchain_baseten", "ChatBaseten", _call),
     "bedrock": ("langchain_aws", "ChatBedrock", _call),
     "bedrock_converse": ("langchain_aws", "ChatBedrockConverse", _call),
     "cohere": ("langchain_cohere", "ChatCohere", _call),
@@ -63,6 +64,7 @@ _BUILTIN_PROVIDERS: dict[str, tuple[str, str, Callable[..., BaseChatModel]]] = {
         "ChatWatsonx",
         lambda cls, model, **kwargs: cls(model_id=model, **kwargs),
     ),
+    "litellm": ("langchain_litellm", "ChatLiteLLM", _call),
     "mistralai": ("langchain_mistralai", "ChatMistralAI", _call),
     "nvidia": ("langchain_nvidia_ai_endpoints", "ChatNVIDIA", _call),
     "ollama": ("langchain_ollama", "ChatOllama", _call),