Chat models

Features (natively supported)

All ChatModels implement the Runnable interface, which comes with default implementations of all methods, ie. ainvoke, batch, abatch, stream, astream. This gives all ChatModels basic support for async, streaming and batch, which by default is implemented as below:

• Async support defaults to calling the respective sync method in asyncio's default thread pool executor. This lets other async functions in your application make progress while the ChatModel is being executed, by moving this call to a background thread.
• Streaming support defaults to returning an Iterator (or AsyncIterator in the case of async streaming) of a single value, the final result returned by the underlying ChatModel provider. This obviously doesn't give you token-by-token streaming, which requires native support from the ChatModel provider, but ensures your code that expects an iterator of tokens can work for any of our ChatModel integrations.
• Batch support defaults to calling the underlying ChatModel in parallel for each input by making use of a thread pool executor (in the sync batch case) or asyncio.gather (in the async batch case). The concurrency can be controlled with the max_concurrency key in RunnableConfig.

Each ChatModel integration can optionally provide native implementations to truly enable async or streaming. The table shows, for each integration, which features have been implemented with native support.

Model	Invoke	Async invoke	Stream	Async stream	Tool calling	Structured output	Python Package
AzureChatOpenAI	✅	❌	❌	❌	✅	✅	langchain-openai
BedrockChat	✅	❌	✅	❌	❌	❌	langchain-community
ChatAnthropic	✅	❌	❌	❌	✅	✅	langchain-anthropic
ChatAnyscale	✅	✅	✅	✅	❌	❌	langchain-community
ChatBaichuan	✅	❌	✅	❌	❌	❌	langchain-community
ChatCohere	✅	❌	❌	❌	✅	✅	langchain-cohere
ChatCoze	✅	❌	✅	❌	❌	❌	langchain-community
ChatDatabricks	✅	❌	✅	❌	❌	❌	langchain-community
ChatDeepInfra	✅	✅	✅	✅	❌	❌	langchain-community
ChatEverlyAI	✅	✅	✅	✅	❌	❌	langchain-community
ChatFireworks	✅	❌	❌	❌	✅	✅	langchain-fireworks
ChatFriendli	✅	✅	✅	✅	❌	❌	langchain-community
ChatGooglePalm	✅	✅	❌	❌	❌	❌	langchain-community
ChatGroq	✅	❌	❌	❌	✅	✅	langchain-groq
ChatHuggingFace	✅	✅	✅	✅	❌	❌	langchain-community
ChatHunyuan	✅	❌	✅	❌	❌	❌	langchain-community
ChatJavelinAIGateway	✅	✅	❌	❌	❌	❌	langchain-community
ChatKinetica	✅	❌	❌	❌	❌	❌	langchain-community
ChatKonko	✅	❌	❌	❌	❌	❌	langchain-community
ChatLiteLLM	✅	✅	✅	✅	❌	❌	langchain-community
ChatLiteLLMRouter	✅	✅	✅	✅	❌	❌	langchain-community
ChatMLX	✅	✅	✅	❌	❌	❌	langchain-community
ChatMLflowAIGateway	✅	❌	❌	❌	❌	❌	langchain-community
ChatMaritalk	✅	✅	✅	✅	❌	❌	langchain-community
ChatMistralAI	✅	❌	❌	❌	✅	✅	langchain-mistralai
ChatMlflow	✅	❌	✅	❌	❌	❌	langchain-community
ChatOctoAI	✅	✅	✅	✅	❌	❌	langchain-community
ChatOllama	✅	✅	✅	✅	❌	❌	langchain-community
ChatOpenAI	✅	❌	❌	❌	✅	✅	langchain-openai
ChatPerplexity	✅	❌	✅	❌	❌	❌	langchain-community
ChatPremAI	✅	❌	✅	❌	❌	❌	langchain-community
ChatSparkLLM	✅	❌	✅	❌	❌	❌	langchain-community
ChatTongyi	✅	✅	✅	✅	❌	❌	langchain-community
ChatVertexAI	✅	❌	❌	❌	✅	✅	langchain-google-vertexai
ChatYandexGPT	✅	✅	❌	❌	❌	❌	langchain-community
ChatYuan2	✅	✅	✅	✅	❌	❌	langchain-community
ChatZhipuAI	✅	✅	✅	✅	❌	❌	langchain-community
ErnieBotChat	✅	❌	❌	❌	❌	❌	langchain-community
GPTRouter	✅	✅	✅	✅	❌	❌	langchain-community
GigaChat	✅	✅	✅	✅	❌	❌	langchain-community
JinaChat	✅	✅	✅	✅	❌	❌	langchain-community
LlamaEdgeChatService	✅	❌	✅	❌	❌	❌	langchain-community
MiniMaxChat	✅	✅	❌	❌	❌	❌	langchain-community
PaiEasChatEndpoint	✅	❌	❌	✅	❌	❌	langchain-community
PromptLayerChatOpenAI	✅	❌	❌	❌	❌	❌	langchain-community
QianfanChatEndpoint	✅	✅	✅	✅	❌	❌	langchain-community
SolarChat	✅	✅	✅	✅	❌	❌	langchain-community
VolcEngineMaasChat	✅	❌	✅	❌	❌	❌	langchain-community