Chat models

info

If you'd like to write your own chat model, see this how-to. If you'd like to contribute an integration, see Contributing integrations.

Advanced features

The following table shows all the chat model classes that support one or more advanced features.

info

While all these LangChain classes support the indicated advanced feature, you may have to open the provider-specific documentation to learn which hosted models or backends support the feature.

Model	Tool calling	Structured output	JSON mode	Local	Multimodal	Package
AzureChatOpenAI	✅	✅	✅	❌	✅	langchain-openai
ChatAI21	✅	✅	❌	❌	❌	langchain-ai21
ChatAnthropic	✅	✅	❌	❌	✅	langchain-anthropic
ChatBedrock	✅	✅	❌	❌	❌	langchain-aws
ChatCohere	✅	✅	❌	❌	❌	langchain-cohere
ChatFireworks	✅	✅	✅	❌	❌	langchain-fireworks
ChatGoogleGenerativeAI	✅	✅	❌	❌	✅	langchain-google-genai
ChatGroq	✅	✅	✅	❌	❌	langchain-groq
ChatHuggingFace	✅	✅	❌	✅	❌	langchain-huggingface
ChatLlamaCpp	✅	✅	❌	✅	❌	langchain-community
ChatMistralAI	✅	✅	❌	❌	❌	langchain-mistralai
ChatNVIDIA	✅	✅	❌	✅	❌	langchain-nvidia-ai-endpoints
ChatOllama	✅	✅	✅	✅	❌	langchain-ollama
ChatOpenAI	✅	✅	✅	❌	✅	langchain-openai
ChatTogether	✅	✅	✅	❌	❌	langchain-together
ChatUpstage	✅	✅	❌	❌	❌	langchain-upstage
ChatVertexAI	✅	✅	❌	❌	✅	langchain-google-vertexai
ChatWatsonx	✅	✅	❌	❌	❌	langchain-ibm
vLLM Chat (via ChatOpenAI)	❌	❌	❌	✅	❌	langchain-openai