chat_models

Chat Models are a variation on language models.

While Chat Models use language models under the hood, the interface they expose is a bit different. Rather than expose a “text in, text out” API, they expose an interface where “chat messages” are the inputs and outputs.

Class hierarchy:

BaseLanguageModel --> BaseChatModel --> <name>  # Examples: ChatOpenAI, ChatGooglePalm

Main helpers:

AIMessage, BaseMessage, HumanMessage

Classes

chat_models.anyscale.ChatAnyscale	Anyscale Chat large language models.
chat_models.azureml_endpoint.AzureMLChatOnlineEndpoint	Azure ML Online Endpoint chat models.
chat_models.azureml_endpoint.CustomOpenAIChatContentFormatter()	Chat Content formatter for models with OpenAI like API scheme.
chat_models.azureml_endpoint.LlamaChatContentFormatter()	Deprecated: Kept for backwards compatibility
chat_models.azureml_endpoint.LlamaContentFormatter()	Content formatter for LLaMA.
chat_models.azureml_endpoint.MistralChatContentFormatter()	Content formatter for Mistral.
chat_models.baichuan.ChatBaichuan	Baichuan chat model integration.
chat_models.baidu_qianfan_endpoint.QianfanChatEndpoint	Baidu Qianfan chat model integration.
chat_models.bedrock.ChatPromptAdapter()	Adapter class to prepare the inputs from Langchain to prompt format that Chat model expects.
chat_models.coze.ChatCoze	ChatCoze chat models API by coze.com
chat_models.dappier.ChatDappierAI	Dappier chat large language models.
chat_models.databricks.ChatDatabricks	Databricks chat models API.
chat_models.deepinfra.ChatDeepInfra	A chat model that uses the DeepInfra API.
chat_models.deepinfra.ChatDeepInfraException	Exception raised when the DeepInfra API returns an error.
chat_models.edenai.ChatEdenAI	EdenAI chat large language models.
chat_models.everlyai.ChatEverlyAI	EverlyAI Chat large language models.
chat_models.fake.FakeListChatModel	Fake ChatModel for testing purposes.
chat_models.fake.FakeMessagesListChatModel	Fake ChatModel for testing purposes.
chat_models.friendli.ChatFriendli	Friendli LLM for chat.
chat_models.gigachat.GigaChat	GigaChat large language models API.
chat_models.google_palm.ChatGooglePalm	Google PaLM Chat models API.
chat_models.google_palm.ChatGooglePalmError	Error with the Google PaLM API.
chat_models.gpt_router.GPTRouter	GPTRouter by Writesonic Inc.
chat_models.gpt_router.GPTRouterException	Error with the GPTRouter APIs
chat_models.gpt_router.GPTRouterModel	GPTRouter model.
chat_models.human.HumanInputChatModel	ChatModel which returns user input as the response.
chat_models.hunyuan.ChatHunyuan	Tencent Hunyuan chat models API by Tencent.
chat_models.javelin_ai_gateway.ChatJavelinAIGateway	Javelin AI Gateway chat models API.
chat_models.javelin_ai_gateway.ChatParams	Parameters for the Javelin AI Gateway LLM.
chat_models.jinachat.JinaChat	Jina AI Chat models API.
chat_models.kinetica.ChatKinetica	Kinetica LLM Chat Model API.
chat_models.kinetica.KineticaSqlOutputParser	Fetch and return data from the Kinetica LLM.
chat_models.kinetica.KineticaSqlResponse	Response containing SQL and the fetched data.
chat_models.kinetica.KineticaUtil()	Kinetica utility functions.
chat_models.konko.ChatKonko	ChatKonko Chat large language models API.
chat_models.litellm.ChatLiteLLM	Chat model that uses the LiteLLM API.
chat_models.litellm.ChatLiteLLMException	Error with the LiteLLM I/O library
chat_models.litellm_router.ChatLiteLLMRouter	LiteLLM Router as LangChain Model.
chat_models.llama_edge.LlamaEdgeChatService	Chat with LLMs via llama-api-server
chat_models.llamacpp.ChatLlamaCpp	llama.cpp model.
chat_models.maritalk.ChatMaritalk	MariTalk Chat models API.
chat_models.maritalk.MaritalkHTTPError(...)	Initialize RequestException with request and response objects.
chat_models.minimax.MiniMaxChat	MiniMax chat model integration.
chat_models.mlflow.ChatMlflow	MLflow chat models API.
chat_models.mlflow_ai_gateway.ChatMLflowAIGateway	MLflow AI Gateway chat models API.
chat_models.mlflow_ai_gateway.ChatParams	Parameters for the MLflow AI Gateway LLM.
chat_models.mlx.ChatMLX	MLX chat models.
chat_models.moonshot.MoonshotChat	Moonshot large language models.
chat_models.oci_generative_ai.ChatOCIGenAI	ChatOCIGenAI chat model integration.
chat_models.oci_generative_ai.CohereProvider()
chat_models.oci_generative_ai.MetaProvider()
chat_models.oci_generative_ai.Provider()
chat_models.octoai.ChatOctoAI	OctoAI Chat large language models.
chat_models.ollama.ChatOllama	Ollama locally runs large language models.
chat_models.pai_eas_endpoint.PaiEasChatEndpoint	Alibaba Cloud PAI-EAS LLM Service chat model API.
chat_models.perplexity.ChatPerplexity	Perplexity AI Chat models API.
chat_models.premai.ChatPremAI	PremAI Chat models.
chat_models.premai.ChatPremAPIError	Error with the PremAI API.
chat_models.promptlayer_openai.PromptLayerChatOpenAI	PromptLayer and OpenAI Chat large language models API.
chat_models.snowflake.ChatSnowflakeCortex	Snowflake Cortex based Chat model
chat_models.snowflake.ChatSnowflakeCortexError	Error with Snowpark client.
chat_models.sparkllm.ChatSparkLLM	IFlyTek Spark chat model integration.
chat_models.symblai_nebula.ChatNebula	Nebula chat large language model - https://docs.symbl.ai/docs/nebula-llm
chat_models.tongyi.ChatTongyi	Alibaba Tongyi Qwen chat model integration.
chat_models.volcengine_maas.VolcEngineMaasChat	Volc Engine Maas hosts a plethora of models.
chat_models.yandex.ChatYandexGPT	YandexGPT large language models.
chat_models.yi.ChatYi	Yi chat models API.
chat_models.yuan2.ChatYuan2	Yuan2.0 Chat models API.
chat_models.zhipuai.ChatZhipuAI	ZhipuAI chat model integration.

Functions

chat_models.anthropic.convert_messages_to_prompt_anthropic(...)	Format a list of messages into a full prompt for the Anthropic model
chat_models.baichuan.aconnect_httpx_sse(...)	Async context manager for connecting to an SSE stream.
chat_models.baidu_qianfan_endpoint.convert_message_to_dict(message)	Convert a message to a dictionary that can be passed to the API.
chat_models.bedrock.convert_messages_to_prompt_mistral(...)	Convert a list of messages to a prompt for mistral.
chat_models.cohere.get_cohere_chat_request(...)	Get the request for the Cohere chat API.
chat_models.cohere.get_role(message)	Get the role of the message.
chat_models.fireworks.acompletion_with_retry(...)	Use tenacity to retry the async completion call.
chat_models.fireworks.acompletion_with_retry_streaming(...)	Use tenacity to retry the completion call for streaming.
chat_models.fireworks.completion_with_retry(...)	Use tenacity to retry the completion call.
chat_models.fireworks.conditional_decorator(...)	Define conditional decorator.
chat_models.fireworks.convert_dict_to_message(_dict)	Convert a dict response to a message.
chat_models.friendli.get_chat_request(messages)	Get a request of the Friendli chat API.
chat_models.friendli.get_role(message)	Get role of the message.
chat_models.google_palm.achat_with_retry(...)	Use tenacity to retry the async completion call.
chat_models.google_palm.chat_with_retry(llm, ...)	Use tenacity to retry the completion call.
chat_models.gpt_router.acompletion_with_retry(...)	Use tenacity to retry the async completion call.
chat_models.gpt_router.completion_with_retry(...)	Use tenacity to retry the completion call.
chat_models.gpt_router.get_ordered_generation_requests(...)	Return the body for the model router input.
chat_models.jinachat.acompletion_with_retry(...)	Use tenacity to retry the async completion call.
chat_models.litellm.acompletion_with_retry(llm)	Use tenacity to retry the async completion call.
chat_models.litellm_router.get_llm_output(...)	Get llm output from usage and params.
chat_models.meta.convert_messages_to_prompt_llama(...)	Convert a list of messages to a prompt for llama.
chat_models.minimax.aconnect_httpx_sse(...)	Async context manager for connecting to an SSE stream.
chat_models.minimax.connect_httpx_sse(...)	Context manager for connecting to an SSE stream.
chat_models.openai.acompletion_with_retry(llm)	Use tenacity to retry the async completion call.
chat_models.premai.chat_with_retry(llm, ...)	Using tenacity for retry in completion call
chat_models.premai.create_prem_retry_decorator(llm, *)	Create a retry decorator for PremAI API errors.
chat_models.sparkllm.convert_dict_to_message(_dict)
chat_models.sparkllm.convert_message_to_dict(message)
chat_models.tongyi.convert_dict_to_message(_dict)	Convert a dict to a message.
chat_models.tongyi.convert_message_chunk_to_message(...)	Convert a message chunk to a message.
chat_models.tongyi.convert_message_to_dict(message)	Convert a message to a dict.
chat_models.volcengine_maas.convert_dict_to_message(_dict)	Convert a dict to a message.
chat_models.yandex.acompletion_with_retry(...)	Use tenacity to retry the async completion call.
chat_models.yandex.completion_with_retry(...)	Use tenacity to retry the completion call.
chat_models.yi.aconnect_httpx_sse(client, ...)
chat_models.yuan2.acompletion_with_retry(...)	Use tenacity to retry the async completion call.
chat_models.zhipuai.aconnect_sse(client, ...)	Async context manager for connecting to an SSE stream.
chat_models.zhipuai.connect_sse(client, ...)	Context manager for connecting to an SSE stream.

Deprecated classes

chat_models.anthropic.ChatAnthropic	Deprecated since version 0.0.28: Use langchain_anthropic.ChatAnthropic instead.
chat_models.azure_openai.AzureChatOpenAI	Deprecated since version 0.0.10: Use langchain_openai.AzureChatOpenAI instead.
chat_models.bedrock.BedrockChat	Deprecated since version 0.0.34: Use langchain_aws.ChatBedrock instead.
chat_models.cohere.ChatCohere	Deprecated since version 0.0.30: Use langchain_cohere.ChatCohere instead.
chat_models.ernie.ErnieBotChat	Deprecated since version 0.0.13: Use langchain_community.chat_models.QianfanChatEndpoint instead.
chat_models.fireworks.ChatFireworks	Deprecated since version 0.0.26: Use langchain_fireworks.ChatFireworks instead.
chat_models.huggingface.ChatHuggingFace	Deprecated since version 0.0.37: Use langchain_huggingface.ChatHuggingFace instead.
chat_models.openai.ChatOpenAI	Deprecated since version 0.0.10: Use langchain_openai.ChatOpenAI instead.
chat_models.solar.SolarChat	Deprecated since version 0.0.34: Use langchain_upstage.ChatUpstage instead.
chat_models.vertexai.ChatVertexAI	Deprecated since version 0.0.12: Use langchain_google_vertexai.ChatVertexAI instead.