llm_result

A single chat generation output.

A subclass of Generation that represents the response from a chat model that generates chat messages.

The message attribute is a structured representation of the chat message. Most of the time, the message will be of type AIMessage.

Users working with chat models will usually access information via either AIMessage (returned from runnable interfaces) or LLMResult (available via callbacks).

ChatGeneration chunk.

ChatGeneration chunks can be concatenated with other ChatGeneration chunks.

A single text generation output.

Generation represents the response from an "old-fashioned" LLM (string-in, string-out) that generates regular text (not chat messages).

This model is used internally by chat model and will eventually be mapped to a more general LLMResult object, and then projected into an AIMessage object.

LangChain users working with chat models will usually access information via AIMessage (returned from runnable interfaces) or LLMResult (available via callbacks). Please refer to AIMessage and LLMResult for more information.

GenerationChunk, which can be concatenated with other Generation chunks.

Class that contains metadata for a single execution of a chain or model.

Defined for backwards compatibility with older versions of langchain_core.

Users can acquire the run_id information from callbacks or via run_id information present in the astream_event API (depending on the use case).

A container for results of an LLM call.

Both chat models and LLMs generate an LLMResult object. This object contains the generated outputs and any additional information that the model provider wants to return.