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JavaScript@langchain/corecallbacksbaseBaseCallbackHandlerhandleLLMNewToken
Methodā—Since v1.0

handleLLMNewToken

Called when an LLM/ChatModel in streaming mode produces a new token

Copy
handleLLMNewToken(
  token: string,
  idx: NewTokenIndices,
  runId: string,
  parentRunId: string,
  tags: string[],
  fields: HandleLLMNewTokenCallbackFields
): any

Parameters

NameTypeDescription
token*string
idx*NewTokenIndices

idx.prompt is the index of the prompt that produced the token (if there are multiple prompts) idx.completion is the index of the completion that produced the token (if multiple completions per prompt are requested)

runId*string
parentRunIdstring
tagsstring[]
fieldsHandleLLMNewTokenCallbackFields
View source on GitHub