Function●Since v1.0

create_reasoning_block

Create a ReasoningContentBlock.

create_reasoning_block(
  reasoning: str | None = None,
  id: str | None = None,
  index: int | str | None = None,
  **kwargs: Any = {}
) -> ReasoningContentBlock

The id is generated automatically if not provided, using a UUID4 format prefixed with 'lc_' to indicate it is a LangChain-generated ID.

Parameters

Name	Type	Description
`reasoning`	`str \| None`	Default:`None` The reasoning text or thought summary.
`id`	`str \| None`	Default:`None` Content block identifier. Generated automatically if not provided.
`index`	`int \| str \| None`	Default:`None` Index of block in aggregate response. Used during streaming.

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create_reasoning_block

Parameters

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create_reasoning_block

Parameters