types.ContentThinkingDelta

types.ContentThinkingDelta()

A streaming fragment of thinking/reasoning content.

Emitted during streaming to represent a chunk of the model’s thinking. The phase attribute communicates block boundaries to downstream consumers.

Parameters

Name	Type	Description	Default
thinking		The thinking/reasoning text fragment.	required
phase		The phase of the thinking delta: "start", "body", or "end".	required