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LangGraph · Concept

previous

previous is the prior return value for a thread in the LangGraph Functional API. It is available only when a checkpointer is provided.

Last updated

Since
v1.2

Syntax

previous: Any = field(default=None)

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • Functional API
  • checkpointer
  • thread

Source: previous | langgraph | LangChain Reference. Checked 2026-11-03.