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Agents Beginner Also known as: Reasoning and Acting · Ragionamento e Azione

ReAct

/ree-act/

A pattern where an agent alternates textual reasoning steps (Thought) with concrete actions (Action) on tools, observing the result before the next step.

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In practice

It is the backbone of most modern LLM agents: the model writes what it intends to do, calls a tool, reads the response, then decides the next step. It makes the agent's decisions inspectable and debuggable.

Related terms

Agent Tool use Chain-of-thought

Seen in the wild

2 entries mentioning it
  1. Reflexion: agents that learn from mistakes without gradient updates
    High
  2. ReAct: the framework that unites reasoning and acting in LLMs
    Landmark
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