ReAct pattern

Concept

An agent reasoning pattern that alternates between reasoning about what is needed and acting, for example retrieving data or calling a tool, until the model decides it has enough to answer.

Title graphic: ReAct pattern (Concept)

Type	Concept

Key points about ReAct pattern

In Agentic RAG the model takes part in deciding what information is needed and how to obtain it, following the ReAct pattern of Reason, Act, Reason, Act. · The Copilot Assumption That's Holding You Back…

Episodes about ReAct pattern

The Copilot Assumption That's Holding You Back — Agentic…

2026-08-11 · Video on YouTube

Many teams still treat Copilot as a search box and blame the tool when answers come back incomplete. This episode explains agentic RAG, the orchestration loop behind modern Copilot, for IT decision makers and Microsoft 365 architects. You learn when agentic…

Articles about ReAct pattern (1)

Cost and Latency Trade-Offs in Agentic RAG vs Traditional Retrieval
2026-08-11 · Mirko Peters
Discover why Agentic RAG is 2-10x more expensive and slower than traditional RAG, and learn how to choose the right architecture for your enterprise AI.

Frequently asked questions

What is the ReAct pattern?

Reason, Act, Reason, Act: the system analyzes a problem, performs a retrieval or tool call, evaluates the result and decides whether another action is needed, creating an iterative, self-correcting process. · From the episode: The Copilot Assumption That's Holding You Back…

Glossary

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Sources

Feed for this topic (RSS): entity/react-pattern/feed.xml
M365.FM episodes on this topic: 1
Articles on this topic: 1

Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-03