AI Glossary

ReAct

Also called Reason + Act

What does “ReAct” mean?

ReAct: Prompting pattern from 2022 research in which a model alternates between writing out its reasoning and taking an action, then observes the result before reasoning again. Many modern agent loops descend from this idea.

ReAct visual guide: Prompting pattern from 2022 research in which a model alternates between writing out its reasoning and taking an action, then observes the result before reasoning again. Many modern agent loops descend from this idea.
Visual guide Open full size (new tab)

What is an example of “ReAct”?

A ReAct-style agent might note it needs a population figure, search for it, read the result and then do the calculation.