Meet Reason, the world’s most effective agent.

Reason helps you maximize your AI usage for minimal spend.

Reason’s Agents view: sessions in the sidebar, a finished session in the middle, and its progress on the right

Loved by 20,000+ engineers at

  • Databricks
  • Zoom
  • Docker
  • Framer
  • ByteDance
  • PlanetScale
  • Razorpay
  • Indy
  • Boardy
  • Superdesign

How to use Reason.

API

Start a session from a script, a CI job or your own product. Poll it, stream it, read the result.

Read the API docs →

App

Your teammates and your agents in one app. Give a Reason a name and a team, and run Claude Code, Codex and Cursor beside it.

Download the app →

Slack

Mention @Reason in a thread. It replies with the pull request, the deck or the answer when it’s done.

Add to Slack →

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