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Cursor IDE

Cursor · IDE

Cursor IDE

September 22, 2026 at 6:09 AM UTC

Patch release 3.21.18 on the latest channel: agent prompt refreshes and local agent reasoning-replay support, with stable still on 3.21.16.

Changelog

  • [changed] Agent system prompts were refreshed (CLI, persona-based assistants, and Composer-powered pair-programming flows), including updated wiring for how those prompts are composed.
  • [new] Local agent reasoning replay is available via CURSOR_LOCAL_AGENT_REASONING_REPLAY for replaying local agent reasoning.

Availability

3.21.18 is on latest for all desktop targets: macOS (arm64, x64), Linux (arm64, x64), and Windows (arm64, x64). Stable remains on 3.21.16.

Older release← Sep 19, 22:05 UTCNewer release→ Sep 22, 22:26 UTC
All Cursor IDE releases →