OpenAIapi
October 30, 2026·Source

Auto Review and Async Compaction in the Agents API

A batch of updates to OpenAI's Agents API that checks commands before they run and speeds up sessions, for developers building agents on it.

  • Auto Review evaluates commands for potential bad behavior before they execute, the same approach used in Codex.
  • Async Compaction lets session history get condensed in the background, which speeds up sessions.
  • Time awareness is an experimental feature that gives the model a sense of time passing, so it handles requests like "timebox CI fixes to 10 minutes" better.
  • A session's tools can now be updated at any time.
  • System prompts are now automatically cached across all sessions, which saves money and time.

Best for

Agents that run commands on their own or hold long working sessions.

When to use it

Your agent runs commands you'd want checked first, or its sessions slow down as history gets condensed.

Who benefits

Developers maintaining agents on the Agents API.

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