Agents API ships safer, faster sessions

This is a meaningful infrastructure update: OpenAI is improving the agent runtime’s operational fundamentals instead of merely adding another model surface.

• –Auto-review brings Codex-style command safety into managed agent sessions.
• –Async compaction keeps long workflows moving, though background compaction may increase token usage.
• –Time awareness enables deadline-sensitive tasks such as timeboxed CI repair.
• –Runtime tool updates make dynamic workflows easier to adapt without recreating sessions.
• –Cross-session prompt caching should reduce repeated system-prompt costs for production workloads.