September 10, 2026 · OpenAIFeature
Agents API in public beta, with a managed Codex harness and durable sessions
Released the Agents API in public beta. Build agents with a managed Codex harness while OpenAI handles session orchestration, context compaction, and recovery.
Use durable sessions to continue work across turns, stream progress, and connect your own tools and MCP servers. Run agents in OpenAI-hosted sandboxes or connect a sandbox from your own infrastructure or a supported provider.
Start with the Agents API quickstart.