Nikunj Handa(@nikunjhanda):Multi-agent is now in beta in the Responses API! We highly recommend using websocket mode for it for the best performance, but it also works with most HTTP integrations. All you need to do is set multi_agent.enabled = true. Try it out in Codex's `ultra` mode. Would love your feedback on this one so that we can make it truly great when we GA this feature:

2026.07.09 17:52

Multi-agent is now in beta in the Responses API! We highly recommend using websocket mode for it for the best performance, but it also works with most HTTP integrations. All you need to do is set multi_agent.enabled = true. Try it out in Codex's `ultra` mode. Would love your feedback on this one so that we can make it truly great when we GA this feature:

OpenAI Developers@OpenAIDevs

2026.07.09 17:41

Multi-agent lets GPT‑5.6 spawn concurrent subagents within a single request. They can divide complex work, explore different approaches in parallel, and synthesize their findings into one result. This feature is initially available in beta via the Responses API.

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