OpenAI Ships WebSockets in the Responses API, Betting That Agents Need Always-On Connections

OpenAI added WebSocket support to its Responses API, targeting low-latency, long-running agent workflows — a clear signal that the company sees persistent connections, not request-response cycles, as the future of how developers build with its models.

OpenAI quietly shipped a feature Monday that says more about its strategic direction than most product launches: WebSocket support in the Responses API. As @OpenAIDevs announced, the new capability is "built for low-latency, long-running agents with heavy tool calls" — a description that neatly summarizes where OpenAI thinks the industry is heading.

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