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WebSocket support for OpenAI Responses API live on AI Gateway

UpdateVerifiedAdded Sep 22, 2026

AI Gateway now supports WebSocket mode for the OpenAI Responses API. You can keep a persistent connection open and continue each turn by sending only new input items plus previous_response_id , instead of re-sending the full context over a fresh HTTP request every turn.

Read Vercel's release notes

https://vercel.com/changelog/websocket-support-for-openai-responses-api-live-on-ai-gateway

Summaries of vendors' own notes. Product names and logos belong to their owners; logos via logo.dev.

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