For AI agents: the complete documentation index is available at https://aioproxy.dev/llms.txt, the full documentation bundle is available at https://aioproxy.dev/llms-full.txt, and this page is available as Markdown at https://aioproxy.dev/guide/providers/api/openai-response.md.
AIO Proxy
  • English

      • OpenAI Responses Protocol (openai-response)

      The openai-response protocol connects directly to OpenAI's native Responses API (/v1/responses).

      config.jsonc
      {
  "providers": {
    "openai-responses": {
      "kind": "api",
      "protocol": "openai-response",
      "baseURL": "https://api.openai.com/v1",
      "apiKey": "{{env.OPENAI_API_KEY}}",
      "models": ["gpt-5", "gpt-4.5-preview"],
    },
  },
}

      Features

      • Raw Passthrough: Client calls to /v1/responses are piped with zero-overhead streaming.
      • Cross-Protocol Fallback: Clients sending standard /v1/chat/completions or Anthropic /v1/messages are automatically converted to Responses API model messages.