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Use APIXO as an OpenAI Responses-compatible API gateway. Keep the Responses API request format, replace the base URL, and use your APIXO API key.

What to change

Quickstart

Streaming

SDK example

Use the OpenAI SDK with APIXO’s Responses-compatible base URL.

Supported OpenAI models

  • gpt-5.4
  • gpt-5.4-pro
  • gpt-5.4-mini
  • gpt-5.4-nano
  • gpt-5.2
  • gpt-5.1

Troubleshooting

  • 401: missing or invalid API key
  • 400: invalid Responses API request body or unsupported model id
  • 429: rate limit or temporary capacity limit
  • 502 / 504: upstream provider error or timeout
Retry 429, 502, and 504 with backoff. Fix 400 and 401 before retrying.