gpt-5-pro · OpenAI
GPT-5 pro uses more compute to think harder and provide consistently better answers. GPT-5 pro is available in the Responses API only to enable support for multi-turn model interactions before responding to API requests, and other advanced API features in the future. Since GPT-5 pro is designed to tackle tough problems, some requests may take several minutes to finish. To avoid timeouts, try using background mode. As our most advanced reasoning model, GPT-5 pro defaults to (and only supports) reasoning.effort: high. GPT-5 pro does not support code interpreter.
GPT-5 pro uses more compute to think harder and provide consistently better answers. GPT-5 pro is available in the Responses API only to enable support for multi-turn model interactions before responding to API requests, and other advanced API features in the future. Since GPT-5 pro is designed to tackle tough problems, some requests may take several minutes to finish. To avoid timeouts, try using background mode. As our most advanced reasoning model, GPT-5 pro defaults to (and only supports) reasoning.effort: high. GPT-5 pro does not support code interpreter.
GPT 5 Pro has a 400,000 token context window.
On AIHubMix, GPT 5 Pro costs $15 per million input tokens and $120 per million output tokens.
GPT 5 Pro accepts text and image input.
GPT 5 Pro supports thinking, tool calling, function calling and structured outputs. Per-protocol parameter support is listed in the capability table on this page.
GPT 5 Pro is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to gpt-5-pro — no other code changes needed.
GPT 5 Pro is developed by OpenAI. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
GPT 5 Pro was released on October 6, 2025 by OpenAI.
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Use GPT 5 Pro via the AIHubMix unified API — one interface for every major LLM.