gpt-5.5-free · OpenAI
This free model API comes from the OpenAI model deployed on Azure. To prevent abuse, the external content filter provided by Azure has been enforced, which will result in additional delays. If you want to experience the full version of the model API without filters, please use the paid version and request the model name ID without "-free". To maintain reliable service, each account is limited to 5 requests per minute, 500 requests per day, and 1 million tokens per day.
This free model API comes from the OpenAI model deployed on Azure. To prevent abuse, the external content filter provided by Azure has been enforced, which will result in additional delays. If you want to experience the full version of the model API without filters, please use the paid version and request the model name ID without "-free". To maintain reliable service, each account is limited to 5 requests per minute, 500 requests per day, and 1 million tokens per day.
GPT 5.5 (free) has a 1,050,000 token context window.
GPT 5.5 (free) accepts text and image input.
GPT 5.5 (free) supports thinking, function calling, structured outputs, web search and tool calling. Per-protocol parameter support is listed in the capability table on this page.
GPT 5.5 (free) 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-5.5-free — no other code changes needed.
GPT 5.5 (free) is developed by OpenAI. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
Paid version: GPT 5.5
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Use GPT 5.5 (free) via the AIHubMix unified API — one interface for every major LLM.