gpt-5.5 · OpenAI
GPT-5.5 raises the baseline for complex production workflows. It’s a strong fit for coding use cases, tool-heavy agents, grounded assistants, long-context retrieval, product-spec-to-plan workflows, and customer-facing workflows where execution quality and response polish are critical.
GPT-5.5 raises the baseline for complex production workflows. It’s a strong fit for coding use cases, tool-heavy agents, grounded assistants, long-context retrieval, product-spec-to-plan workflows, and customer-facing workflows where execution quality and response polish are critical.
gpt-5.5 has a 1,050,000 token context window. It supports up to 128,000 output tokens.
On AIHubMix, gpt-5.5 costs $5 per million input tokens and $30 per million output tokens. Cached input reads are billed at $0.5 per million tokens.
gpt-5.5 accepts text and image input.
gpt-5.5 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 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 — no other code changes needed.
gpt-5.5 is developed by OpenAI. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
Free version: gpt-5.5-free
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Use gpt-5.5 via the AIHubMix unified API — one interface for every major LLM.