o3 · OpenAI
OpenAI o3 is a powerful model across multiple domains, setting a new standard for coding, math, science, and visual reasoning tasks.
OpenAI o3 is a powerful model across multiple domains, setting a new standard for coding, math, science, and visual reasoning tasks.
O3 has a 200,000 token context window.
On AIHubMix, O3 costs $2 per million input tokens and $8 per million output tokens. Cached input reads are billed at $0.5 per million tokens.
O3 accepts text, image and PDF input.
O3 supports thinking, tool calling, function calling and structured outputs. Per-protocol parameter support is listed in the capability table on this page.
O3 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 o3 — no other code changes needed.
O3 is developed by OpenAI. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
O3 was released on April 16, 2025 by OpenAI.
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Use O3 via the AIHubMix unified API — one interface for every major LLM.