o3-mini
o3 mini
o3-mini is a fast-reasoning model released by OpenAI in January 2025, positioned as the company's most cost-efficient offering in its o3 series at the time . Per 源码资本's year-end review, its reasoning capabilities were considered comparable to the earlier o1 model . The model specialized in rapid inference rather than the more intensive reasoning of the full o3, and was priced 63% below o1-mini . It was subsequently phased out from ChatGPT tiers following the April 2025 launch of o3 and o4-mini .
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