OpenAI Releases o3-mini, Its Most Cost-Efficient Reasoning Model

OpenAI has officially launched the o3-mini, a cost-efficient model optimized for STEM reasoning, including science, math, and coding. The o3-mini is 24% faster than the o1-mini, with an average response time of 7.7s. It supports function calling, developer messages, Structured Outputs, and streaming.

Available to ChatGPT Plus, Team, and Pro users, o3-mini replaces o1-mini and introduces the “o3-mini-high” option for users prioritizing intelligence over speed. Free ChatGPT users can access it via the “Reason” option in the message composer. The model is also available in Azure OpenAI Service.

With scalable reasoning levels and improved efficiency, OpenAI positions o3-mini as a specialized alternative for high-precision tasks.