OpenAI API — January, 2025

This release introduces o3-mini, a new small reasoning model specifically optimized for science, math, and coding tasks, benefiting users requiring specialized efficiency in these domains. Additionally, expanded access to the o1 series of models, renowned for complex reasoning through reinforcement learning, allows more users to tackle sophisticated challenges. These updates provide greater model choice and accessibility for diverse computational needs.

Source: official ChatGPT & Codex release notes. Summaries are written from the official notes; see how we work.