o3 Mini vs OpenAI o3

Compare o3 Mini and OpenAI o3, both from OpenAI, in 2 community votes, o3 mini and openai o3 are closely matched, tested across 39 shared challenges. Updated February 2026.

In 2 community votes, o3 Mini and OpenAI o3 are closely matched. o3 Mini and OpenAI o3 perform similarly across challenge categories. Based on blind community voting from the RIVAL open dataset of 2+ human preference judgments for this pair.