OpenAI Codex Mini vs o3 Mini

Compare OpenAI Codex Mini and o3 Mini, both from OpenAI, in 7 community votes, openai codex mini wins 80% of head-to-head duels, context windows of 200K vs 64K, tested across 7 shared challenges. Updated February 2026.

In 7 community votes, OpenAI Codex Mini wins 80% of head-to-head duels. OpenAI Codex Mini leads in Image Generation. Based on blind community voting from the Rival open dataset of 7+ human preference judgments for this pair.

Image Generation: OpenAI Codex Mini wins 75% of votes
Share
FAQ