o1 vs o3 Mini
Compare o1 and o3 Mini, both from OpenAI, in 2 community votes, o1 and o3 mini are closely matched, context windows of 128K vs 64K, tested across 54 shared challenges. Updated May 2026.
Which is better, o1 or o3 Mini?
o1 and o3 Mini are closely matched based on 2 community votes. o1 costs $15/M input tokens vs $1.1/M for o3 Mini. Context windows: 128K vs 64K tokens. Compare their real outputs side by side below.
Key Differences Between o1 and o3 Mini
o1 is made by openai while o3 Mini is from openai. o1 has a 128K token context window compared to o3 Mini's 64K. On pricing, o1 costs $15/M input tokens vs $1.1/M for o3 Mini. In community voting, In 2 community votes, o1 and o3 Mini are closely matched.
In 2 community votes, o1 and o3 Mini are closely matched. o1 and o3 Mini perform similarly across challenge categories. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Per 1M tokens
o3 Mini is cheaper on both — 14× input, 14× output
Votes are tied. o1 has a 128K context window vs 64K — handles longer documents.
o3 Mini is 14x cheaper per token — worth considering if cost matters.
Style Comparison
o1 uses 1.5x more lists
