o1 vs OpenAI o3
Compare o1 and OpenAI o3, both from OpenAI, in 9 community votes, openai o3 wins 60% of head-to-head duels, tested across 54 shared challenges. Updated May 2026.
Which is better, o1 or OpenAI o3?
OpenAI o3 is the better choice overall, winning 60% of 9 blind community votes on Rival. o1 costs $15/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between o1 and OpenAI o3
o1 is made by openai while OpenAI o3 is from openai. On pricing, o1 costs $15/M input tokens vs $10/M for OpenAI o3. In community voting, In 9 community votes, OpenAI o3 wins 60% of head-to-head duels.
In 9 community votes, OpenAI o3 wins 60% of head-to-head duels. OpenAI o3 has the edge overall, but performance varies by task type. Based on blind community voting from the Rival open dataset of 9+ human preference judgments for this pair.
Per 1M tokens
OpenAI o3 is cheaper on both — 1.5× input, 1.5× output
Pick OpenAI o3. In 9 blind votes, OpenAI o3 wins 60% of the time. That's not luck.
Style Comparison
o1 uses 7.2x more bold
