OpenAI o3 vs GPT-5

Compare OpenAI o3 and GPT-5, both from OpenAI, in 21 community votes, gpt-5 wins 63% of head-to-head duels, tested across 46 shared challenges. Updated February 2026.

In 21 community votes, GPT-5 wins 63% of head-to-head duels. OpenAI o3 leads in Web Design, while GPT-5 leads in Reasoning, Image Generation, Conversation. Based on blind community voting from the RIVAL open dataset of 21+ human preference judgments for this pair.