GPT-5
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GPT-5 vs OpenAI o3
Compare GPT-5 and OpenAI o3, both from OpenAI, in 21 community votes, gpt-5 wins 63% of head-to-head duels, tested across 46 shared challenges. Updated March 2026.
Which is better, GPT-5 or OpenAI o3?
GPT-5 is the better choice overall, winning 63% of 21 blind community votes on Rival. GPT-5 costs $1.25/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between GPT-5 and OpenAI o3
GPT-5 is made by openai while OpenAI o3 is from openai. On pricing, GPT-5 costs $1.25/M input tokens vs $10/M for OpenAI o3. In community voting, In 21 community votes, GPT-5 wins 63% of head-to-head duels.
In 21 community votes, GPT-5 wins 63% of head-to-head duels. GPT-5 leads in Reasoning, Image Generation, Conversation, while OpenAI o3 leads in Web Design. Based on blind community voting from the Rival open dataset of 21+ human preference judgments for this pair.
Reasoning: GPT-5 wins 67% of votes
Web Design: OpenAI o3 wins 67% of votes
Image Generation: GPT-5 wins 100% of votes
Conversation: GPT-5 wins 67% of votes
Our Verdict
GPT-5Winner
OpenAI o3Runner-up
Pick GPT-5. In 21 blind votes, GPT-5 wins 63% of the time. That's not luck.
Pick GPT-5 for Image Generation, Reasoning, Conversation. Pick OpenAI o3 for Web Design. GPT-5 is 4.0x cheaper per token — worth considering if cost matters.
Clear winner
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