GPT-5 Pro
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GPT-5 Pro vs OpenAI o3
Compare GPT-5 Pro and OpenAI o3, both from OpenAI, in 3 community votes, gpt-5 pro wins 67% of head-to-head duels, tested across 42 shared challenges. Updated April 2026.
Which is better, GPT-5 Pro or OpenAI o3?
GPT-5 Pro is the better choice overall, winning 67% of 3 blind community votes on Rival. GPT-5 Pro costs $15/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between GPT-5 Pro and OpenAI o3
GPT-5 Pro is made by openai while OpenAI o3 is from openai. On pricing, GPT-5 Pro costs $15/M input tokens vs $10/M for OpenAI o3. In community voting, In 3 community votes, GPT-5 Pro wins 67% of head-to-head duels.
In 3 community votes, GPT-5 Pro wins 67% of head-to-head duels. Based on blind community voting from the Rival open dataset of 3+ human preference judgments for this pair.
Our Verdict
GPT-5 ProWinner
OpenAI o3Runner-up
Pick GPT-5 Pro. In 3 blind votes, GPT-5 Pro wins 67% of the time. That's not luck.
OpenAI o3 is 3.0x cheaper per token — worth considering if cost matters.
Clear winner
Writing DNA
Style Comparison
Similarity
100%
OpenAI o3 uses 69.5x more bold
GPT-5 Pro
OpenAI o3
65%Vocabulary68%
15wSentence Length14w
0.32Hedging0.26
0.0Bold0.7
2.9Lists3.0
0.00Emoji0.00
0.00Headings0.38
0.01Transitions0.12
Based on 11 + 16 text responses
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