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.
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
API pricing
Cost per 1M tokens
GPT-5 Pro
Input
$15.00
Output
$120.00
OpenAI o3
Input
$10.00
1.5× cheaper
Output
$40.00
3.0× cheaper
OpenAI o3 is cheaper on both — 1.5× input, 3.0× output
Writing DNA
Style Comparison
Similarity
82%
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
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
