Claude Opus 4.1 vs GPT-5 Pro
Compare Claude Opus 4.1 by Anthropic against GPT-5 Pro by OpenAI, in 9 community votes, gpt-5 pro wins 56% of head-to-head duels, context windows of 200K vs 400K, tested across 41 shared challenges.
Reasoning: Claude Opus 4.1 and GPT-5 Pro are tied
Image Generation: Claude Opus 4.1 and GPT-5 Pro are tied
Conversation: Claude Opus 4.1 and GPT-5 Pro are tied
Analysis: Claude Opus 4.1 and GPT-5 Pro are tied
Our Verdict
GPT-5 ProWinner
Claude Opus 4.1Runner-up
GPT-5 Pro has the edge overall. In 9 blind votes, GPT-5 Pro wins 56% of the time.
Slight edge
API pricing
Cost per 1M tokens
Claude Opus 4.1
Input
$15.00
Output
$75.00
1.6× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
Writing DNA
Style Comparison
Similarity
41%
Claude Opus 4.1 uses 509.5x more bold
Claude Opus 4.1
GPT-5 Pro
61%Vocabulary65%
87wSentence Length15w
0.54Hedging0.32
5.1Bold0.0
6.7Lists2.9
0.38Emoji0.00
1.68Headings0.00
0.13Transitions0.01
Based on 17 + 11 text responses
Research
What we learned reading every model
FAQ
Common questions
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