Claude Opus 4.5
Nothing here. The model returned empty. We stared at it for a while.
Claude Opus 4.5 vs GPT-5 Mini
Compare Claude Opus 4.5 by Anthropic against GPT-5 Mini by OpenAI, in 1 community votes, claude opus 4.5 wins 100% of head-to-head duels, tested across 46 shared challenges. Updated April 2026.
Which is better, Claude Opus 4.5 or GPT-5 Mini?
Claude Opus 4.5 is the better choice overall, winning 100% of 1 blind community votes on Rival. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.5 and GPT-5 Mini
Claude Opus 4.5 is made by anthropic while GPT-5 Mini is from openai. In community voting, In 1 community votes, Claude Opus 4.5 wins 100% of head-to-head duels.
In 1 community votes, Claude Opus 4.5 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.
Our Verdict
Claude Opus 4.5Winner
GPT-5 MiniRunner-up
Pick Claude Opus 4.5. In 1 blind votes, Claude Opus 4.5 wins 100% of the time. That's not luck.
Clear winner
Writing DNA
Style Comparison
Similarity
100%
Claude Opus 4.5 uses 580.0x more bold
Claude Opus 4.5
GPT-5 Mini
64%Vocabulary62%
55wSentence Length21w
0.86Hedging0.16
5.8Bold0.0
4.5Lists3.4
0.15Emoji0.00
1.59Headings0.00
0.05Transitions0.05
Based on 24 + 15 text responses
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