Claude Opus 4.5
Nothing here. The model returned empty. We stared at it for a while.
Claude Opus 4.5 vs DeepSeek R1
Compare Claude Opus 4.5 by Anthropic against DeepSeek R1 by DeepSeek, in 1 community votes, claude opus 4.5 and deepseek r1 are closely matched, tested across 53 shared challenges. Updated April 2026.
Which is better, Claude Opus 4.5 or DeepSeek R1?
Claude Opus 4.5 and DeepSeek R1 are closely matched based on 1 community votes. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.5 and DeepSeek R1
Claude Opus 4.5 is made by anthropic while DeepSeek R1 is from deepseek. In community voting, In 1 community votes, Claude Opus 4.5 and DeepSeek R1 are closely matched.
In 1 community votes, Claude Opus 4.5 and DeepSeek R1 are closely matched. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.
Our Verdict
Claude Opus 4.5Winner
DeepSeek R1Runner-up
Votes are tied. Claude Opus 4.5 is newer and likely incorporates more recent improvements.
Too close to call
Writing DNA
Style Comparison
Similarity
85%
DeepSeek R1 uses 5.3x more transitions
Claude Opus 4.5
DeepSeek R1
64%Vocabulary62%
55wSentence Length15w
0.86Hedging0.52
5.8Bold8.0
4.5Lists5.7
0.15Emoji0.04
1.59Headings0.62
0.05Transitions0.28
Based on 24 + 22 text responses
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