Claude Opus 4.1 vs Horizon Beta
Compare Claude Opus 4.1 by Anthropic against Horizon Beta by OpenRouter, in 15 community votes, horizon beta wins 69% of head-to-head duels, context windows of 200K vs 256K, tested across 40 shared challenges.
Web Design: Horizon Beta wins 57% of votes
Image Generation: Horizon Beta wins 100% of votes
Reasoning: Horizon Beta wins 100% of votes
Our Verdict
Horizon BetaWinner
Claude Opus 4.1Runner-up
Pick Horizon Beta. In 15 blind votes, Horizon Beta wins 69% of the time. That's not luck.
Horizon Beta particularly excels in Image Generation, Reasoning, Web Design.
Clear winner
API pricing
Cost per 1M tokens
Claude Opus 4.1
Input
$15.00
Output
$75.00
Horizon Beta
Input
$0.000
Output
$0.000
Writing DNA
Style Comparison
Similarity
40%
Claude Opus 4.1 uses 509.5x more bold
Claude Opus 4.1
Horizon Beta
61%Vocabulary62%
87wSentence Length15w
0.54Hedging0.24
5.1Bold0.0
6.7Lists2.2
0.38Emoji0.00
1.68Headings0.00
0.13Transitions0.18
Based on 17 + 16 text responses
Research
What we learned reading every model
FAQ
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