Claude Opus 4 vs Horizon Beta
Compare Claude Opus 4 by Anthropic against Horizon Beta by OpenRouter, in 55 community votes, claude opus 4 and horizon beta are closely matched, context windows of 200K vs 256K, tested across 40 shared challenges.
Web Design: Claude Opus 4 wins 70% of votes
Image Generation: Horizon Beta wins 86% of votes
Reasoning: Claude Opus 4 wins 75% of votes
Conversation: Horizon Beta wins 67% of votes
Analysis: Horizon Beta wins 100% of votes
Our Verdict
Claude Opus 4
Horizon Beta
Too close to call. Pick based on your use case.
Pick Claude Opus 4 for Reasoning, Web Design. Pick Horizon Beta for Analysis, Image Generation, Conversation.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 4
Input
$15.00
Output
$75.00
Horizon Beta
Input
$0.000
Output
$0.000
Writing DNA
Style Comparison
Similarity
51%
Claude Opus 4 uses 444.0x more bold
Claude Opus 4
Horizon Beta
64%Vocabulary62%
62wSentence Length15w
0.52Hedging0.24
4.4Bold0.0
9.1Lists2.2
0.11Emoji0.00
1.87Headings0.00
0.27Transitions0.18
Based on 16 + 16 text responses
Research
What we learned reading every model
FAQ
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