Claude Sonnet 4 vs Horizon Beta
Compare Claude Sonnet 4 by Anthropic against Horizon Beta by OpenRouter, in 20 community votes, horizon beta wins 63% of head-to-head duels, context windows of 200K vs 256K, tested across 41 shared challenges. Updated April 2026.
Which is better, Claude Sonnet 4 or Horizon Beta?
Horizon Beta is the better choice overall, winning 63% of 20 blind community votes on Rival. Claude Sonnet 4 costs $3/M input tokens vs $0/M for Horizon Beta. Context windows: 200K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Sonnet 4 and Horizon Beta
Claude Sonnet 4 is made by anthropic while Horizon Beta is from openrouter. Claude Sonnet 4 has a 200K token context window compared to Horizon Beta's 256K. On pricing, Claude Sonnet 4 costs $3/M input tokens vs $0/M for Horizon Beta. In community voting, In 20 community votes, Horizon Beta wins 63% of head-to-head duels.
In 20 community votes, Horizon Beta wins 63% of head-to-head duels. Claude Sonnet 4 leads in Reasoning, while Horizon Beta leads in Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 20+ human preference judgments for this pair.
Pick Horizon Beta. In 20 blind votes, Horizon Beta wins 63% of the time. That's not luck.
Pick Claude Sonnet 4 for Reasoning. Pick Horizon Beta for Image Generation, Web Design.
Style Comparison
Claude Sonnet 4 uses 503.7x more bold
vs
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
