Horizon Beta vs Claude Sonnet 4

Compare Horizon Beta by OpenRouter against Claude Sonnet 4 by Anthropic, in 20 community votes, horizon beta wins 63% of head-to-head duels, context windows of 256K vs 200K, tested across 26 shared challenges. Updated March 2026.

Which is better, Horizon Beta or Claude Sonnet 4?

Horizon Beta is the better choice overall, winning 63% of 20 blind community votes on Rival. Horizon Beta costs $0/M input tokens vs $3/M for Claude Sonnet 4. Context windows: 256K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between Horizon Beta and Claude Sonnet 4

Horizon Beta is made by openrouter while Claude Sonnet 4 is from anthropic. Horizon Beta has a 256K token context window compared to Claude Sonnet 4's 200K. On pricing, Horizon Beta costs $0/M input tokens vs $3/M for Claude Sonnet 4. 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. Horizon Beta leads in Web Design, Image Generation, while Claude Sonnet 4 leads in Reasoning. Based on blind community voting from the Rival open dataset of 20+ human preference judgments for this pair.

Web Design: Horizon Beta wins 56% of votes
Image Generation: Horizon Beta wins 100% of votes
Reasoning: Claude Sonnet 4 wins 100% of votes
Our Verdict
Horizon Beta
Horizon BetaWinner
Claude Sonnet 4
Claude Sonnet 4Runner-up

Pick Horizon Beta. In 20 blind votes, Horizon Beta wins 63% of the time. That's not luck.

Pick Horizon Beta for Image Generation, Web Design. Pick Claude Sonnet 4 for Reasoning.

Clear winner
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