Claude Opus 4 vs Sonoma Dusk Alpha
Compare Claude Opus 4 by Anthropic against Sonoma Dusk Alpha by OpenRouter, context windows of 200K vs 2.0M, tested across 34 shared challenges. Updated April 2026.
Which is better, Claude Opus 4 or Sonoma Dusk Alpha?
Claude Opus 4 and Sonoma Dusk Alpha are both competitive models. Claude Opus 4 costs $15/M input tokens vs $0/M for Sonoma Dusk Alpha. Context windows: 200K vs 2000K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4 and Sonoma Dusk Alpha
Claude Opus 4 is made by anthropic while Sonoma Dusk Alpha is from openrouter. Claude Opus 4 has a 200K token context window compared to Sonoma Dusk Alpha's 2000K. On pricing, Claude Opus 4 costs $15/M input tokens vs $0/M for Sonoma Dusk Alpha.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Style Comparison
Claude Opus 4 uses 11.2x more emoji
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.
