Claude Haiku 4.5 vs Sonoma Sky Alpha
Compare Claude Haiku 4.5 by Anthropic against Sonoma Sky Alpha by OpenRouter, context windows of 200K vs 2.0M, tested across 35 shared challenges. Updated April 2026.
Which is better, Claude Haiku 4.5 or Sonoma Sky Alpha?
Claude Haiku 4.5 and Sonoma Sky Alpha are both competitive models. Claude Haiku 4.5 costs $1/M input tokens vs $0/M for Sonoma Sky Alpha. Context windows: 200K vs 2000K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Haiku 4.5 and Sonoma Sky Alpha
Claude Haiku 4.5 is made by anthropic while Sonoma Sky Alpha is from openrouter. Claude Haiku 4.5 has a 200K token context window compared to Sonoma Sky Alpha's 2000K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $0/M for Sonoma Sky 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 Haiku 4.5 uses 3.2x more bold
vs
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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.
