Claude Haiku 4.5 vs Sonar Pro Search
Compare Claude Haiku 4.5 by Anthropic against Sonar Pro Search by Perplexity, context windows of 200K vs 200K, tested across 53 shared challenges. Updated April 2026.
Which is better, Claude Haiku 4.5 or Sonar Pro Search?
Claude Haiku 4.5 and Sonar Pro Search are both competitive models. Claude Haiku 4.5 costs $1/M input tokens vs $3/M for Sonar Pro Search. Context windows: 200K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Haiku 4.5 and Sonar Pro Search
Claude Haiku 4.5 is made by anthropic while Sonar Pro Search is from perplexity. Claude Haiku 4.5 has a 200K token context window compared to Sonar Pro Search's 200K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $3/M for Sonar Pro Search.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Claude Haiku 4.5 is 3.0x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Haiku 4.5 uses 20.4x 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.
