GPT-5.4 vs Sonar Pro Search
Compare GPT-5.4 by OpenAI against Sonar Pro Search by Perplexity, context windows of 1.1M vs 200K, tested across 52 shared challenges. Updated April 2026.
Which is better, GPT-5.4 or Sonar Pro Search?
GPT-5.4 and Sonar Pro Search are both competitive models. GPT-5.4 costs $2.5/M input tokens vs $3/M for Sonar Pro Search. Context windows: 1050K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.4 and Sonar Pro Search
GPT-5.4 is made by openai while Sonar Pro Search is from perplexity. GPT-5.4 has a 1050K token context window compared to Sonar Pro Search's 200K. On pricing, GPT-5.4 costs $2.5/M input tokens vs $3/M for Sonar Pro Search.
No community votes yet. On paper, GPT-5.4 has the edge — bigger model tier, newer, bigger context window, major provider backing.
Style Comparison
Sonar Pro Search uses 3.6x more transitions
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185x
price gap between models that write identically
178
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279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
