GPT-5 vs Sonar Pro Search
Compare GPT-5 by OpenAI against Sonar Pro Search by Perplexity, context windows of 400K vs 200K, tested across 52 shared challenges.
Our Verdict
GPT-5
Sonar Pro SearchRunner-up
No community votes yet. On paper, GPT-5 has the edge — bigger model tier, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
GPT-5
Input
$1.25
2.4× cheaper
Output
$10.00
1.5× cheaper
Sonar Pro Search
Input
$3.00
Output
$15.00
GPT-5 is cheaper on both — 2.4× input, 1.5× output
Writing DNA
Style Comparison
Similarity
76%
Sonar Pro Search uses 14.2x more bold
GPT-5
Sonar Pro Search
65%Vocabulary60%
13wSentence Length22w
0.20Hedging0.30
0.2Bold2.7
4.6Lists2.6
0.00Emoji0.00
0.16Headings2.08
0.03Transitions0.07
Based on 16 + 25 text responses
Research
What we learned reading every model
FAQ
