OpenAI: GPT-5.6 Luna Pro vs Sonar Pro Search
Compare OpenAI: GPT-5.6 Luna Pro by OpenAI against Sonar Pro Search by Perplexity, context windows of 1.1M vs 200K, tested across 52 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Luna Pro
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.
Too close to call
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Luna Pro
Input
$1.00
3.0× cheaper
Output
$6.00
2.5× cheaper
Sonar Pro Search
Input
$3.00
Output
$15.00
OpenAI: GPT-5.6 Luna Pro is cheaper on both — 3.0× input, 2.5× output
Writing DNA
Style Comparison
Similarity
56%
OpenAI: GPT-5.6 Luna Pro uses 53.7x more emoji
OpenAI: GPT-5.6 Luna Pro
Sonar Pro Search
58%Vocabulary60%
18wSentence Length22w
0.81Hedging0.30
2.9Bold2.7
5.1Lists2.6
0.54Emoji0.00
1.10Headings2.08
0.09Transitions0.07
Based on 27 + 25 text responses
Research
What we learned reading every model
FAQ
