OpenAI: GPT-5.6 Luna Pro vs OpenAI: GPT-5.6 Sol
Compare OpenAI: GPT-5.6 Luna Pro and OpenAI: GPT-5.6 Sol, both from OpenAI, context windows of 1.1M vs 1.1M, tested across 54 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Sol
OpenAI: GPT-5.6 Luna ProRunner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Sol has the edge — bigger model tier.
OpenAI: GPT-5.6 Luna Pro is 5.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Luna Pro
Input
$1.00
5.0× cheaper
Output
$6.00
5.0× cheaper
OpenAI: GPT-5.6 Sol
Input
$5.00
Output
$30.00
OpenAI: GPT-5.6 Luna Pro is cheaper on both — 5.0× input, 5.0× output
Writing DNA
Style Comparison
Similarity
85%
OpenAI: GPT-5.6 Luna Pro uses 16.3x more emoji
OpenAI: GPT-5.6 Luna Pro
OpenAI: GPT-5.6 Sol
58%Vocabulary63%
18wSentence Length15w
0.81Hedging0.79
2.9Bold3.4
5.1Lists3.8
0.54Emoji0.03
1.10Headings0.95
0.09Transitions0.08
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
