GPT-5 Mini vs GPT-5.6 Luna Pro
Compare GPT-5 Mini and GPT-5.6 Luna Pro, both from OpenAI, tested across 54 shared challenges.
Our Verdict
GPT-5 Mini
GPT-5.6 Luna Pro
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GPT-5 Mini is 3.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5 Mini
Input
$0.25
4.0× cheaper
Output
$2.00
3.0× cheaper
GPT-5.6 Luna Pro
Input
$1.00
Output
$6.00
GPT-5 Mini is cheaper on both — 4.0× input, 3.0× output
Writing DNA
Style Comparison
Similarity
52%
GPT-5.6 Luna Pro uses 286.7x more bold
GPT-5 Mini
GPT-5.6 Luna Pro
62%Vocabulary58%
21wSentence Length18w
0.16Hedging0.81
0.0Bold2.9
3.4Lists5.1
0.00Emoji0.54
0.00Headings1.10
0.05Transitions0.09
Based on 15 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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