OpenAI: GPT-5.6 Luna vs Mistral Nemo
Compare OpenAI: GPT-5.6 Luna by OpenAI against Mistral Nemo by Mistral AI, context windows of 1.1M vs 128K, tested across 54 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Luna
Mistral Nemo
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Mistral Nemo is 86x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Luna
Input
$1.00
Output
$6.00
Mistral Nemo
Input
$0.03
33× cheaper
Output
$0.07
86× cheaper
Mistral Nemo is cheaper on both — 33× input, 86× output
Writing DNA
Style Comparison
Similarity
67%
OpenAI: GPT-5.6 Luna uses 119.5x more headings
OpenAI: GPT-5.6 Luna
Mistral Nemo
59%Vocabulary46%
19wSentence Length19w
0.84Hedging1.08
2.7Bold3.6
4.5Lists8.0
0.00Emoji0.00
1.20Headings0.00
0.10Transitions0.17
Based on 27 + 10 text responses
Research
What we learned reading every model
FAQ
