OpenAI: GPT-5.6 Luna vs OpenAI o4 Mini High
Compare OpenAI: GPT-5.6 Luna and OpenAI o4 Mini High, both from OpenAI, context windows of 1.1M vs 200K, tested across 53 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Luna
OpenAI o4 Mini HighRunner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Luna has the edge — newer, bigger context window.
Too close to call
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Luna
Input
$1.00
1.1× cheaper
Output
$6.00
OpenAI o4 Mini High
Input
$1.10
Output
$4.40
1.4× cheaper
OpenAI: GPT-5.6 Luna wins input (1.1× cheaper)·OpenAI o4 Mini High wins output (1.4× cheaper)
Writing DNA
Style Comparison
Similarity
53%
OpenAI: GPT-5.6 Luna uses 275.0x more bold
OpenAI: GPT-5.6 Luna
OpenAI o4 Mini High
59%Vocabulary70%
19wSentence Length18w
0.84Hedging0.33
2.7Bold0.0
4.5Lists1.3
0.00Emoji0.02
1.20Headings0.00
0.10Transitions0.04
Based on 27 + 14 text responses
Research
What we learned reading every model
FAQ
