OpenAI: GPT-5.6 Luna vs Meta: Muse Spark 1.1
Compare OpenAI: GPT-5.6 Luna by OpenAI against Meta: Muse Spark 1.1 by Meta AI, context windows of 1.1M vs 1.0M, tested across 54 shared challenges.
Our Verdict
Meta: Muse Spark 1.1
OpenAI: GPT-5.6 LunaRunner-up
No community votes yet. On paper, Meta: Muse Spark 1.1 has the edge — bigger model tier.
Too close to call
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Luna
Input
$1.00
1.3× cheaper
Output
$6.00
Meta: Muse Spark 1.1
Input
$1.25
Output
$4.25
1.4× cheaper
OpenAI: GPT-5.6 Luna wins input (1.3× cheaper)·Meta: Muse Spark 1.1 wins output (1.4× cheaper)
Writing DNA
Style Comparison
Similarity
37%
OpenAI: GPT-5.6 Luna
Meta: Muse Spark 1.1
59%Vocabulary61%
19wSentence Length20w
0.84Hedging0.10
2.7Bold3.7
4.5Lists2.0
0.00Emoji0.01
1.20Headings0.52
0.10Transitions0.02
Based on 27 + 29 text responses
Research
What we learned reading every model
FAQ
