OpenAI: GPT-5.6 Luna Pro vs Meta: Muse Spark 1.1
Compare OpenAI: GPT-5.6 Luna Pro 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 Luna ProRunner-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 Pro
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 Pro wins input (1.3× cheaper)·Meta: Muse Spark 1.1 wins output (1.4× cheaper)
Writing DNA
Style Comparison
Similarity
41%
OpenAI: GPT-5.6 Luna Pro uses 53.7x more emoji
OpenAI: GPT-5.6 Luna Pro
Meta: Muse Spark 1.1
58%Vocabulary61%
18wSentence Length20w
0.81Hedging0.10
2.9Bold3.7
5.1Lists2.0
0.54Emoji0.01
1.10Headings0.52
0.09Transitions0.02
Based on 27 + 29 text responses
Research
What we learned reading every model
FAQ
