GPT-5.4 Nano vs Meta: Muse Spark 1.1
Compare GPT-5.4 Nano by OpenAI against Meta: Muse Spark 1.1 by Meta AI, context windows of 400K vs 1.0M, tested across 53 shared challenges.
Our Verdict
Meta: Muse Spark 1.1
GPT-5.4 NanoRunner-up
No community votes yet. On paper, Meta: Muse Spark 1.1 has the edge — bigger model tier, newer, bigger context window.
GPT-5.4 Nano is 3.4x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-5.4 Nano
Input
$0.20
6.3× cheaper
Output
$1.25
3.4× cheaper
Meta: Muse Spark 1.1
Input
$1.25
Output
$4.25
GPT-5.4 Nano is cheaper on both — 6.3× input, 3.4× output
Writing DNA
Style Comparison
Similarity
31%
GPT-5.4 Nano uses 5.9x more hedging
GPT-5.4 Nano
Meta: Muse Spark 1.1
51%Vocabulary61%
21wSentence Length20w
0.58Hedging0.10
7.1Bold3.7
5.5Lists2.0
0.01Emoji0.01
1.39Headings0.52
0.05Transitions0.02
Based on 23 + 29 text responses
Research
What we learned reading every model
FAQ
