Claude Sonnet 4.5 vs Meta: Muse Spark 1.1
Compare Claude Sonnet 4.5 by Anthropic against Meta: Muse Spark 1.1 by Meta AI, context windows of 200K vs 1.0M, tested across 42 shared challenges.
Our Verdict
Meta: Muse Spark 1.1
Claude Sonnet 4.5Runner-up
No community votes yet. On paper, Meta: Muse Spark 1.1 has the edge — newer, bigger context window.
Meta: Muse Spark 1.1 is 3.5x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Sonnet 4.5
Input
$3.00
Output
$15.00
Meta: Muse Spark 1.1
Input
$1.25
2.4× cheaper
Output
$4.25
3.5× cheaper
Meta: Muse Spark 1.1 is cheaper on both — 2.4× input, 3.5× output
Writing DNA
Style Comparison
Similarity
53%
Claude Sonnet 4.5 uses 45.2x more emoji
Claude Sonnet 4.5
Meta: Muse Spark 1.1
64%Vocabulary61%
94wSentence Length20w
0.48Hedging0.10
4.9Bold3.7
8.0Lists2.0
0.45Emoji0.01
1.91Headings0.52
0.07Transitions0.02
Based on 20 + 29 text responses
Research
What we learned reading every model
FAQ
