GPT-4.5 vs Meta: Muse Spark 1.1
Compare GPT-4.5 by OpenAI against Meta: Muse Spark 1.1 by Meta AI, context windows of 128K vs 1.0M, tested across 24 shared challenges.
Our Verdict
GPT-4.5
Meta: Muse Spark 1.1
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Meta: Muse Spark 1.1 is 35x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4.5
Input
$75.00
Output
$150.00
Meta: Muse Spark 1.1
Input
$1.25
60× cheaper
Output
$4.25
35× cheaper
Meta: Muse Spark 1.1 is cheaper on both — 60× input, 35× output
Writing DNA
Style Comparison
Similarity
34%
GPT-4.5
Meta: Muse Spark 1.1
63%Vocabulary61%
16wSentence Length20w
0.57Hedging0.10
4.7Bold3.7
6.4Lists2.0
0.00Emoji0.01
1.30Headings0.52
0.54Transitions0.02
Based on 11 + 29 text responses
Research
What we learned reading every model
FAQ
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