GPT-5 Pro vs Meta: Muse Spark 1.1
Compare GPT-5 Pro by OpenAI against Meta: Muse Spark 1.1 by Meta AI, context windows of 400K vs 1.0M, tested across 41 shared challenges.
Our Verdict
GPT-5 Pro
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 28x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5 Pro
Input
$15.00
Output
$120.00
Meta: Muse Spark 1.1
Input
$1.25
12× cheaper
Output
$4.25
28× cheaper
Meta: Muse Spark 1.1 is cheaper on both — 12× input, 28× output
Writing DNA
Style Comparison
Similarity
62%
Meta: Muse Spark 1.1 uses 371.3x more bold
GPT-5 Pro
Meta: Muse Spark 1.1
65%Vocabulary61%
15wSentence Length20w
0.32Hedging0.10
0.0Bold3.7
2.9Lists2.0
0.00Emoji0.01
0.00Headings0.52
0.01Transitions0.02
Based on 11 + 29 text responses
Research
What we learned reading every model
FAQ
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