ChatGPT-4o (March 2025) vs Meta: Muse Spark 1.1
Compare ChatGPT-4o (March 2025) by OpenAI against Meta: Muse Spark 1.1 by Meta AI, context windows of 128K vs 1.0M, tested across 32 shared challenges.
Our Verdict
ChatGPT-4o (March 2025)
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 3.5x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
ChatGPT-4o (March 2025)
Input
$5.00
Output
$15.00
Meta: Muse Spark 1.1
Input
$1.25
4.0× cheaper
Output
$4.25
3.5× cheaper
Meta: Muse Spark 1.1 is cheaper on both — 4.0× input, 3.5× output
Writing DNA
Style Comparison
Similarity
41%
ChatGPT-4o (March 2025) uses 94.5x more emoji
ChatGPT-4o (March 2025)
Meta: Muse Spark 1.1
55%Vocabulary61%
24wSentence Length20w
0.52Hedging0.10
3.3Bold3.7
6.0Lists2.0
0.94Emoji0.01
0.63Headings0.52
0.05Transitions0.02
Based on 15 + 29 text responses
Research
What we learned reading every model
FAQ
