GPT-5.6 SolvsMuse Spark 1.3
Muse Spark 1.3 is cheaper than GPT-5.6 Sol at $1.25/M vs $5/M input tokens.
| Spec | GPT-5.6 Sol | Muse Spark 1.3 |
|---|---|---|
| Input price | $5/M tokens | $1.25/M tokens |
| Output price | $30/M tokens | $4.25/M tokens |
| Context window | 1.1M tokens | 1.0M tokens |
| Released | Jul 2026 | Sep 2026 |
Our Verdict
GPT-5.6 Sol
Muse Spark 1.3
Not enough votes to call it. On the specs, nothing separates them.
Muse Spark 1.3 costs 7.1x less per token.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.6 Sol
Input
$5.00
Output
$30.00
Muse Spark 1.3
Input
$1.25
4.0× cheaper
Output
$4.25
7.1× cheaper
Muse Spark 1.3 is cheaper on both — 4.0× input, 7.1× output
Writing DNA
Style Comparison
Similarity
40%
GPT-5.6 Sol uses 3.3x more emoji
GPT-5.6 Sol
Muse Spark 1.3
63%Vocabulary59%
15wSentence Length14w
0.79Hedging0.28
3.4Bold2.6
3.8Lists2.3
0.03Emoji0.00
0.95Headings0.48
0.08Transitions0.02
Based on 27 + 27 text responses
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