GPT-5 MinivsMuse Spark 1.3 Contributor
Muse Spark 1.3 Contributor is cheaper than GPT-5 Mini at $0.1/M vs $0.25/M input tokens.
| Spec | GPT-5 Mini | Muse Spark 1.3 Contributor |
|---|---|---|
| Input price | $0.25/M tokens | $0.1/M tokens |
| Output price | $2/M tokens | $0.2/M tokens |
| Context window | — | 1.0M tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Aug 2025 | Sep 2026 |
Our Verdict
Muse Spark 1.3 Contributor
GPT-5 MiniRunner-up
Not enough votes to call it. On the specs, Muse Spark 1.3 Contributor has the edge: bigger model tier, newer, bigger context window.
Muse Spark 1.3 Contributor costs 10x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GPT-5 Mini
Input
$0.25
Output
$2.00
Muse Spark 1.3 Contributor
Input
$0.10
2.5× cheaper
Output
$0.20
10× cheaper
Muse Spark 1.3 Contributor is cheaper on both: 2.5× input, 10× output.
Where to run it
3 hosts
Muse Spark 1.3 Contributor1 host
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
58%
Muse Spark 1.3 Contributor uses 278.3x more bold
GPT-5 Mini
Muse Spark 1.3 Contributor
62%Vocabulary58%
22wSentence Length13w
0.21Hedging0.27
0.0Bold2.8
3.8Lists2.3
0.00Emoji0.00
0.00Headings0.44
0.04Transitions0.02
Based on 21 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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