Bert-Nebulon AlphavsMuse Spark 1.3 Contributor
Muse Spark 1.3 Contributor is the newer model, released after Bert-Nebulon Alpha.
| Spec | Bert-Nebulon Alpha | Muse Spark 1.3 Contributor |
|---|---|---|
| Input price | — | $0.1/M tokens |
| Output price | — | $0.2/M tokens |
| Context window | — | 1.0M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Nov 2025 | Sep 2026 |
Our Verdict
Muse Spark 1.3 Contributor
Bert-Nebulon AlphaRunner-up
Not enough votes to call it. On the specs, Muse Spark 1.3 Contributor has the edge: newer, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
Bert-Nebulon Alpha
Input
—
Output
—
Muse Spark 1.3 Contributor
Input
$0.10
Output
$0.20
Where to run it
1 host
Bert-Nebulon Alpha
No hosts listed on OpenRouter.
Muse Spark 1.3 Contributor1 host
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
54%
Bert-Nebulon Alpha uses 42.4x more emoji
Bert-Nebulon Alpha
Muse Spark 1.3 Contributor
55%Vocabulary58%
21wSentence Length13w
0.28Hedging0.27
10.9Bold2.8
5.7Lists2.3
0.42Emoji0.00
1.40Headings0.44
0.04Transitions0.02
Based on 14 + 27 text responses
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