Compare · updated 2026-11-01
Muse Spark vs Kimi K3.1 Pro
Muse Spark is better at none of the task types we measure; Kimi K3.1 Pro is better at quick answers, writing, coding, reasoning, maths, structured data, translation. Muse Spark is the cheaper of the two on output.
Measured quality by task
| Task | Muse Spark | Kimi K3.1 Pro | Better |
|---|---|---|---|
| Quick answers | 89/100 | 91/100 | Kimi K3.1 Pro |
| Writing | 86/100 | 92/100 | Kimi K3.1 Pro |
| Coding | 84/100 | 89/100 | Kimi K3.1 Pro |
| Reasoning | 83/100 | 85/100 | Kimi K3.1 Pro |
| Maths | 80/100 | 81/100 | Kimi K3.1 Pro |
| Structured data | 88/100 | 92/100 | Kimi K3.1 Pro |
| Long documents | 90/100 | 90/100 | Tie |
| Translation | 89/100 | 91/100 | Kimi K3.1 Pro |
Quality is Nivana’s measured score for each kind of task, from weekly pairwise evals judged by models from several labs. Prices are live AI Gateway list prices per million tokens. Updated 2026-11-01. How this is measured.
Price and context
| Muse Spark | Kimi K3.1 Pro | |
|---|---|---|
| Lab | Meta | Moonshot |
| Input per 1M tokens | $1.25 | $2 |
| Output per 1M tokens | $4.25 | $10 |
| Typical chat answer | $0.00485 | $0.010 |
| Context window | 1.05M | 1.05M |
| Router picks it for | Fallback only | Fallback only |
Which should you use?
Use the one that wins the kind of work you do most, unless the price gap outweighs the quality gap for easy requests. Or don’t choose: Nivana scores both, and the rest of the pool, on every request and sends it to whichever is best for that request.
Questions
Is Muse Spark better than Kimi K3.1 Pro?
On Nivana’s weekly evals Muse Spark scores higher on 0 of 8 task types and Kimi K3.1 Pro on 7 (quick answers, writing, coding, reasoning, maths, structured data, translation). Neither is better at everything.
Which is better for coding, Muse Spark or Kimi K3.1 Pro?
Kimi K3.1 Pro: 89/100 against 84/100 for Muse Spark on Nivana’s coding evals.
Which is better for writing, Muse Spark or Kimi K3.1 Pro?
Kimi K3.1 Pro: 92/100 against 86/100 for Muse Spark on Nivana’s writing evals.
Which is cheaper, Muse Spark or Kimi K3.1 Pro?
Muse Spark: $4.25 per million output tokens against $10 for Kimi K3.1 Pro, about 2.4× less. A typical chat answer costs about $0.0049 on Muse Spark and $0.010 on Kimi K3.1 Pro.
Or let the router pick, per request
Nivana sends every message to the model that scores best for it, sets how hard it thinks, and tells you which one answered. 2,000 free credits to start, no card.