Muse Spark Open
Muse Spark Open by Meta: League Score, pricing, context window and sourced benchmarks — the full tracked record.
36 Open weights 1M context
League positions: #32 overall · #11 Open-Weight Division. Score coverage: 40% of components measured. Count tokens & cost for Muse Spark Open · Estimate a workload cost
Agent-ready: this model is tracked with agentic strengths. See the AI Agents section for the products and frameworks that put models like this to work.
Specifications & pricing
| Maker | Meta — lab profile |
| Family | Muse Spark |
| Released | Oct 15, 2026 |
| Status | Current |
| Weights | Open weights |
| License | Muse Model License |
| Knowledge cutoff | Not published |
| Context window | 1,048,576 tokens |
| Max output | — |
| Modalities in | text, image, video, audio |
| Modalities out | text |
| API access | Hugging Face, OpenRouter, Together AI, Fireworks AI |
Benchmark results
| Benchmark | Score | Source | Date | Link |
|---|---|---|---|---|
| LiveBench overall | 57.6 / 100 | LiveBench | Oct 16, 2026 | Source |
How its League Score is built
| Component | Raw | Normalised | Weight | Date | Link |
|---|---|---|---|---|---|
| LiveBench overall | 57.6 | 35.6 | 40% | Oct 16, 2026 | Source |
Normalised 0–100 against the tracked field; missing components redistribute their weight. Full rules on the methodology page.
Closest rivals
- Muse Spark Open vs Gemma 4 26B A4B — full comparison or compare any pair
- Muse Spark Open vs Nemotron 3 Ultra 550B-A55B — full comparison or compare any pair
- Muse Spark Open vs Qwen3-Coder-480B-A35B-Instruct — full comparison or compare any pair
FAQ
How much does Muse Spark Open cost?
Muse Spark Open has no first-party API price in our database — it is distributed as open weights or via third-party hosts.
What is the context window of Muse Spark Open?
Muse Spark Open accepts up to 1,048,576 tokens of context.
Is Muse Spark Open open source?
Yes — its weights are publicly downloadable (license: Muse Model License).
Data verified Oct 16, 2026. Spotted an error? Every figure above links to its source.