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Muse Spark Open
Released 2026-10-15
Muse Spark Open is a coding-optimized open-weight model. Trained specifically for agentic coding workflows, it delivers higher first-attempt accuracy, reliable tool calling, and deep codebase understanding across the repos developers...
You send / 1M
$1.25
tokens in
It replies / 1M
$4.25
tokens out
Memory
1.05M
tokens it can read at once
Typical request
$0.0037
1,000 words in, 400 out
Data privacy
No training or retention: Yes. At least one provider serves it with zero data retention.
| Provider | You send / 1M | It replies / 1M | Uptime | Privacy policy |
|---|---|---|---|---|
| Makora · fp4 | $1.25 | $4.25 | 100% | n/a |
| Modal | $1.25 | $4.25 | 100% | Read |
| Together | $1.25 | $4.25 | 100% | Read |
| Nebius · fp4 | $1.25 | $4.25 | 100% | Read |
| Fireworks | $1.25 | $4.25 | 100% | Read |
| BaseTen · fp4 | $1.25 | $4.25 | 100% | Read |
Based on OpenRouter and Vercel AI Gateway data. Confirm terms with the provider before sending sensitive data.
What it can do
- Reads: text, image, video, file, audio
- Writes: text
- Reasoning: Yes
- Tool calling: Yes
- Longest reply: 944K tokens
- Repeated text is billed at $0.150 per 1M (prompt caching)
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