Meta: Muse Spark Open
by MetaMeta: Muse Spark Open is a large language model from Meta. It costs $1.25 per million input tokens and $4.25 per million output tokens. Its context window is 1.0M tokens.
- Input / 1M tokens
- $1.25
- Output / 1M tokens
- $4.25
- Cached input / 1M
- $0.150
- Context window
- 1.0M
On repeated prefixes
tokens
Who serves it cheapest
6 hosts serve Muse Spark Open. Same weights, same API - the price difference is pure margin and routing.
| Provider | Input / 1M | Output / 1M | Context | Throughput | Uptime 24h |
|---|---|---|---|---|---|
| MakoraCheapestfp4 | $1.25 | $4.25 | 1.0M | - | 100.0% |
| Modal | $1.25 | $4.25 | 1M | - | 100.0% |
| Together | $1.25 | $4.25 | 1.0M | - | 100.0% |
| Nebiusfp4 | $1.25 | $4.25 | 1.0M | - | 89.8% |
| Fireworks | $1.25 | $4.25 | 1.0M | - | 98.4% |
| BaseTenfp4 | $1.25 | $4.25 | 1.0M | - | 100.0% |
The spread between Makora and BaseTen is about the same for identical weights. Quantization and context limits differ, so check both columns before switching.
About Muse Spark Open
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...
Specifications
| Model ID | meta/muse-spark-open |
|---|---|
| Provider | Meta |
| Context window | 1.0M tokens |
| Max output | 944K tokens |
| Input modalities | text, image, video, file, audio |
| Output modalities | text |
| Knowledge cutoff | - |
| Open weights | Yes - meta-models/Muse-Spark-Open-816B-A42B |
| Released | October 15, 2026 |
Cheaper alternatives
Models that cost less than Muse Spark Open while keeping at least half its context window and every input modality it supports.
Frequently asked
How much does Meta: Muse Spark Open cost?
$1.25 per million input tokens and $4.25 per million output tokens. Cached input reads cost $0.150 per million tokens.
What is the context window of Meta: Muse Spark Open?
1.0M tokens, with up to 944K tokens of output per request.
Which provider serves Meta: Muse Spark Open cheapest?
Makora at $1.25 per million input tokens - about the same cheaper than BaseTen, the most expensive of the 6 hosts serving it.