Muse Spark Open 816B-A42B
Muse Spark Open 816B-A42B is Meta's language model with a 1.0M context window, starting at $1.25 / 1M input and $4.25 / 1M output. A large sparse Mixture-of-Experts multimodal model from Meta with 816B total and 42B active parameters, designed for image-text-to-text reasoning and agentic tasks.
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities3/13
Reasoning·
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | ||
|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | |
| $1.25 | $4.25 | $0.15 | |
Cost Calculator
US Dollar ($)
Preset:
Cheapest Instances to Run It
Cloud GPU instances that can host Muse Spark Open 816B-A42B, ranked by cheapest on-demand price. The model needs about 1958 GB of GPU memory at FP16 precision (estimated from its parameter count), so treat the fit as guidance rather than a guarantee.
All clouds
FP16 (full precision)
US Dollar ($)
Instance | Cloud | GPU | VRAM | Price | Cheapest region |
|---|---|---|---|---|---|
| p6-b300.48xlarge |  AWS | 8× B300 | 2149 GB | $142.42/hr |
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Muse Spark 1.3 | 1.0M | $1.25 | $4.25 | Available | |
| Muse Spark 1.3 Contributor | 1.0M | $0.100 | $0.200 | Available | |
| Muse Spark Open 816B-A42B | — | 1.0M | $1.25 | $4.25 | Current |
| Muse Spark Open 816B-A42B NVFP4 | — | — | — | — | Available |