Muse Spark Open 816B A42B
Parameters
816B
Context Length
-
Modality
Text
Architecture
-
KV Cache Rate
128 KB/tok
License
other
Release Date
15 Sept 2026
Knowledge Cutoff
-
API Pricing (per 1M)
Input: $1.25 · Output: $4.25
Hardware Sizing
Precision
Context
Workload Memory: 1523.42 GB
FP16 · 8K context
Base Weights: 1519.92 GB
KV Cache: 1.00 GB
Runtime & Graphs: 2.50 GB
Minimum Required Hardware
Cluster: 16x NVIDIA H200 141GB
1523.4 / 2030.4 GB usable · TP 8 · PP 2
Determine requirements for datacenter hardware:
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Architecture Diagram
Evaluation Benchmarks
Rank
#82
| Benchmark | Score | Rank |
|---|---|---|
Web Development | max 1526 | 48 |
Coding | 0.74 | 51 |
Data Analysis | 0.60 | 58 |
Reasoning | 0.74 | 59 |
General | 0.58 | 61 |
LiveBench Average | 0.58 | 61 |
Intelligence Index | max 0.25 | 108 |
Rankings
Overall Rank
#82
Coding Rank
#61
About Muse Spark Open 816B A42B
Muse Spark Open 816B A42B is a massive mixture-of-experts open foundation model developed by Meta. It activates 42B parameters per token to deliver frontier reasoning and multimodal language performance.
Technical Specifications
Resources
About Muse Spark
The Muse Spark model family developed by Meta.