Muse Spark Open: Benchmarks, Pricing & Context Window
Muse Spark Open is a language model from Meta, released in October 2026, with multimodal input, a 1.0M-token context window, and pricing from $1.25/M input, $0.150/M cached input, $4.25/M output.
Muse Spark Open is Meta Superintelligence Labs' open-weight natively multimodal Mixture-of-Experts model (816B total / 42B active parameters) with a 1,048,576-token context window. The HF model card specifies text, image, video, and audio
Muse Spark Open benchmarks
Capability tiers
Standing within each category, adjusted for leaderboard depth.
Real tasks performance
High-confidence performance for Muse Spark Open across real-world prompt categories. Only 95% intervals at most 4 points wide are shown.
Performance by conversation depth
How Muse Spark Open holds up as conversations get longer.
Quality Tracker
Muse Spark Open Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Mon Oct 19 2026Muse Spark Open pricing
Providers
Muse Spark Open starts at $1.25 per million input tokens and $4.25 per million output tokens via Together. Reused prompt prefixes cost $0.150 per million cached input tokens.
| Provider | Input $/M | Cached input $/M | Output $/M | Context in / out | TTFT p95 s | Output p5 c/s | Modalities in / out |
|---|---|---|---|---|---|---|---|
 Together | $1.25 | $0.150 | $4.25 | 1.0M/1.0M | — | — | / |
Cached input is the discounted price for prompt tokens served from a provider cache. TTFT is time to first token. Output is characters per second; p5 is the sustained floor exceeded by 95% of observed requests.
Muse Spark Open context window
Input and output token limits for Muse Spark Open, plus how it ranks on long-context understanding.
Try now
huggleMake it with
Muse Spark Open.
Muse Spark Open latency
Muse Spark Open time to first token, sustained output throughput, and failed-request rate from live model usage over the trailing 7 days.
Muse Spark Open examples
Recent arena outputs from Muse Spark Open, picked from the highest-ranked matchups.
Muse Spark Open license
Muse Spark Open is a proprietary model available under its provider's product and API terms, has 816.0B parameters.
- License
- Muse Model License
- Hosted access
- Parameters
- 816.0B
Meta Muse Model License (Muse Spark Open, dated October 15, 2026). Permits use, copying, modification (including fine-tuning), derivative works, distillation, and distribution, subject to attribution ("Built with Muse Spark Open") and a Model-as-a-Service commercial threshold: licensees whose aggregate gross revenue with affiliates exceeds $20M in any consecutive 12-month period must notify Meta and enter a separate written agreement before offering the software or derivatives as a Model-as-a-Service. Internal use, research, and non-MaaS commercial product features are exempt from that threshold. Includes the Muse Spark Open Usage Policy.
Muse Spark Open resources
Official sources for Muse Spark Open: provider documentation, paper or system card, official launch post, model weights.
Muse Spark Open vs other models
The most-compared alternatives to Muse Spark Open are Seed 2.0 Pro, Qwen3.5-397B-A17B, Claude Opus 4.8. Open any pair side-by-side for benchmarks, pricing, context, and latency.
Models like Muse Spark Open
Models ranked just above and below Muse Spark Open by LLM Stats score.
FAQ
Common questions about Muse Spark Open.