Meta Muse Spark Open

by Meta AI

Meta Muse Spark Open is an open-weight multimodal model released by Meta AI on October 15, 2026, targeting coding and agentic tasks. It features a sparse mixture-of-experts architecture with 816 billion total parameters and 42 billion active parameters per token, with a long-context window designed for multimodal reasoning and agent workflows.

Multimodal Models
Proprietary

Primary Use Cases

  • Multimodal coding assistance
  • Long-context document analysis
  • Agentic task execution
  • Research and experimentation with open-weight frontier models

✅ Strengths

  • Open weights enable self-hosting and fine-tuning
  • Sparse MoE architecture provides frontier-scale capability with lower active compute
  • Multimodal capabilities for vision and text tasks
  • Backed by Meta AI research infrastructure

⚠️ Limitations

  • Large total parameter count requires significant infrastructure for full deployment
  • License terms should be verified before commercial use (not automatically OSI open source)
  • Performance benchmarks are vendor-reported; independent validation pending

Technical Specifications

Developer
Meta AI
Category
Multimodal Models
Type
🧠 Foundation Model
License
UNKNOWN

Trust & Privacy

Health Status
🟢 Active
Trains on User Data
✅ Does not train
Certifications
None listed

Ecosystem & Integrations

API Access
❌ No
Chrome Extension
❌ No
Mobile App
❌ No
Pricing Model
🔓 Open Source
Free Tier
✅ Available

Pricing Breakdown

Open Weight

Free to download and self-host; license terms apply

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