Meta's Muse Spark Open: 816B Open-Weights Model Tested Against Beam
Sam Witteveen · youtube · 2026-10-19
YouTuber Sam Witteveen reviews Meta's Muse Spark Open, an 816B open-weights model, breaking down what Meta actually released versus what stayed closed. The video covers specs, rankings against the open field, benchmark comparisons with Reflection.ai's Beam, licensing differences, the closed Muse Wonder/Wonder Full models, pricing, LM Arena results, and Alexandr Wang's account of how Meta built Muse, plus the author's eval spreadsheet method and a live demo.
More from Models
- Chris Potts critiques auto-interp evaluation: precision, recall, and the case for ex ante testing — ChrisGPotts · 2026-10-19
- Mistral releases Timestral time-series foundation models, up to 209M params — petrusenko_max · 2026-10-19
- Gemini 4 Scores Just 78% on Saturated FrontierMath Tier 4, Well Behind OpenAI's Models — haider1 · 2026-10-19
- OpenRouter Data Shows US Model Token Use Flat for 8 Weeks as Chinese Providers Hit 79.2T Weekly — SumitGup · 2026-10-19
- Anthropic reportedly tests its next model under Claude Opus 5.5, users spot big quality jumps — testingcatalog · 2026-10-19
- Fish Audio open-sources 35.9B MoE TTS Drama 3, tops leaderboard while decoding faster than its 4.6B predecessor — kastnerkyle · 2026-10-19