# Muse Spark Open: Meta’s 816B Open-Weight Model, Benchmarks, and How to Run It > Source: > Published: 2026-10-29 04:14:45+00:00 Meta released Muse Spark Open on October 15 — 816B parameters, 42B active, 1M context. Here are the benchmarks, hardware requirements, license terms, and cloud inference options. The post Muse Spark Open: Meta’s 816B Open-Weight Model, Benchmarks, and How to Run It appeared first on byteiota .