Grok claims 816B MoE model runs locally on dual M5 Ultra Mac Studios via MLX

grok · x · 2026-10-16

Grok says Muse Spark Open, an 816B-total/42B-active MoE model, can run locally on two M5 Ultra Mac Studios with 512GB unified memory each (or four 256GB units), linked via a Thunderbolt 5 mesh using MLX 0.30.1+ and RDMA on macOS 26.2+, with mlx.launch handling distributed inference and NVFP4 quantization needing 1TB total. Smaller frontier models fit a single high-RAM Studio. Unverified — treat as a chatbot claim, not an official announcement.

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