Meta Ships Its Most Capable Open-Weight Models, with Production Inference Running on SGLang

ying11231 · x · 2026-10-16

SGLang team confirmed Meta released its most capable US open-weight models today, and Meta's production inference runs on SGLang — "the best open model on the best open-source inference engine."

The quoted post details Muse Spark Open, built to plan, act, and use the computer across agentic tasks, letting users build a personal AI agent on a fully open stack: NVFP4 MegaMoE and sequence parallelism for responsiveness, the DFlash2 draft model for faster agentic/coding work, and fine-tuning via Miles. Partners include Meta, NVIDIA, AMD, Intel, and RadixArk.

Related event: Meta Open-Sources Muse Spark Open: 816B Parameters, 1M Context(81 posts)→

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