Best open-weight LLMs for the Mac Studio M2 Ultra (192GB)

With ~144 GB available for model weights, 1 open-weight model runs locally on a Mac Studio M2 Ultra (192GB) — each at the best quantization that fits. The 4 that need more memory are listed below with the cheapest provider to rent them instead. VRAM figures are estimates.Updated May 2026.

Different machine? Pick another rig or enter your VRAM →

VRAM ≈ parameters × bytes-per-param × 1.2 overhead, at the best available quantization — see the methodology docs. Estimates, not a guarantee.

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