Can MacBook Pro M1 Max 32GB run gpt-oss-20b?

Apple · 32 GB LPDDR5 · 400 GB/s bandwidth · OpenAI · 21.5B (active 3.6B) · MoE · model ctx up to 128K

METAL

Yes — the MacBook Pro M1 Max 32GB (32 GB LPDDR5) can run gpt-oss-20b. At Q4 with the default 8K context it needs ≈ 13.55 GB VRAM (weights 11.83 GB + KV cache 0.72 GB + 1 GB runtime overhead), which fits within 32 GB. Decode at Q4/8K: ≈ 70.7 tok/s (estimated, batch 1). FP16 needs ≈ 44.72 GB — does not fit on this card. Estimates come from memory-bandwidth math; rows tagged measured override estimates. Relative ranking is more reliable than absolute tok/s. Methodology. Buy MacBook Pro M1 Max 32GB on Amazon →

Fit & speed by quant and context

Quant	Context	VRAM needed	Fits?	tok/s (decode)
Q4	4K	13.19 GB	Yes	70.7 ± est.
Q4	8K default	13.55 GB	Yes	70.7 ± est.
Q4	32K	15.71 GB	Yes	70.7 ± est.
FP16	4K	44.36 GB	No	28.9 ± est.
FP16	8K default	44.72 GB	No	28.4 ± est.
FP16	32K	46.88 GB	No	25.8 ± est.

Fits = weights + KV(ctx) + 1 GB overhead ≤ 95% of VRAM. Measured anchors are context-agnostic; the fit verdict is recomputed per context. A missing tok/s means the model is far beyond this card (offload-only territory).

VRAM breakdown at 8K context

Quant	Weights	KV cache	Overhead	Total needed	MacBook Pro M1 Max 32GB VRAM
Q4	11.83 GB	0.72 GB	1 GB	13.55 GB	32 GB
FP16	43.0 GB	0.72 GB	1 GB	44.72 GB	32 GB

Other GPUs that run gpt-oss-20b

• B200 192GB SXM — ≈1414.1 tok/s Q4 est.
• MI300X 192GB — ≈936.9 tok/s Q4 est.
• H200 141GB SXM5 — ≈848.5 tok/s Q4 est.
• H100 80GB SXM5 — ≈592.2 tok/s Q4 est.
• Gaudi 3 128GB — ≈579.1 tok/s Q4 est.
• A100 80GB SXM4 — ≈360.4 tok/s Q4 est.
• RTX 5090 32GB — ≈282.5 tok/s Q4 measured
• RTX 4090 24GB — ≈225.2 tok/s Q4 measured

All GPUs for gpt-oss-20b →

Other models for the MacBook Pro M1 Max 32GB

• MiniCPM5-1B — ≈235.7 tok/s Q4 est.
• Qwen3.5-2B — ≈127.3 tok/s Q4 est.
• DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx — ≈110.7 tok/s Q4 est.
• Qwen3.6-35B-A3B — ≈84.8 tok/s Q4 est.
• Qwen3.5-35B-A3B — ≈84.8 tok/s Q4 est.
• GLM-4.7-Flash — ≈84.8 tok/s Q4 est.
• Qwen3-30B-A3B-Instruct-2507 — ≈84.8 tok/s Q4 est.
• Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16 — ≈84.8 tok/s Q4 est.

All models on the MacBook Pro M1 Max 32GB →