Can I Run GPT-oss 120B on Apple M4 Max?

Autor: Jakub Rusinowski · Ostatnia aktualizacja: 1 kwietnia 2026

Yes, comfortably — you'll have ~63 GB of headroom running GPT-oss 120B at Q4_K_M (65 GB, ~8 tok/s (est.)) with room for up to 4K context.

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Sprawdź cenę na Amazon — Apple Mac Studio M4 Max

Apple M4 Max Specs

VRAM128 GB unified memory
Memory Bandwidth546 GB/s

GPT-oss 120B on the Apple M4 Max: VRAM by quantization

QuantVRAM neededFits 128 GB?Max context
F16279.2 GB✗ No
Q8_0166.7 GB✗ No
Q6_K137.6 GB✗ No
Q5_K_M124.2 GB✓ Yes4K
Q4_K_M111.7 GB✓ Yes4K
Q3_K_M90.4 GB✓ Yes4K
Q2_K78.6 GB✓ Yes8K

VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 128 GB of unified memory. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.

GPT-oss 120B Sizes That Fit the Apple M4 Max

GPT-oss 120BQ4_K_M · 65 GB · ~8 tok/s (est.)
Buy vs. rent GPT-oss 120B
Buy the GPU
~$3,499
Apple M4 Max · MSRP
Rent by the hour
from $0.77/hr
A100 (80 GB) class

At 2 hrs/day, buying (~$3,499) beats renting at $0.77/hr after about 6.3 years.

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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.

FAQ

GPT-oss 120B on the Apple M4 Max — does it fit?

Yes, comfortably — you'll have ~63 GB of headroom running GPT-oss 120B at Q4_K_M (65 GB, ~8 tok/s (est.)) with room for up to 4K context.

Which GPT-oss 120B variant fits best on the Apple M4 Max?

GPT-oss 120B at Q4_K_M quantization (65 GB), estimated ~8 tokens/sec, up to 4K context.

GPT-oss 120B on Other GPUs

Popular Models on the Apple M4 Max

VRAM Tier

Troubleshooting

Buying Guide

← Can I Run It? | GPT-oss 120B Model Page | Apple M4 Max GPU Page | Check Your Hardware