Apple M4 Max~16 tok/s (Q4)

openai/gpt-oss-120b speed on Apple M4 Max

Quantization-specific throughput and VRAM requirements for openai/gpt-oss-120b running on Apple M4 Max.

Speed Snapshot

Topline estimate from compatibility data

Modelopenai/gpt-oss-120b

GPUApple M4 Max

Q4 speed16 tok/s

Q4 VRAM required59GB

Data Source

Calculation and benchmark status

Speed values come from the compatibility dataset (`estimatedTokensPerSec`) and are sorted by quantization.

For full verdict logic and alternate GPUs, see the canonical compatibility page.

Quantization Speed Table

Quantization	VRAM needed	VRAM available	Speed	Verdict
Q4	59GB	128GB	16 tok/s	✅ Fits
Q8	117GB	128GB	9 tok/s	✅ Fits
FP16	235GB	128GB	5 tok/s	❌ Not recommended