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gpt-oss-120b-MXFP4-Q8

M4 Max (40c) · 128 GB · 4bit · 2026-04-17

Performance

4k

tokens

810.5

PP tok/s

69.5

TG tok/s

5054

TTFT (ms)

59.6

Peak mem (GB)

Hardware

Chip M4 Max (40c)

Memory 128 GB

GPU Cores 40

Software

oMLX v0.3.5

macOS macOS 15.2

Context 4,096

Performance by Context Length

Context	PP tok/s	TG tok/s	Peak Mem
1k	699.3	74.1	59.5 GB	view
4k	810.5	69.5	59.6 GB	current

Batching Results

Batch Size	TG tok/s	Speedup
1×	74.1	1.00×
2×	104.3	1.41×
4×	131.3	1.77×