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gpt-oss-20b-MXFP4-Q8

M5 Pro (20c) · 48 GB · 4bit · 2026-07-05

Performance

16k

tokens

1,849

PP tok/s

64.6

TG tok/s

8860

TTFT (ms)

12.2

Peak mem (GB)

Hardware

Chip M5 Pro (20c)

Memory 48 GB

GPU Cores 20

Software

oMLX v0.4.5.dev1

macOS macOS 26.5.1

Context 16,384

Performance by Context Length

Context	PP tok/s	TG tok/s	Peak Mem
4k	1,923	76.6	11.8 GB	view
16k	1,849	64.6	12.2 GB	current