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gpt-oss-20b-MXFP4-Q8

M4 Pro (20c) · 64 GB · 4bit · 2026-04-15

Performance

8k

tokens

774.3

PP tok/s

58.7

TG tok/s

10580

TTFT (ms)

11.9

Peak mem (GB)

Hardware

Chip M4 Pro (20c)

Memory 64 GB

GPU Cores 20

Software

oMLX v0.3.5

macOS macOS 26.3.1

Context 8,192

Performance by Context Length

Context	PP tok/s	TG tok/s	Peak Mem
1k	684.2	13.1	12.0 GB	view
4k	579.3	58.5	11.8 GB	view
8k	774.3	58.7	11.9 GB	current
16k	712.5	51.1	12.1 GB	view