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gpt-oss-20b-MXFP4-Q8

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

Performance

4k

tokens

579.3

PP tok/s

58.5

TG tok/s

7070

TTFT (ms)

11.8

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 4,096

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	current
8k	774.3	58.7	11.9 GB	view
16k	712.5	51.1	12.1 GB	view