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gpt-oss-20b-MXFP4-Q8

M4 Pro (16c) · 48 GB · 4bit · 2026-05-02

Performance

4k

tokens

599.5

PP tok/s

61.1

TG tok/s

6832

TTFT (ms)

11.8

Peak mem (GB)

Hardware

Chip M4 Pro (16c)

Memory 48 GB

GPU Cores 16

Software

oMLX v0.3.8

macOS macOS 15.5

Context 4,096

Performance by Context Length

Context	PP tok/s	TG tok/s	Peak Mem
1k	502.8	63.5	11.8 GB	view
4k	599.5	61.1	11.8 GB	current
8k	609.4	56.3	12.0 GB	view