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gpt-oss-20b-MXFP4-Q8

M4 Pro (20c) · 48 GB · 4bit · 2026-03-12

Performance

4k

tokens

607.6

PP tok/s

58.7

TG tok/s

6742

TTFT (ms)

11.5

Peak mem (GB)

Hardware

Chip M4 Pro (20c)

Memory 48 GB

GPU Cores 20

Software

oMLX v0.2.9

macOS macOS 26.3.1

Context 4,096

Performance by Context Length

Context	PP tok/s	TG tok/s	Peak Mem
1k	514.9	65.5	11.4 GB	view
4k	607.6	58.7	11.5 GB	current

Batching Results

Batch Size	TG tok/s	Speedup
1×	65.5	1.00×
2×	97.3	1.49×
4×	115.1	1.76×