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gpt-oss-20b-MXFP4-Q8

M4 (10c) · 24 GB · 4bit · 2026-05-12

Performance

4k

tokens

402.9

PP tok/s

33.2

TG tok/s

10166

TTFT (ms)

11.8

Peak mem (GB)

Hardware

Chip M4 (10c)

Memory 24 GB

GPU Cores 10

Software

oMLX v0.3.8

macOS macOS 26.4.1

Context 4,096

Performance by Context Length

Context	PP tok/s	TG tok/s	Peak Mem
1k	378.6	35.2	11.7 GB	view
4k	402.9	33.2	11.8 GB	current

Batching Results

Batch Size	TG tok/s	Speedup
1×	35.2	1.00×
2×	70.7	2.01×
4×	141.3	4.01×