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gpt-oss-20b-MXFP4-Q8

M1 Max (24c) · 64 GB · 4bit · 2026-05-12

Performance

1k

tokens

306.0

PP tok/s

55.8

TG tok/s

3346

TTFT (ms)

11.8

Peak mem (GB)

Hardware

Chip M1 Max (24c)

Memory 64 GB

GPU Cores 24

Software

oMLX v0.3.8

macOS macOS 26.4.1

Context 1,024

Performance by Context Length

Context	PP tok/s	TG tok/s	Peak Mem
1k	306.0	55.8	11.8 GB	current
4k	371.8	50.9	11.8 GB	view

Batching Results

Batch Size	TG tok/s	Speedup
1×	55.8	1.00×
2×	66.7	1.20×
4×	73.9	1.32×