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gpt-oss-120b-MXFP4-Q8

M4 Max (40c) · 128 GB · 4bit · 2026-05-05

Performance

1k

tokens

735.7

PP tok/s

76.8

TG tok/s

1392

TTFT (ms)

59.5

Peak mem (GB)

Hardware

Chip M4 Max (40c)

Memory 128 GB

GPU Cores 40

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	735.7	76.8	59.5 GB	current
4k	836.0	69.0	59.6 GB	view

Batching Results

Batch Size	TG tok/s	Speedup
1×	76.8	1.00×
2×	106.2	1.38×
4×	132.6	1.73×