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gpt-oss-120b-MXFP4-Q8

M4 Max (40c) · 128 GB · 4bit · 2026-05-04
Performance
128k
tokens
368.0
PP tok/s
21.6
TG tok/s
356137
TTFT (ms)
66.3
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 131,072
Performance by Context Length
Context PP tok/s TG tok/s Peak Mem
1k 741.8 77.3 59.5 GB view
4k 839.4 73.3 59.6 GB view
8k 840.7 68.1 59.9 GB view
16k 766.5 60.7 60.4 GB view
32k 672.9 49.9 61.1 GB view
64k 536.3 36.3 62.8 GB view
128k 368.0 21.6 66.3 GB current
Batching Results
Batch Size TG tok/s Speedup
77.3 1.00×
103.1 1.33×
122.0 1.58×
133.5 1.73×