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gpt-oss-20b-MXFP4-Q8
Performance
4k
tokens
3,385
PP tok/s
114.3
TG tok/s
1210
TTFT (ms)
11.8
Peak mem (GB)
Hardware
Chip
M5 Max (40c)
Memory
128 GB
GPU Cores
40
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 | 1,097 | 123.4 | 11.8 GB | view |
| 4k | 3,385 | 114.3 | 11.8 GB | current |
| 8k | 3,981 | 108.3 | 12.0 GB | view |
| 16k | 3,966 | 26.7 | 12.3 GB | view |
Batching Results
| Batch Size | TG tok/s | Speedup |
|---|---|---|
| 1× | 123.4 | 1.00× |
| 2× | 176.4 | 1.43× |
| 4× | 223.6 | 1.81× |