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gpt-oss-20b
Performance
4k
tokens
1,905
PP tok/s
55.2
TG tok/s
2150
TTFT (ms)
21.2
Peak mem (GB)
Hardware
Chip
M5 Pro (20c)
Memory
64 GB
GPU Cores
20
Software
oMLX
v0.2.24
macOS
macOS 26.4
Context
4,096
Performance by Context Length
| Context | PP tok/s | TG tok/s | Peak Mem | |
|---|---|---|---|---|
| 1k | 1,541 | 57.6 | 21.1 GB | view |
| 4k | 1,905 | 55.2 | 21.2 GB | current |
| 8k | 1,911 | 50.2 | 21.3 GB | view |
| 16k | 1,793 | 45.2 | 21.5 GB | view |
| 32k | 1,539 | 36.7 | 21.9 GB | view |
| 64k | 1,128 | 26.0 | 22.6 GB | view |
Batching Results
| Batch Size | TG tok/s | Speedup |
|---|---|---|
| 1× | 57.6 | 1.00× |
| 2× | 71.2 | 1.24× |
| 4× | 79.3 | 1.38× |