How we got this number
Each generated token reads the active part of the model from memory once: 2.4 GB. The Mac Studio M5 Max (40-core GPU, 64GB) moves 614 GB/s, so the ceiling is 120+ tokens/sec. Real machines reach a fraction of that ceiling; we use 80%, calibrated against a measured Mac run. Send us your real numbers and we'll replace the estimate.
Faster machines for gpt-oss 20B
| Mac Studio M5 Ultra (96GB) | 120+ tok/s | Check price → |
| Mac Studio M5 Ultra (256GB) | 120+ tok/s | Check price → |
| Mac mini M5 Pro (24GB) | 60 tok/s | Check price → |
| Mac mini M5 Pro (64GB) | 60 tok/s | Check price → |
Other models on the Mac Studio M5 Max (40-core GPU, 64GB)
| lfm 2.5 8B (A1B) | Fast | 120+ tok/s |
| Gemma 3 4B | Fast | 120+ tok/s |
| Qwen 3 30B (A3B) | Fast | 120+ tok/s |
| Qwen3.5 4B | Fast | 120+ tok/s |
| Qwen3.5 35B (A3B) | Fast | 120+ tok/s |
| Qwen3 Coder 30B (A3B) | Fast | 120+ tok/s |