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This tool only shows numbers I measured. Speeds exist for the Mac mini M4 16 GB only; for other memory sizes it shows how much memory the model leaves free, not a speed.
Source: benchmarks.json (Ollama, 3 short runs per cell, 2 Nov 2026). Method and caveats: measured post. macOS itself needs several GB of the remaining memory; I have not measured an exact figure. Buy links go to the current models (Mac mini M6 for 16, 24 and 32 GB; M5 Pro for 48 and 64 GB), which I have not measured. Apple lists the M6 at 153 GB/s (16 GB) or 170 GB/s (24 and 32 GB), and the M5 Pro at 307 GB/s, against 120 GB/s for the M4 I measured.