Gemma 4 26B A4B is a 25.81B-parameter mixture-of-experts model (3.8B active per token). At Q4_K_M it needs about 17.7 GB of memory. The MacBook M2 Pro 16GB has 12 GB usable, so it doesn't fit, even at its smallest quantization.
| Quantization | File size | Memory | Generation | First token | Source |
|---|---|---|---|---|---|
| Q4_K_M | 16.9 GB | Doesn't fit | Won't run | — | — |
| Q8_0 | 26.9 GB | Doesn't fit | Won't run | — | — |
| FP16 | 50.5 GB | Doesn't fit | Won't run | — | — |
All models on the MacBook M2 Pro 16GB · Gemma 4 26B A4B on all hardware
Estimates for a short prompt on a single device. Measured numbers come from community benchmarks (r/LocalLLaMA, localscore.ai and more); others are derived from similar setups or projected from specs. Open source on GitHub.