DeepSeek V4.1 Flash is a 748.49B-parameter mixture-of-experts model (16B active per token). Smaller quantizations need less memory and run faster, at some cost in quality. Below is the expected speed on each piece of hardware at the best quantization that fits.
| Hardware | Quantization | Memory | Generation | First token |
|---|---|---|---|---|
| Mac Studio M5 Ultra 512GB | Q3_K_M | Fits | 78 tok/s | 0.3 s |
| Mac Studio M3 Ultra 512GB | Q3_K_M | Fits | 53 tok/s | 0.4 s |
| AMD Ryzen AI Max+ PRO 495 192GB (Gorgon Halo) | Q2_K | Partial offload | 17 tok/s | 1.6 s |
| AMD Ryzen AI Max+ 395 128GB (Strix Halo) | Q2_K | Partial offload | 12 tok/s | 1.6 s |
| NVIDIA RTX Spark N1X 128GB (laptop) | Q2_K | Partial offload | 12 tok/s | 1.2 s |
| NVIDIA DGX Spark 128GB | Q2_K | Partial offload | 12 tok/s | 1.2 s |
| NVIDIA RTX 3090 24GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 5090 32GB | Q2_K | Doesn't fit | Won't run | — |
| AMD Radeon AI PRO R9700 32GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 4090 24GB | Q2_K | Doesn't fit | Won't run | — |
| Mac Studio M5 Ultra 256GB | Q2_K | Doesn't fit | Won't run | — |
| MacBook Pro M5 Max 128GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 5060 Ti 16GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX PRO 6000 96GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA Tesla V100 32GB | Q2_K | Doesn't fit | Won't run | — |
| Intel Arc Pro B70 32GB | Q2_K | Doesn't fit | Won't run | — |
| AMD RX 7900 XTX 24GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 5070 Ti 16GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 3060 12GB | Q2_K | Doesn't fit | Won't run | — |
| NVIDIA RTX 5080 16GB | Q2_K | Doesn't fit | Won't run | — |
| Mac mini M5 Pro 64GB | Q2_K | Doesn't fit | Won't run | — |
| AMD Instinct MI50 32GB | Q2_K | Doesn't fit | Won't run | — |
| MacBook Pro M5 Pro 48GB | Q2_K | Doesn't fit | Won't run | — |
| Mac Studio M4 Max 128GB | Q2_K | Doesn't fit | Won't run | — |
| AMD RX 9070 XT 16GB | Q2_K | Doesn't fit | Won't run | — |
| AMD RX 7900 XT 20GB | Q2_K | Doesn't fit | Won't run | — |
| CPU-only (Ryzen 9 9950X, 96GB DDR5) | Q2_K | Doesn't fit | Won't run | — |
| MacBook M4 Pro 24GB | Q2_K | Doesn't fit | Won't run | — |
| H100 80GB (cloud) | Q2_K | Doesn't fit | Won't run | — |
| H200 141GB (cloud) | Q2_K | Doesn't fit | Won't run | — |
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.