Can You Run DeepSeek V4 Flash Locally? The Real Hardware Math
Short answer: yes, on the right machine, and more machines qualify than you might think. Unlike the recent giants (Kimi K3 at 2.8T, V4 Pro at 1.6T), DeepSeek V4 Flash was shaped for exactly this question: 284B total parameters, 13B active, MIT weights, GGUFs on day one. Here is the full math, so you know before you start a 155 GB download. (Setup steps live in the local guide.)
The Two Numbers That Decide Everything
MoE models split the hardware question in two. Total parameters (284B) decide how much memory you need: every expert must sit somewhere, RAM or VRAM, whether or not it fires. Active parameters (13B) decide how fast it runs: each token only touches a 13B slice, so the compute load resembles a 13B model, not a 284B one. That is why V4 Flash on a big RAM workstation is usable while a dense 284B model at the same size would crawl.
Download Sizes
| Build | Quant | Size |
|---|---|---|
| V4 Flash 0731 (unsloth) | UD-Q4_K_XL | 155 GB |
| V4 Flash 0731 (unsloth) | UD-Q8_K_XL | 162 GB |
| V4 Flash Preview (unsloth, in app catalog) | UD-Q4_K_XL | 144 GB |
| V4 Flash Abliterated (huihui) | Q4_K | 154 GB |
| Qwen 3.5 9B V4 Distill | Q4_K_M | 5.3 GB |
Note the odd pair at the top: 8 bit is only 7 GB bigger than 4 bit, because the expert weights dominate the file and pack tightly. If you clear the memory bar for Q4, check whether you clear it for Q8 too.
Machine Classes, Rated Straight
| Machine | Verdict | Notes |
|---|---|---|
| Mac Studio, 192 GB unified | Yes, comfortable | Q4 fits with context headroom; high memory bandwidth helps speed |
| Workstation, 256 GB DDR5 + 24 GB GPU | Yes | Attention and shared layers on GPU, experts in RAM; interactive speeds |
| Workstation, 192 GB DDR5, no GPU | Yes, slower | Pure CPU works because of the 13B active slice; be patient on prompt processing |
| 128 GB RAM anything | Not the Q4 build | Wait for smaller dynamic quants, or take the distill |
| Gaming PC, 32 to 64 GB RAM | Full model: no | Qwen 3.5 9B V4 Distill (5.3 GB) is the play |
| Any laptop | Distill or cloud | See the cloud guide |
Speed Expectations
Rough guidance, not lab numbers: with experts in system RAM and a GPU carrying the shared layers, a modern DDR5 workstation lands somewhere between mid single digits and the mid teens in tokens per second; memory bandwidth is the lever that moves you inside that range. Apple silicon with its unified memory bandwidth sits near the top. Prompt processing on long inputs is the painful part of hybrid setups; if your workflow feeds the model whole repositories, plan around that or go hosted.
The Context Window Reality
V4 Flash advertises 1M tokens of context, and the hybrid compressed attention design is what makes that affordable upstream. Locally, KV cache still costs real memory that scales with the window, stacking tens of GB on top of the weights as you push six figures. Practical local advice: run 32K to 128K, which covers almost every chat and coding session, and rent the full million from a hosted endpoint the day you need to feed it a whole codebase at once.
If the Math Says No
Two good exits. The Qwen 3.5 9B V4 Distill carries the V4 Flash reasoning style in a 5.3 GB file, runs on nearly anything, and sits one click away in the Locally Uncensored model catalog next to the other strong local picks. Or skip the hardware entirely: LU Labs hosts V4 Flash (and V4 Pro) on flat monthly plans, covered in the cloud guide.