DeepSeek V4.1 Flash
DeepSeek V4.1 Flash is an open-weights language model from DeepSeek, released September 9, 2026. It has 552B parameters (mixture-of-experts, 17B active). The context window is 1M tokens. On the Epoch Capabilities Index it scores 156.7, rank 34 of 256 rated models.
The widespread adoption of long-horizon agents has made model workloads increasingly input- heavy. Although prior work has substantially reduced the cost of long-context computation, prefill remains computationally expensive, and large KV caches continue to strain HBM and SSD capacity and data-transfer bandwidth.
Check it against your own PC →
Can you run DeepSeek V4.1 Flash locally?
Even with 32 GB of VRAM and 32 GB of RAM it is too large to run at a usable speed on a single consumer GPU. Estimates assume 32 GB of DDR5 RAM, a 16K context and llama.cpp-style GGUF quantization. Enter your exact hardware in the live app.
| GPU memory | Verdict | Best quant | VRAM | RAM | tok/s |
|---|---|---|---|---|---|
| 6 GB VRAM | Too large | – | – | – | – |
| 8 GB VRAM | Too large | – | – | – | – |
| 12 GB VRAM | Too large | – | – | – | – |
| 16 GB VRAM | Too large | – | – | – | – |
| 24 GB VRAM | Too large | – | – | – | – |
| 32 GB VRAM | Too large | – | – | – | – |
Ready-made quantizations on Hugging Face: antirez/deepseek-v4.1-flash-gguf · kyuz0/deepseek-v4.1-flash-gguf · pfeifferj/DeepSeek-V4.1-Flash-GSQ-RCO-GGUF · vcruz305/DeepSeek-V4.1-Flash-GGUF · smalinin/DeepSeek-V4.1-Flash-GGUF · Lucebox/DeepSeek-V4.1-Flash-ROCMFP23-GGUF
Strengths by category
ModelTape's 0–100 fit on Epoch AI benchmark results.
| Category | Score | Based on |
|---|---|---|
| Reasoning | 27.5 | Chess Puzzles, SimpleBench, Mystery Game Puzzles |
| Math | 53.5 | ProofBench, OTIS Mock AIME 2024-2025, FrontierMath-Tiers-1-3-v2-Private, FrontierMath-Tier-4-v2-Private |
| Knowledge | 73.5 | GPQA diamond, SimpleQA Verified |
Benchmark results
| Benchmark (Epoch AI) | Score |
|---|---|
| OTIS Mock AIME | 98.3% |
| GPQA Diamond | 90.0% |
| FrontierMath (Tiers 1–3) | 70.9% |
| MirrorCode | 64.4% |
| SimpleBench | 60.0% |
| ProofBench | 54.0% |
| Chess Puzzles | 45.3% |
| SimpleQA Verified | 42.9% |
| Mystery Game Puzzles | 37.2% |
| FrontierMath-Tier-4-v2-Private | 26.8% |
| Furniture Assembly | 6.0% |
Links
Announcement · Hugging Face: deepseek-ai/DeepSeek-V4.1-Flash · Epoch AI benchmarks
Models with a similar score
Claude Haiku 5.5 · GPT-5.4 Pro · GPT-5.5 · Claude Opus 4.8 · DeepSeek V4.1 Flash 1017 · Gemini 3.8 Flash · Kimi K3 · Gemini 3.7 Flash
More from DeepSeek
DeepSeek V4.1 Flash 1017 · DeepSeek V4 Flash Vision Exp · DeepSeek V4 Pro 0813 · DeepSeek V4 Flash 0731 · DeepSeek V4 Pro DSpark · DeepSeek V4 Flash DSpark · DeepSeek-V4-Pro · DeepSeek-V4-Flash