DeepSeek V4.1 Flash

In non-nerd speak

Who makes it: DeepSeek. The files come from the maker's own Hugging Face account.

License: MIT License. A short, standard open source license. You can do almost anything with it. Keep the copyright notice.

Business use: Yes. Business use is allowed. Keep the copyright notice when you share it.

Training data: We have not found a full public data release. Not yet checked in depth.

Will it say no?

Not sure yet. The maker's card does not say how often it says no. So we won't guess.

This comes from what the maker wrote, checked Oct 16, 2026. We have not run our own tests yet. It sits next to the trust score and does not change it. How we pick these labels.

Will it run on my computer?

Not for home computers. This one needs server-class hardware, or DeepSeek's own suggested setup, with hundreds of GB of memory. Most people should use it through a hosted service instead. This model uses a mix of experts. Only part of it works on each word, so it runs faster than its size suggests.

Not sure? Use our pick-by-computer guide.

How to run it in LM Studio

1. Get LM Studio from lmstudio.ai and open it.
2. Open the Discover tab. Search for antirez/deepseek-v4.1-flash-gguf.
3. Pick a file that ends in Q4_K_M. It is the best mix of size and quality for most people.
4. Click Download. When it is done, open a new chat and load the model.

The files are GGUF builds that LM Studio can load. We checked that this repo exists on Oct 16, 2026. Full LM Studio guide.

How to use it with Hermes

Does it fit? Yes. Its memory window is big enough for Hermes.

1. Load the model in LM Studio. Set the context length to at least 64000.
2. In LM Studio, open the Developer tab and start the server.
3. In a terminal, run hermes model. Choose LM Studio and press Enter to keep http://localhost:1234/v1.
4. Pick this model from the list. Then run hermes to start.

Steps based on the Hermes docs. Full Hermes guide.

Common questions

Is DeepSeek V4.1 Flash truly open source?

Yes, OSI-approved license. A short, standard open source license. You can do almost anything with it. Keep the copyright notice.

Can I use DeepSeek V4.1 Flash for my business?

Yes. Business use is allowed. Keep the copyright notice when you share it.

Do I need to sign up to download DeepSeek V4.1 Flash?

No. Download without an account.

How much memory does DeepSeek V4.1 Flash need?

Our estimate is about 400 GB of RAM for a 4-bit file of about 331.2 GB. This is a rough guide, not a test.

Similar models to compare

Same maker first, then models that need about the same memory.

Where DeepSeek V4.1 Flash shows up

• Best local AI for business use
• What its license means

Change history

• Oct 16, 2026 New model DeepSeek V4.1 Flash: Added DeepSeek V4.1 Flash. Multimodal MoE with a 552 billion parameter backbone (about 8B active in prefill, 16B in decode). MIT license; business use allowed. Not a home-computer model.

All changes on the site

Sources we checked

If the maker's page and this page disagree, trust the maker. Tell us what we got wrong.