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>This one is 552B so almost twice that, so the huge gains in benchmark scores make sense - it's not really flash anymore, imo.

It uses fewer active parameters, though. (8B or 14B instead of always 13B)

So ... flash indeed.

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200B of those 552B is PLE, which works more like a database that is read for each token, thus can be offloaded to a fast SSD.
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Id love an ELI5 for PLE. Im trying to work it into my back of the napikin math for compute vs memory bandwidth limitations on tok/s in PP vs TG work.

My attempt at a simplification of this article on it https://sebastianraschka.com/llm-architecture-gallery/per-la... into a couple of sentences is that they are linear embeddings of the input token space projected per layer, which are then gated by the transformer outputs per layer.

This would mean that the only one set of weights for the ple path needs to be pumped across the memory bandwidth as they are the same linear weights for all layers?

Sheit, maybe im trying to simplify something that i need to look at in detail. but id love to leverage others understanding if possible

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> It also includes additional 196B Engram memory which you can put on an SSD. I think

You can put Qwen 3.8 Flash Next engram on SSD, but prompt processing takes a good hit. On my mac studio, I get 300 pp and 33 tg with SSD offload, versus 550/40 with everything in RAM.

I will be very happy if 300 pp is achievable with this model though.

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You can warm cache regularly used engram/n-gram if you're willing to merge PRs into a personal branch and build it yourself. I was trying this with qwen 3.8 flash next and the n-gram to get it to fit on my very average gaming desktop (it worked)
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V4 Flash also was released as mostly FP4, but this one is FP8 (?). 160GB vs 510GB.

Original Flash good fit for dual Spark / Strix Halo machines. This one would require third party quants and even then 4 machines.

Edit: Most of added weights/size are Engrams?

> Overall, DeepSeek-V4.1-Flash has 552B backbone parameters and 196B Engram parameters, activating 8B parameters per token during prefill and 16B during decode.

Those can stay on SSD. So I guess / it possible, that non-engram portion is still FP4 of ~same size! Need to read tech report.

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It's larger than previous V4 Flash.

  552B in ~FP4, 306GB.   
  196B of FP8 Engrams, another 204GB, not necessary to keep in RAM.  
  KV cache sees another 4x size reduction, just 900MB for 1M.  
So 384GB needed for a chance of achieving useful speeds. Three Sparks or quad RTX PRO 6000.
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Or two gorgon halos?
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it is a way bigger model with extra 200B engram so of course the score improves.

can't wait for deepseek v4.1 pro

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