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Posted by Liwink 4 hours ago

DeepSeek v4.1 Flash(twitter.com)
https://huggingface.co/deepseek-ai/DeepSeek-V4.1-Flash
354 points | 152 commentspage 2
swiftcoder 1 hour ago|
OpenCode Go is currently running a 4x usage promo on DeepSeek v4.1 flash, not a bad way to get your feet wet (even if their cache hit prices are probably still very sub-optimal)
cdnsteve 1 hour ago|
Hit me up if anyone wants extra $5 free usage with my referral code
RockstarSprain 1 hour ago||
Never tried OpenCode Go so I am interested. How does their pricing compare to paying DeepSeek directly, by the way?
cdnsteve 53 minutes ago||
They have flat fees, so it's the best deal around by far. Basically for $5 first month then $10/mo after that. If you're doing tons of heavy work, it struggles because they throttle the model inference and for good reason. I mean it's cheap! But if you want a place to try models for nearly nothing and aren't doing 6 sessions in parallel it works fine.
swiftcoder 27 minutes ago||
Yeah, I’ve rarely seen throttling unless fanning out to a ton of agents
DavCreator 3 hours ago||
https://xxcancel.com/deepseek_ai/status/2097930608790167907
jimmyl02 3 hours ago||
The architecture changes and systems improvements being brought into LLMs is so awesome to see. It really feels like this is now a systems problem where a defined goal is set then systems optimizations are made around the model architecture to solve it.

Underlying it all is that any architecture can be trained to the same convergence just difference in compute utilization both in training and inference

bhouston 3 hours ago|
Yes, this is called RSI, e.g. recursive self-improvement. It is the current stage of things and it is part of a hard takeoff.
Tomte 3 hours ago||
If only they managed to tell the mobile app to tell the model to reply in English to English prompts.

I suffix everything with "Reply in English", and even so I‘m getting lots of Chinese.

danielspace23 2 hours ago||
I think their system prompt is in Chinese and probably has instructions to prioritize answering in Chinese, since this has never happened to me via API, where I (or the coding harness) set the system prompt.
monster_truck 2 hours ago|||
I just started learning Chinese instead, like they want us to

seriously

orbital-decay 2 hours ago||
English isn't the first language for me as well so I don't see any problem with that
Grimblewald 3 hours ago|||
I'm starting to have chinese characters bleed into claude as well. Perhaps a sign of the times. Understanable for a chinese first model but an english first (supposedly) model? wild stuff.
donquichotte 2 hours ago||
I also love the gaslighting of some models, like ChatGPT mixing in words with cyrillic letters and when asked about it answers: "it can look as Slavic to the eye" and "sorry that it came across as Russian"
calgoo 2 hours ago|||
Yes, this is one of the few issues with Deepseek; their chat pages and the app all respond in Chinese. However, i think i have only had it happen once when using the API, and im using it for hours each day for the last... couple of months?
SSLy 1 hour ago||
last couple of weeks, before they've unified instant and expert the former always replied in chinese unless steered, expert was by default english
sschueller 2 hours ago|||
Same issue on desktop. Would be nice be able to set a prefix or postfix for every prompt.
Markoff 1 hour ago|||
nothing to do with mobile app, I have same issues while using it on desktop browser, it will never remember to use English permanently, even within one conversation
ignoramous 2 hours ago||
I occassionally get Chinese characters interlaced with English in Google AI Mode, too.
Alifatisk 1 hour ago||
> New Causal Encoder–Decoder architecture: just 8B active parameters for input, 16B for output.

Oh interesting, I can assume what the benefits is for including the Encoder, but whats the downside? I’m thinking GPT (which is decoder only) ruled out Encoder for a reason?

Alpha3031 1 hour ago|
Enc-decs are usually harder to train at frontier scale. Not 100% sure what DeepSeek has done differently here initial read seems to be something related to layer reuse but I just skimmed things so far.
walrus01 2 hours ago||
Looking at the huggingface page, the unsloth people haven't finished quantizing it yet, but I'm sure they're active on it right now. It'll be interesting to see how the capabilities and benchmark tests compare on system where it can fit in under 512GB of RAM with full context.

In terms of coding and command line capabilities I'm also very interested to see a head-to-head of it vs. qwen 3.8-flash-next Q8 which is something like 190GB of memory used when loaded into llama-server. It fits very well in all sorts of 256GB or under class machines.

lionkor 3 hours ago||
I'm a big fan of DeepSeek. Also, ask it what model it is :)

In Pi (pi.dev), it tells me it's definitely Claude by Anthropic, via the API via curl it tells me it's "probably ChatGPT", its very funny.

Mashimo 1 hour ago||
Works correctly in opencode, but seems like they inject a system prompt:

Thinking: > The user is asking what model I am. According to my system prompt, I'm powered by "deepseek-flash" with model ID "opencode-go/deepseek-flash".

>I'm powered by the model opencode-go/deepseek-flash.

shunia_huang 1 hour ago||
Definitely not Claude, deepseek is too fast, so I bet it's ChatGPT. :P
siomek 1 hour ago||
[dead]
k__ 3 hours ago||
So, while the throughput was 400-500tps in beta its now ~150tps on OpenRouter.

I was hoping for a bit more, but it's still 100% faster for a very good price, so I won't complain.

gosolozero 3 hours ago|
First flash model with multimodal support? I think Flash series might be the main focus going forward for them. Tried it out and it’s better than v4 pro
lionkor 3 hours ago||
v4 pro is being discontinued, pasted the email here: https://news.ycombinator.com/item?id=49639667
thefossguy69 1 hour ago||
Makes sense. The 0731 snapshot of V4-Flash really made reaching out to Claude really infrequent for me.
arjie 1 hour ago||
No. DSv4-Flash-Vision-Exp is what I use and it has vision.
viktorcode 59 minutes ago||
It is now redirected to Flash v4.1
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