DeepSeek-v4.1-Flash-1017
230 points by theykk 5 hours ago | 91 comments

pmxi 4 hours ago
Hilarious sentence: "DeepSeek-V4.1-Flash-1017 is a minor update to DeepSeek-V4.1-Flash, delivering substantial improvements across reasoning, coding, agentic tasks, and visual benchmarks." (emphasis mine)
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freakynit 4 hours ago
Kinda shows their team is more engineers than marketers.
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boutell 2 hours ago
But with that version number, it's not a "minor" update! It's a patchlevel update! -Engineer
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stavros 2 hours ago
Strictly speaking, it just shows they aren't marketers. Bad copy doesn't tell us anything about their engineering skill.
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Derelicte 33 minutes ago
It's not a bad copy, or at least that's not what the person you responded to is insinuating.

Deepseep-v4.1-Flash-1017 is a minor update. A major update is something like Deepseek-v5-Flash.

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nchmy 2 hours ago
Strictly speaking, they didn't say anything about their engineering skill
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jaynetics 4 hours ago
It's not really contradictory, minor changes can have major effects.
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mdp2021 4 hours ago
So they meant a "small" update - "conservative", "inexpensive"...

An example when using a less frequent term actually reduces specificity.

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cardboard9926 3 hours ago
Hoping it's minor relative to what's coming
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nkmnz 2 hours ago
That's one small step for a man, one giant leap for mankind.
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surgical_fire 3 hours ago
It's a bit refreshing to read updates from an AI lab without bullshit doomerism and overwhelming sense of self-importance from shit like OpenAI and Claude.

Also, DS is an excellent model.

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fivedogit 2 hours ago
I'm at 1 trying to get to 10. I move to 2. Minor update. 100% improvement towards goal.

These are not mutually exclusive.

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ReptileMan 4 hours ago
That is how exponential functions work. Improve every aspect of a system with 1% and you may get easily 50% more performance.
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vrganj 3 hours ago
It's about playing to two different audiences.

The CCP requires extensive certification for new major releases, to make sure a model doesn't do anything they don't want it to.

To get around this, Chinese labs only bump versions when they have to and usually claim it's a minor update.

Then on the other side, they're obviously trying to market to the tech crowd...

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epolanski 2 hours ago
Source?
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est 47 minutes ago
Everything in China is strictly regulated but loosely enforced. Just take that as a grain of salt
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vrganj 2 hours ago
Drum Tower podcast (from the Economist, paywalled) about Chinese AI.

Would highly recommend it, it's IMO the only serious Western reporting about China.

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tw1984 15 minutes ago
> the only serious Western reporting about China.

as good as Gordon Chang.

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ytxm 4 hours ago
It passed my threshold for not caring to try new models back with DS4, I use it for literally everything. Announcements of new models in the series always feel curious, because it doesn't really feel like there's much left to fix that would improve on what's already there for any task I know of.

It's a bit like obsessing over patch releases of some software after a major upgrade already solved the original problem long ago.

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xiphias2 3 hours ago
I have quite the opposite experience: I can do any concrete coding change with any model, but the intelligence limit just doesn't go through more complex debugging examples.

And then when I try a smart model, like Astra medium and it solves it (I had a firmware bug in my new laptop where I couldn't charge through USB-C) on the first try (altough with a repo already having lots of information about the hardware/firmware/debugging programs/traces), I realize how much time I'm losing on the few examples that the less intelligent models are just not able to debug and solve.

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jck 21 minutes ago
Very cool!

Is your laptop something like framework which has open source firmware?

I(and many other people) have a similar issue with usb-c charging not working consistently. I've been meaning to try one of these new smart models to help me debug the issue.

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KronisLV 3 hours ago
Also they can work in completely new domains, like Astra and Opus 5.5 starting to be able to use something like Blender. Currently they still often do horrible topology and basic UV mistakes, and the animations are really bad, but who knows where they’ll be in 5 years.
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squidbeak 2 hours ago
5 years? Look at the leaps since last November. Since the Spring, even.
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pimeys 3 hours ago
Speed and price. You should try the 4.1 Flash on one of the fast providers. It's pretty crazy how fast this model works, and it's great for iterative software development because you can steer it fast to where you want to go.

https://www.lithosai.com/

https://www.coralbricks.ai/

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swiftcoder 3 hours ago
How are these high-speed providers close to matching the API rates from deepseek?
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pimeys 3 hours ago
Seems that V4.1 Flash is quite cheap to serve. Especially how it implements the cache, meaning the cache pricing can be very low depending on how you implement it in your inference engine.

Depends on your use case. But if you do software development with a harness such as oh-my-pi, your cache rates are probably somewhere above 98%. Coralbricks has free cache reads, meaning it's much cheaper than the Deepseek API rates.

Lithosai is more expensive especially in the ultra tier. It's if you want extremely snappy and fast responses, which is important e.g. for a personal assistant where every second counts.

If you generate a lot of output, you're better off with the Deepseek API rates.

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andrepd 3 hours ago
Where does one even get decent ZDR provider? I'm wary of sending sensitive data but not at a scale where I would build my own machine.
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therealpygon 6 minutes ago
You just search around, or heck, just ask Google for inference providers that are ZDR and whatever else you want. Just make sure to read their terms/privacy and review the security center. You will have to request access if you are wanting to get into the deeper details.

Outside of major players, I believe together.ai, fireworks.ai, and deepinfra.com are, as best as I can tell, US-based (if that matters in your situation) SOC2/HIPPA/ZDR. Each of them offer serverless model hosting with caching, which is going to be the cheapest overall. Most of them also offer private AI deployment which is more expensive but your entirely own instance. Some of them more heavily quantize their models (deepinfra) so take that into your workload considerations. I included deepinfra because they tend to have some the new models sooner than others or have models the others don’t (like mimo). IMO, together > fireworks > deepinfra.

However, you’ll have to keep in mind that for true ZDR you give up caching which increases your inference costs, so it depends on how “Zero” you need the zero to be and on what timeframe. If you just don’t want your data being trained on, normal use is fine imo. If you are working on something actually sensitive (like, because of NDA agreements and such), then they might not be the right choice and you may be looking at more expensive offerings or building a machine.

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ytxm 3 hours ago
Scaleway have DS4. I don't think they call it ZDR, but their framework is very strong https://www.scaleway.com/en/docs/generative-apis/reference-c...
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mdp2021 3 hours ago
> improve on what's already there for any task I know of

What about "good governance"?

Does it have zero hallucinations? Does it reflect thoroughly on every single idea it uses, verifying its solidity?

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mmoustafa 4 hours ago
definitely could use less thinking time and lower token usage, which is what this bump is focused on
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jononor 4 hours ago
Above GLM 5.3, nice! That is a very capable model. I do wish that we will see some smaller "flash" models again though - running this one locally is tough (very costly).
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LaurensBER 4 hours ago
For comparison, close to Opus 5. Far behind Sol 6.1 and Opus 5.5.

Probably a pretty decent model for 90% of the usecases!

I've been doing a lot of hobby work with GLM 5.3 Flash and I can count the amount of times that I need a stronger model on two hands.

I have access to unlimited tokens at works and Opus is great but also often overkill if you know exactly what you need.

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egeozcan 4 hours ago
I use Opus for planning, through API on medium thinking, it doesn't cost anything significant and the rest can be happily done with deepseek or glm flash. Using sol 6.1 for review loops at the end. All running on pi.

A very complex task tends to cost like 10$ max. It's comparable to a subscription with enormous flexibility.

It's a steal.

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cromka 2 hours ago
Honestly, I don't know what people see in Sol 6.1. Opus 5.5 is so much more inteligent, as in proactive, avoiding stupid mistakes, where it contradicts itself, ignores the context. Sol 6.1 has a gold-fish memory, it's as annoying for me to work with as Opus 5 was.
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cjbgkagh 2 hours ago
You can override the context length of Sol to 1M
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joshstrange 15 minutes ago
Without this change I hated Sol and was burning tokens way faster due to all the forced compacting.

Since making this (obscure/hidden) change I enjoy Codex much more.

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minraws 3 hours ago
By next year we will likely see GLM 5.3 level performance in Qwen 4 MoE models that can run on most higher end consumer systems.

I don't think there is a reason to care about any of it, just get a few dollars on a few openrouter or similar platforms and just use the models for now, wait for cheaper models that are good enough for you to become available for your hardware.

Sure you might never see frontier performance on consumer hardware but do you really need that though? Does anyone? And if you ever do just get a 30-day sub for that work, and cancel it.

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Pragmata 4 hours ago
Cant you run it on a pair of DGX spark? Sure it's expensive now, but at the initial retail price that was what, 8k in hardware? Not exactly unachievable
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bashtoni 4 hours ago
No, this is not a small model. I believe 4x Sparks is possible but 4.1 is pretty big for a flash model.

MiMo 2.6 Flash is the most capable model you can currently run on 2x Sparks without resorting to a quantised version of something.

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Pragmata 4 hours ago
I meant quantized. You can get an EXL3 quantized version thats almost the same performance.
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bashtoni 2 hours ago
My experience running quantised models is that they look the same at first but are all noticeably worse once the context size gets beyond anything trivial.
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Pragmata 16 minutes ago
I've tried both 2bpw and 3bpw quants for QWEN3.8 27b, and while i do notice a difference in terms of higher rates of getting stuck in loops, they are both reasonably usable.

Are they as good as opus 5.5? No.

Are they about on par with opus 4.6? Yes.

The long run tasks i run seem to be about the same level of quality, though there are obvious differences in model styles, token budgets, etc....

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dcl 54 minutes ago
Very keen to try this out tonight. What coding harness do people like to use with these models?
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gmbhgmbh 4 hours ago
Thank you deepseek, we are eating good today.
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waximabbax 4 hours ago
Looks very impressive especially considering the price and speed. Let's wait for AA to confirm how well their benchmarks hold up.
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scrollop 2 hours ago
You trust AA since the sol fiasco a month or two ago?
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grosswait 24 minutes ago
What did I miss?
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frail_figure 3 hours ago
Why not just try it yourself?
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viraptor 3 hours ago
It costs money to run serious tests. We're way past the time when you could get an idea of the new model in a couple of tricky prompts. Now I need to compare a whole resulting project to get a clear view. If someone else proves the benchmarks don't hold up in reality, then it saves us further tests.
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vintermann 3 hours ago
I'd never heard of the BabyVision benchmark they do so well on. Pretty interesting stuff:

https://arxiv.org/abs/2601.06521

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handfuloflight 4 hours ago
Is it coming to OpenCode et al?
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kzrdude 3 hours ago
Presumably. The current opencode slug for the model is just 'deepseek-flash' suggesting they will just update that one going forward, not keeping versions in parallel.
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opengears 4 hours ago
and do we know which version runs on opencode at the moment (on the free and on the paid version), is there a way to find out?
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swiftcoder 3 hours ago
The only way I'm aware of is to check their twitter feed. They moved to Deepseek v4.1 flash in September
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opengears 2 hours ago
sure, but which version are they running. they could be running an older revision
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SublimePeace 3 hours ago
[dead]
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risphere 3 hours ago
It's better than GLM 5.3 and Kimi K3 and way cheaper.
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slopinthebag 3 hours ago
that's honestly insane. it's like the go-to for when you don't want to use opus 5.5/sol 6.1
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ngl999 3 hours ago
The go-to is a local model.
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gentlewater 41 minutes ago
Limp-to, maybe.
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nik736 4 hours ago
Those are crazy numbers for a Flash model. Hopefully they can scale what they are doing to 4.1 Pro.
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npn 4 hours ago
So this is the reason for the crash a few days ago.
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dgellow 4 hours ago
What crash?
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npn 3 hours ago
Deepseek servers went unavailable for 5 hours. They compensated that by rewarding the previous week usage as credit though. Pretty nice.
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brador 4 hours ago
Ai/tech stock crash
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sharktheone 2 hours ago
beating K3 and GLM-5.3 is kinda insane
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throwfaraway135 4 hours ago
Another big win for opensource AI.

BTW who would have thought China would be the champion of freedom and opensource in the AI arena, while US is fighting for corporate/government control.

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Dah00n 3 hours ago
Well, at least mostly everyone outside the US.
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ReptileMan 3 hours ago
Anyone that has observed China since the 90s.

There are different types of freedom and China's bet is that as long as they provide enough economic freedom the public will be ok with somewhat restricted social and political one.

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InsideOutSanta 3 hours ago
Yeah, I had a somewhat odd conversation with a Chinese acquaintance last year when she got to talking about how America sees China. Her point was that, "How am I not free? I can do whatever I want, go where I want, buy what I want. I can talk to you and say whatever I want; nobody is here listening to me."

The fact that she can't call Xi "Winnie the Pooh" on Douyin wasn't something that occurred to her, or maybe that she was aware of at all. I didn't ask. I don't like to get into these discussions when I'm in China.

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computerex 2 hours ago
There is no such thing as “free speech” anywhere. It’s all a spectrum and the Americans in particular are indoctrinated. It’s a red herring to distract from the real social issues. People in America have some of the worst healthcare in the world. But hey at least we have “free speech”.
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ngl999 3 hours ago
That's an image China wants the rest of the world to believe. Towards inside it still fits the typical stereotype.
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bashtoni 4 hours ago
"a minor update" they say before showing off benchmarks that display a substantial improvement.
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floooof 4 hours ago
they must've been using this since 2-3 days when it became free again in OpenCode, it's noticeable smarter, beats GLM
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SublimePeace 3 hours ago
[dead]
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m00dy 4 hours ago
We're in a crisis
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ngl999 3 hours ago
Censored, no surprise
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freakynit 4 hours ago
Those benchmarks can't possibly be real, right? Right? <insert padme 4-panel meme here>
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logicchains 4 hours ago
At this rate the frontier labs will be Anthropic and DeepSeek, with OpenAI struggling to keep up.
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A_D_E_P_T 3 hours ago
OpenAI's models -- and even Google's Argon -- have particular niches where they shine. For GPT-6/6.1, it's 3D modeling; Astra is hands-down the best at making .step files, Blender files, etc. For Argon, it's natural language writing and everything that hooks up to Google, e.g. search and maps-based itinerary planning.

Anthropic and DeepSeek (+ GLM) are definitely solving coding, though!

They're all quite different tools.

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Kurtz79 3 hours ago
Artificial Analysis recently released a dedicated 3D benchmark, where Astra lags behind both Opus and Sonnet 5.5 (and yes, open weight models seem to be quite far behind).

https://artificialanalysis.ai/articles/aa-3d

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A_D_E_P_T 3 hours ago
Interesting!

For me it's large files in Blender (in some cases >400MB), mostly, where Astra excels. I gave it a look, but I don't know if the benchmark encompasses that sort of thing.

.step files are simpler pieces of straightforward code, so it makes sense that Opus and Sonnet 5.5 do very well...

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swiftcoder 3 hours ago
its unfortunate they didn't include deepseek in the initial batch of benchmarks
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freakynit 4 hours ago
I believe these are the last sets of super-high-end models available to public (open or closed).. these companies probably will now start to withhold top-of-the-line models for themselves, governments, and their super-high-paying partners only.
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stymaar 4 hours ago
News from a near future:

Here's How Distill APT Used McKinsey's Private Access To Top Anthropic Model To Help The Chinese Keep Up With The Us Top IA Labs Despite Access Restrictions

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A_D_E_P_T 3 hours ago
That hasn't been the way to bet. DeepSeek and the other Chinese firms show no signs of slowing down, so if OAI and Anthropic halt releases and "pace the frontier" they'll just fall behind. (And there's a chance that high-end AI will become fully commoditized, which suits DeepSeek just fine.)

Besides, Fable 5.5 is reportedly releasing within the next few days, probably on Tuesday...

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girvo 2 hours ago
China just announced tightened export controls on AI models, for what it's worth.
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ReptileMan 4 hours ago
We have the weights, we have the papers, nothing preventing development on this foundation.
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slopinthebag 4 hours ago
idk, sol 6.1 is both cheap and capable. i've been using it exclusively, i don't need to care about usage, and it's really smart.

yes maybe opus 5.5 is stronger and flash is cheaper, but 6.1 strikes a good balance imo.

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computerex 2 hours ago
OpenAI models don’t come close to competing with deepseek in cost quality ratio. I have a $20 plus plan and I run out of my 5h limit in literal minutes, every tick of the harness is like 10% of my 5h limit.

You can in contrast get far more done with $20 worth of deepseek api spend. No comparison.

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ReptileMan 4 hours ago
i have a feeling that Sol is just Astra low, but with lowest possible priority on the compute.
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WASDx 3 hours ago
I believe it's Astra quantized. It was briefly named astra-lite.
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