Hacker News

Top stories

Live mirror
30 storiesupdated just nowView source snapshot
  1. One Year of Sponsored Servo Development(servo.org ↗)
    65comments
  2. Neovim have a ~$800k Bitcoin donation sitting untouched since 2023
    37comments
  3. Nvidia announces native GPU programming in Rust(nvidia.com ↗)
    308comments
  4. Better Vector Search for Long Documents: Chunking Inside Manticore Search(manticoresearch.com ↗)
    1comments
  5. My temporary PHP fix from 2014 has nearly 20M installs. Today I'm deprecating it(jakeasmith.com ↗)
    42comments
  6. Keys Not Included: recovering the signing keys for US driver's license barcodes(ryan.science ↗)
    74comments
  7. The Relation Between Mathematics and Physics by Paul Dirac(cam.ac.uk ↗)
    25comments
  8. GLM Built Its Own Inference Infrastructure(z.ai ↗)
    89comments
  9. Training a 4B model to produce 81% faster query plans than Postgres(rohanbansal.com ↗)
    121comments
  10. Xiaomi Mimo 2.6 live post-training dashboard(xiaomi.com ↗)
    134comments
  11. Online Z3 Guide(microsoft.github.io ↗)
    6comments
  12. Lucasart's Afterlife(togameforlife.wordpress.com ↗)
    18comments
  13. Small programming tricks(will-keleher.com ↗)
    251comments
  14. Comparison of Malloc() Algorithms(egbert.net ↗)
    21comments
  15. Breaking the 1.58-bit Barrier for Ternary LLMs(arxiv.org ↗)
    33comments
  16. Cloudflare/Security-Audit-Skill(github.com/cloudflare ↗)
    17comments
  17. An Archive of Colour Gradients(shef.ac.uk ↗)
    2comments
  18. Developing provably correct Rust code with Verus(amazon.science ↗)
    23comments
  19. Show HN: An e-ink frame that hears birds and draws them as 1800s illustrations(github.com/arnegiacomo ↗)
    245comments
  20. Backups Aren't Simple(filipovski.net ↗)
    169comments
  21. A 32-year-old bug walks into a Telnet server(watchtowr.com ↗)
    30comments
  22. PCB is brought to you by Fable 5(a6mzero.com ↗)
    59comments
  23. HarnessTax: How Much Does the Harness Matter for Coding Agents?(harnesstax.github.io ↗)
    56comments
  24. CCC invites all model citizens to 40C3(ccc.de ↗)
    discuss
  25. The engineering behind the US Strategic Petroleum Reserve(johnjwang.com ↗)
    90comments
  26. AWS says it can't restore some data from mideast facilities struck by Iran(wsj.com ↗)
    374comments
  27. Performance Improvements in .NET 11(devblogs.microsoft.com/dotnet ↗)
    82comments
  28. OpenAI Model Misalignment Report(openai.com ↗)
    55comments
  29. Japan's book scene is moving from bookstores to libraries(untranslatedjp.substack.com ↗)
    85comments
  30. The Return of Sail Power: Cargo Ships Are Turning Back to the Wind(gcaptain.com ↗)
    76comments

GLM Built Its Own Inference Infrastructure

122 pointsby 4h agoz.ai
66 comments
2h agoHN ↗

We built a complete production-grade inference service from scratch on a cluster of more than 100,000 Chinese-made AI accelerators. All production inference for GLM-5.3-Flash runs on this system.

1h agoHN ↗

Most of the people had kinda guessed this when they decided to provide 100 trillion tokens for free.

2h agoHN ↗

I was gonna ask how people found their coding plans, and realized, have they massively ramped up the prices? Seems the middle plan is ~$80/month now, didn't that used to be like $20/month? Cheapest plan is ~$20/month currently.

They must have hit really hard scaling limits if the prices were hiked so much so quickly.

2h agoHN ↗

Yeah it went from a great deal to unviable compared to other providers imo. They really need to find a healthy middle ground

2h agoHN ↗

It just gives a taste of what we are all going to have to pay soon, once the model providers actually have to make money. And the era of "let's charge a dollar for every 10 dollars running the infra actually costs" is rapidly coming to an end.

And you can bet GLM is still ridiculously subsidized, just not as ridiculously as Anthropic and OpenAI.

1h agoHN ↗

This isn't true, you can pay for GLM 5.3 from a provider like Neuralwatt or Friendli who have no incentive to subsidize or loss-lead their inference APIs

1h agoHN ↗

This introduces other incentives to cut corners and over-quantize.

2h agoHN ↗

It's hard to know, since no one advertises the actual token limits (partially cause they're prolly complex / adaptive). So it seems much more likely that they just offer different pricing tiers than you're used to. Like, the $80 plan is still ~$80 of subscription quota, regardless of what else is offered.

For [API usage](https://openrouter.ai/z-ai/glm-5.3-flash#providers) they charge a bit more than the very cheapest providers of GLM-5.3-Flash, but not so much that a big price difference would make sense.

2h agoHN ↗

I paid $360 annual for Max plan and currently averaging about 1BN tokens a day with their frontier GLM-5.3 model. This was clearly unsustainable for them and they've dropped this package.

1h agoHN ↗

I also have a legacy pro plan and the only limitation is if you are trying to work in the morning from Europe because you are in the 3x usage overlapping China time but after 12 or so you basically can run it at least for me at least 3 parallel sessions all the time.

1h agoHN ↗

1 billion tokens a day?!! I've done a lot of work these past 2 weeks with GLM-5.3. Like, a lot. And I've just passed 300 million tokens in total.

Can I ask where are you using all those tokens?

37m agoHN ↗

This is such a good video. Instant sub. Next to tech bros, we should also put AI-cringe bros.

1h agoHN ↗

300M for two weeks is surprisingly low. What are you doing that need so few tokens?

1h agoHN ↗

It's not my main model (that would be Fable 5.1 Extra) but it's been doing agent-driven search and optimisation of a cross-trading ranking model (it's for work).

1h agoHN ↗

I would suggest you to hook fable or 5.6 to check it regularly and its work because it gets lost easily on stuff it was not trained on. I'm doing some custom inference engine optimization and it's a workhorse but it can easily lose its way and if you don't recheck it you will get wrong answers in the end.

1h agoHN ↗

Well, there's essentially two major ways to use these models: Pair programming or fully autonomous fire-and-forget code generation. The second strategy needs essentially zero input, so the number of tokens you can blow is practically only limited by API speed.

1h agoHN ↗

That's easy to do with many agents independently told to find bugs in a large codebase.

13m agoHN ↗

I have 3-5 agent harnesses with large context windows working on different applications concurrently.

2h agoHN ↗

You believe any of these companies care about the law? They care about winning and building the self improving AI as quickly as possible.

1h agoHN ↗

I too am sceptical but I’ll take my chances. At least it’s helping the open weights.

1h agoHN ↗

I believe the that the companies who claim to not train on my data are more likely to not train on my data than the companies who refuse to even claim they won't.

Also why Meta gets a +1, just charge less money on the training path.

1h agoHN ↗

I’m not sure that follows. You’re assuming that all those claims have the same weight, without considering the size, jurisdiction, reputation or even the general vibe of the company making that claim.

If you factor that in, then there are clearly different tiers: one you can trust, and one that may well just be saying that to increase market share with little reputational or legal consequences if they are found to be lying.

These are not equal.

52m agoHN ↗

I’m not sure that follows

To be fair, none of us are sure of anything and I think that’s the part that’s most irritating

35m agoHN ↗

It’s more a polite way of saying “that’s crap”

1h agoHN ↗

I was gonna ask how people found their coding plans

Very good - but I'm on a legacy plan. And coming up on a renewal that would put me on the watered down current plan. But with 50% legacy discount think it may be worthwhile. If I go to a competitor I'd be paying market rate.

They must have hit really hard scaling limits if the prices were hiked so much so quickly.

Not really scaling - their plans were initially comically subsidized even more so than what the western providers are doing. More advert for an upstart than commercially priced.

48m agoHN ↗

Way to restrictive in terms of tokens provided. I am on their largest plan, and quickly run into their limits. And that is using it selectively in addition to codex.

2m agoHN ↗

Their plans are still worth it if you use their models. You can see how many tokens you can except to get based on plan here: https://docs.z.ai/devpack/overview#estimated-token-allowance

The max plan will provide ~1,100 USD of GLM-5.3 or ~260 USD of GLM-5.3-flash per month for 168 USD. I can personally attest to these numbers through omp (~97% cache hit rate).

Unless you are able to highly parallelize (your work, you won't be able to hit your hourly or weekly quota using the flash model simply because it's so slow.

They give you ~3x more flash tokens, which maybe comes out to ~2x more actual work after accounting for the extra thinking it does to achieve the same result. The mental model, for not getting angry, is 5.3 is fast mode by default, and you can disable fast mode for 2x the work output at 1/3-1/10th the speed.

They're serving me 5.3 at ~40 tok/s and 5.3-flash at 30 tok/s (according to omp).

2h agoHN ↗

Well, other than the infrastructure they got from illegally routing millions of paying customers' requests through Anthropic's Opus 4.8 in a distillation attack...

2h agoHN ↗

breaking Anthropic TOS and misleading users

1h agoHN ↗

Breaking TOS isn't illegal per se. It just allows for denial of services, and may define terms by which the provider can reclaim costs.

1h agoHN ↗

Are you joking...? Sorry if so! Just in case: It's illegal in both the PRC and the USA.

In the PRC, they[1] leaked tons of national secrets on the PRC's latest AI campaigns, the inner workings of their "opinion monitoring" (read: performative panopticon) and "stability" (read: violent oppression) departments, Chengdu's whole CCTV network, direct-energy weapons plans, espionage activities in Syria to hunt down Uyghur refugees, and god knows what else that Anthropic didn't divulge to us common folk.

In the US, it's very clearly an attempt to rip off a competitor. I'm not sure how else you could possibly see it. Even if you're a distillation fan in general (which A. why and B. plz don't), they did this through a network of Japanese and Signaporean shell accounts, presumably at least some of which were abusing Anthropic's subscription service in a ToS double-whammy, as it would be exorbitantly expensive otherwise. They also had to hack around Anthropic's API to get CoT traces, which seems impossible to explain away as anything innocent.

I've been beating the "China isn't necessarily an enemy, it's gonna take us all to handle AI" drum for literally years, but this attack was just... gross. Gross in scale and gross in arrogance. Not a good sign for the dawning alignment crisis, to say the least :(

TL;DR: Use these services if you want, but know that you're supporting aggressive escalations and companies that very clearly don't give a flying fuck about violating the law, much less your ToS. So... buyer beware, I guess.

[1]: For clarity, Z.ai was not alone in this, nor were they most egregious attack -- Moonshot.ai (kimi) took that coveted prize. DeepSeek was involved, too.

59m agoHN ↗

What does any of this has to do with the legality of distilling Claude?

54m agoHN ↗

Yes, wont somebody please think of the shareholders whose IP had been stolen...

30m agoHN ↗

Source for 1? Are we sure those aren't hallucinations?

29m agoHN ↗

alignment crisis

Alignment is meaningless; as you've noticed, humans aren't all that "morally aligned".

If the tool needs safety measures it should be kept in a safe enclosure like we do with CNC machines, furnaces, and so on.

1h agoHN ↗

That is such a canard, IMO. FWIW, Anthropic and OpenAI encrypt "thinking" token outputs in their models, while Chinese labs don't. If anything, it's more likely that everyone is using open-weight models in their synthetic training data generation pipelines. It's way easier to distill from logits than it is to distill from hard tokens.

https://x.com/EricSimons/status/2099252922098061714

1h agoHN ↗

We weep for Dario, that he had to suffer such a devastating attack against his Terms of Service.

55m agoHN ↗

Eh, even if this was true, then they're merely stealing from thieves. Anthropic did break a ToS or two to get training data themselves.

26m agoHN ↗

Anthropic infringed the copyright of basically every author on the planet: https://www.anthropiccopyrightsettlement.com/

No real reason to respect any terms they might want to impose. Besides, if you want to break TOS, just have an agent do it; "everyone" running these things agrees there's no corporate or moral liability for what your AI does.

1h agoHN ↗

This article left me with one immediate question: "WTF is GLM?".

Honestly, I have no idea what z.ai is either (I'm aware of an AI-enabled editor called Zed, but that's under zed.dev), so it's a bit presumptuous from them to assume that everyone is familiar with their product...

1h agoHN ↗

It's presumptuous for them to assume that a reader of their blog is familiar with their product?

Also I feel like the obvious way to read the very first sentence is that GLM is a language model

As we develop GLM, the model sometimes exhibits capabilities that surprise us

1h agoHN ↗

z.ai is a fairly well known AI lab out of China and their GLM models are probably the most popular outside of Anthropic or OpenAI’s. I don’t think it’s presumptuous for them to not introduce themselves in a post on their own blog, I think you’re just a bit out of the loop here.

1h agoHN ↗

As we develop GLM, the model sometimes exhibits capabilities that surprise us, and even unsettle us.

Come on now

Also, why would they introduce themselves on their own blog?

1h agoHN ↗

A ai model family similar to Codex, Gemini or Claude.

Where GLM-5.3-Flash is the newest "small / fast" model.

1h agoHN ↗

I don't get the outrage. Do you post this kind of stuff on every topic on hackernews that you are not knowledgeable about?

49m agoHN ↗

Maybe my post sounded harsher than I intended, and yeah, it's probably on me that I'm not familiar with GLM. Actually the other major Chinese LLM Kimi does ring a bell, maybe it's because three-letter acronyms are a dime a dozen and annoy me because I'm confronted with them regularly at work too (people at my company seem to love acronyms), but that's obviously on me too...

34m agoHN ↗

It didn't read as harsh. Only unaware and you broadcasted that you don't have the decency to do basic searches.

13m agoHN ↗

Ziphu, aka Z.ai, is the company that makes GLM (a very competitive Chinese LLM).

Why would you be reading their corporate blog posts if you don't even know who they are?!

1h agoHN ↗

Different angle on the same model: the full GLM-5.3 (744B MoE, 4-bit experts, 434 GB on disk) runs on a single MacBook Pro M5 Max with 128 GB by streaming the experts from NVMe SSDs instead of keeping them in memory.

One drive gives about 2 tok/s; striped across four drives it reaches 3.5 tok/s with byte-identical output, and our best internal build with a not-yet-published patch does 4.2.

Method and numbers: https://github.com/argonautlabsai/argodrive (built on antirez/ds4).

1h agoHN ↗

seems unusably slow, and is this for short context?

1h agoHN ↗

Interesting that the tone of announcements between US and Chinese providers is converging.

GLM has in the past been more technical rather than speculation about future development on RSI etc.

Also curious whether those 100k accelerators are entirely locally made. If that's genuinely end to end on all components including lithography, memory, design etc then that is quite a feat.

1h agoHN ↗

Any details on the latest approach to distillation would also be very interesting.

17m agoHN ↗

Ziphu (who make GLM) use Huawei Ascend processors made by SMIC. Huawei use a combination of domestic memory from CXMT and leftover (pre-sanctions) memory from Samsung.

Just like the rest of the world, including the US (Intel, Micron), SMIC are currently using ASML lithography equipment (DUV, not EUV), but Shanghai Aishengna are now moving into early production with their own DUV machines, with SMIC and CXMT as early customers.

There is also a state sponsored Chinese EUV development underway.

56m agoHN ↗

Necessity is the mother of invention. The shortsighted protections put on chips, etc., by the US has forced Chinese AI industry to adapt or die. Guess what their response to this fitness function has been? Kudos to Z.ai on their inventions and excellent write-up, which reads like humans wrote it.

6m agoHN ↗

Wouldn't it be refreshing if OpenAI and Anthropic were this open, and spelled out how they were using their own models during development and rollout?!

All I can recall reading from OpenAI about what they have actually done in the name of "RSI" is using one of their models to help automate the training process.

17m agoHN ↗

US chip export restrictions may actually be an advantage for China's AI Infrastructure. Chinese companies are forced to speed up developing their own AI chips

10m agoHN ↗

I might be missing something but when I went to their site they are more expensive than Claude. Why would I pick GLM over Claude? Is it they just offer more tokens in their plans?

5m agoHN ↗

For one you would have to use Claude if you pick it. But seriously there is no way for you to determine if one is a better offer than the other, when the usage/tokens/credits are vague, detached, and won't tell you much without trying both.