Probably because anthropic is pouring $40 million dollars into a political pact to regulate models. And they have not been quiet about wanting to ban/regulate OSS models either.
I have no idea why HN still treats them like ~their~ they are the ethical good guy.
Edit: I can’t English. At least we know this came from my dumb swishy brain
The Chinese open models are way ahead, not by how capable they are compared to frontier models, but on how they project to the world and how they improve over time.
Have ChatGPT 5.6 talk to itself to produce 5.7 or whatever?
And since they already know which requests came from China or looked like distillation, can't they just replay those same prompts?
Predictable power play by corporate strategy and legal departments.
remember when bitcoin got its first dedicated hardware, will be like that
The oddly reminds me of back in the day when SOPA had caused a similar stir (https://en.wikipedia.org/wiki/Stop_Online_Piracy_Act), and all HN was up in arms against it.
Startup founders urge U.S. government not to shut off Chinese open weight AI - https://news.ycombinator.com/item?id=49023016 - July 2026 (841 comments)
Also related:
OpenAI and Anthropic unite against open-weight AI risks to their bottom line - https://news.ycombinator.com/item?id=49020868 - July 2026 (330 comments)
China’s open-weights AI strategy is winning - https://news.ycombinator.com/item?id=48979269 - July 2026 (932 comments)
The gap between open weights LLMs and closed source LLMs - https://news.ycombinator.com/item?id=48692058 - June 2026 (250 comments)
The unbearable cheapness of open weight models - https://news.ycombinator.com/item?id=48668255 - June 2026 (186 comments)
This is the correct stance, hopefully this is the stance that prevails.
It makes sense to see Meta, the startups, and the VC firms on this list. And it makes sense to see OpenAI, Anthropic, and Google all missing. Microsoft is somewhat unexpected to me. I don't think of them as having a focus on open weight models (no more than Google), and they have a large stake in OpenAI. Maybe they're looking at this from the angle of Azure providing compute. But then why is Amazon missing, when it has AWS?
And of course, we don't see DeepSeek, Moonshot, or Z.ai on here. The letter is about American technological leadership after all. But then we _do_ see the French company Mistral! Mistral who released [a playbook](https://europe.mistral.ai/) for Europe becoming a self-reliant AI powerhouse.
I assume all of this is in the context of influencing the Trump administration's thinking on Chinese open weights models. But the letter is really about _American_ open weights models. The call to action is all about keeping the American open weights ecosystem competitive. I didn't even realize that was under threat, so I feel like I'm missing something.
So the closed model try to get client with their model by saying it's cheaper than employees, and then turn around to lawyer-out cheaper alternative?
Truly the american dream.
Start with the outcome you believe will be the most in line with the spirit and traditions of the open source community. This is precisely what won't happen.
It won't necessarily be the inverse. It could be, of course, but it's also likely to be a compromise between the two.
For a topical example: The companies doing "AI" layoffs aren't doing so out of a sense of having failed their staff that helped carry them so far. Often, these announcements come on the heels of record-breaking profits. They're doing it out of contempt for workers.
See https://www.cnet.com/tech/services-and-software/cory-doctoro... for Doctorow's take on centaurs vs. reverse centaurs. Broadly speaking: C-suite business leadership wants reverse centaurs. Workers want centaurs. Unless you have a union (or some other collective bargaining power structure that I'm not aware of), the C-suite calls the shots.
The same can be said of the current administration. They don't give a fuck what most of us want on any given issue. They're captured by an aggressive ideology. Their only incentive is to be able to spin their decision to make themselves look good; to posture as "strong" leadership.
Hey nvidia, what about making your full set of linux drivers open source?
I mean, I do agree that being open is important but you're hijacking the narrative here, and I suspect being open have nothing to do with any of this.
Microsoft, NVIDIA, Meta, Palantir, IBM...They have all been actively hostile to open source for decades, and have a history of embracing it only when convenient and profitable.
Microsoft benefited from its close partnership with OpenAI for years right up until it went sour. Where was this enthusiasm for open weights then?
Meta was developing open models and then abandoned that effort in search for profits. Muse Spark is now fully closed.
All these companies have the resouces to train and release frontier open weights models today, but choose not to. So spare me the marketing and virtue signaling.
https://www.microsoft.com/en-us/corporate-responsibility/top...
Why Kimi? because K3 is the only frontier model I can have a serious conversation with about my product's security.
(I did apply for OpenAi's Cyber Pilot but got no response)
It's also the case that it makes it hard to attract customers if your openweight model is banned. A major reason the likes of Qwen, Kimi, GLM, and Deepseek are popular (well, at least highly talked about) is because of the open weight models they gave away.
If we go down the line of dead internet theory which I’m becoming more convinced of these days, the volume of information that’s not necessarily original or extracted from reality and just interpolated and extrapolated from existing information in different ways by LLMs will greatly outnumber human information coming up.
In which case these models should.. start to converge on the same data I imagine, with slightly different behaviors within that. One big generative orgy feedback loop.
If I were cynical, I'd say it isn't helped by the current US administration.
I don't know that HN usually does. But they did buy a decent amount of publicity by (initially) telling the US government no in using the models for war.
So Nvidia benefits from more inference providers running many Chinese models that they otherwise would not have been able to service.
And as a more general point - more major competitors in a domain is very good for everybody except those competitors themselves, who would rather there be as few as possible.
No wonder openai and anthropic are terrified
Microsoft and Meta are also-rans at this point. Their best hope of catching up is probably leveraging their infra and open models.
Could you elaborate? I don't understand your implication.
Amazon in particular hosts open weight models via Amazon Bedrock (e.g. Ministral 14B 3.0, DeepSeek V3.2, ...)[1].
In case it changes the context of this comment, I am a Meta employee, all opinions are my own.
[1] https://docs.aws.amazon.com/bedrock/latest/userguide/model-c...
The gap is shrinking, but considering their models still lag our frontier, I wouldn't say they "run circles" around us.
Same experience with Anthropic's. I applied for my employer, and.. 0 response.
(a) sellers of hardware (Nvidia, IBM) and those who rent hardware out to others (Amazon, Microsoft)
They want open models because they don't have to license it to run it on their hardware, so they can offer lower cost and inspect what they are offering to clients
(b) open model creators (Arcee, Perplexity, Mistral, IBM, Microsoft)
...who would be unable to work if open-weight models are banned
(c) Software-heavy companies ( Mozilla, The Linux Foundation , ServiceNow, Microsoft, IBM, heck all of them)
...who want models that are cheap to run because that reduces the cost of running an LLM (whether you are trying to replace a software developer or just assist them, the value of a reduced cost LLM is directionally the same)
MS is playing literally all the sides in this whole AI thing. They are a massive investor in oAI, and have lots of rights to use their models for a long time. They also have the cloud where they offer inference w/ all the benefits of already being there, data retention, etc. They also have a research wing that can build models (rumours are they're aiming for frontier-ish). I don't think there's currently an angle in this AI thing that MS hasn't aimed for.
OpenAI and Anthropic can bring American open-weight model providers like Meta to court but not the Chinese. Chinese companies breaking American IP law (whether the law is correct or not) are basically immune. This has been going on forever, I guess enough is at stake finally for the federal government to care.
If I change one weight in Kimi, is it still a Chinese model?
If I fine-tune Kimi on pro-America nationalistic freedom loving anti-Chinese propaganda, is it still a Chinese model?
If I distill Kimi from one server to the next without ever directly transferring any weights, is it still a Chinese model?
If Claude accidentally trains on some of Kimi's output, is Claude then considered to be a Chinese model?
If China's next open-weight model is released secretly through a European company, is it still a Chinese model?
(Grade 3 AI which can hack both previous tiers is exclusively sold to the highest bidder.)
This is wrong IMO. You should have a serious conversation about your products security with someone who is actually trained on that subject. LLMs are useless if you don't already know more about the thing than the LLM, or if you don't care too much about the outcome (internal tools etc.)
Therefore it is no surprise that both companies are among the signatories.
The motivation of Palantir is very transparent, they have launched a product created in cooperation with NVIDIA, which is a turnkey system (Sovereign AI) that includes all hardware (i.e. a rack with servers full of NVIDIA GPUs) and all software needed by a company to run on its premises LLM inference and also training/fine tuning.
Thus the Palantir product competes with OpenAI and Anthropic and it benefits from the existence of open weights LLMs.
The motivation of Microsoft is more obscure for now, but because its criticism was very similar to that of Palantir, about how dangerous it is for corporations to delegate the processing of their AI needs to external entities like OpenAI and Anthropic, I assume that Microsoft is also going to propose an alternative to using remotely the OpenAI and Anthropic APIs.
Unlike Palantir, Microsoft is not likely to suggest self-hosting on premises, but I suppose that they might promote self-hosting on some kind of instances rented from Azure.
AI models don’t really have nationality. They don’t have race/ethnicity fields on their model cards. It’s impossible to determine the country of origin of a model by looking at their weights. There is no DNA test for AIs. They exist in a mathematical space where human-made borders make no sense.
This means IF there is a regulation for open weight models, it has to apply to ALL open weight models. There is no any other option, since you can always train/fine-tune a model to change it’s weights and rebrand it as a new model.
[0] https://en.wikipedia.org/wiki/Export_of_cryptography_from_th...
Is the US planning to invade China and take away their models? Because otherwise China is still going to have the models even if the US bans them. I don't think they're going to be going with the US position on this one.
there's nothing open source about an open weight model. It's more like the binary blobs Linux fought so hard against. If you can't compile, or in this case train, from source then you're missing the "source" part of open source.
A month before the R1 paper came out, they released the Deepseek math paper which described their method for MoE load balancing.
It means Google and Amazon do not care and would not voice their opposition against the government action.
It’s classic commoditize your complement, nobody can replicate the cloud providers, everyone can replicate the models with open weights.
Models are quickly becoming a dumb pipe, like an ISP. Just a commodity. The labs should rightfully be terrified, eventually the value isn't going to come from the model itself but the tools & integrations built on top. Non-tech businesses and non-tech employees don't want to buy API access to a model, they want to buy off the shelf software with its capabilities packaged up into a pretty, easy to use GUI.
It's also not a very good marketing strategy, secure software and quality also goes in pair and it just makes me doubt about the output of Fable/Sol
My point and frustration is that gatekeeping in the name of Security makes the Chinese models actually better at security than USA models.
Yeah, Microsoft wants to sell Azure compute. They also want to sell their upcoming surface ultra hardware with the Nvidia chip in it. They preached hard on "unmetered intelligence" at this year's BUILD conference, went hard on local AI, and Azure Foundry, Windows Foundry Local, etc.
Copilot, both GH and M365, are also made to be model agnostic. Microsoft sells enterprise services and software, they'd prefer (I'm assuming) to not be locked in and dependent on any 1 or 2 model providers and would prefer plenty of options and competition in that space because they can just easily offer a model agnostic harness, integrated with the rest of their stack.
How much of that is organic versus something a agitprop agent is commenting in places like HN would be interesting to know, but people very much talk about that from a nationality perspective.
While your point is valid on its own merits, it isn't relevant here.
i suppose this is part of why openai and anthropic have not been shy about advertising the scarier strains of their models, these past few months; they basically have to force the white house's hand or risk being commoditized among the various other options in a microsoft/openrouter dropdown.
Ungovernable makes intuitive sense, but I don’t understand how open weight models could be decelerationist or slow the development of the frontier. Was there an argument for those positions?
It's why Ukraine and Russia are now using fully autonomous drones. That's the only real solution to jamming.
The other thing that comes to mind is they want to avoid the government from banning open models as has been suggested by some of the closed models providers.
https://windowsforum.com/threads/azure-capacity-crunch-exten...
You can easily see this if you are using LLMs in a field you are an expert in
In other words, if AI models become a commodity, the "AI leaders" will not be able to burn the cash like they do today, thus resulting in a "slower" (one could say instead "more sustainable") development of AI models.
I don't know that the US government has a unified position on open source AI. But it's not like this isn't a discussion happening among policymakers.
Claude Team w/ Cowork still only lets you set R/W permissions globally for each MCP connector for the whole team, they still don't offer config on a per-user basis. The enterprise controls are sorely lacking first party. Maybe fine for most startups or flat orgs, but any established enterprise with strong identity & access governance is going to have an issue with that. You can make it work, but you need to make your own agent/harness and give it an identity in Entra or whatever else you use, so for a non-tech company without a dev team, right back to square one of preferring to just buy a COTS solution vs trying to hand out direct model access with minimal governance.
(M365) Copilot sucks but Microsoft is putting a ton of work into agent governance & identity that sorely lacking elsewhere.
"AI Product" doesn't necessarily mean "We sell API access to a our models." Ton of companies out there itching to buy a commercial off the shelf product to deliver whatever AI capabilities they need packaged in a nice GUI, with enterprise governance controls, without needing a dev team/team of engineers to integrate it or develop harnesses, etc.
Buy it->have IT click a few buttons in an admin console->Deploy and have it be immediately useful is the play.
Even in the US, only about 23% of workers earn $100k/year or more.
According to the US BLS, the median income for "knowledge workers" is ~$65k-$72k/year.
People in SF, NYC, etc. live completely different lives from the rest of the country.
Then will attempting to cutoff China again today work or do we expect that also will prove to achieve the exact opposite of what its proponents are claiming?
You're right, they are not good salaries but they are the reality of wages in the US outside of the SF/NYC bubble.
The entire justification for the AI buildout, and the valuations of all the major AI labs, is that the service will be priced at some significant fraction of the knowledge work it's replacing. If you think it will become commoditized in the future, you are saying these companies are significantly overvalued at present.
The Chinese government didn't like that idea. They attacked American companies, stole the IP, and created their own analogs of American corporate offerings. If you are a company and are targeted by a totalitarian government, it's not unreasonable to pull out of that totalitarian government's jurisdiction.
Honestly, the American response to that was not nearly stout enough. Chinese goods and services had been sold in the US without issue for decades at that point, often to the detriment of both domestic and other international market players. When China was expected to play by those rules and allow American companies to do business in a mostly-unfettered way, they attacked the companies and drove them out of their market.
I do lean toward them being significantly overvalued at present. OpenAI & Anthropic's valuations assume high margin product pricing on raw intelligence itself. Even if assume the labs will start charging value-based pricing, enterprise buyers will pay that pricing to whoever saves them engineering hours to make any cheap model work inside their compliance boundary, no guarantee that's going to be OpenAI or Anthropic.
Microsoft wins either way, proprietary, expensive models or cheap commoditized inference, because they monetize the workflow on top, not the raw intelligence. I also happen to think it's everything "on top" where a lot of value lives. Plenty of non-tech enterprises and companies out there itching for a ClickOps style AI product, especially if they don't have an engineering team, that they can buy off the shelf, meets all the compliance checkboxes, and does what they need without having to build the agents and harnesses themselves with the APIs.

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Nvidia, Microsoft, Meta, Palantir and more than 20 other companies released a letter Friday urging policymakers to avoid "premature restrictions" on open-weight artificial intelligence models that would "stifle competition or drive innovation overseas."
Open-weight AI models are available for users to download, modify and run on their own infrastructure, and they have been the subject of fierce debate within the tech sector in recent weeks.
Chinese open-weight models are gaining steam against leading offerings from American companies like OpenAI and Anthropic, which primarily develop proprietary, closed models. Officials and executives have been weighing whether or not to restrict access to Chinese models in the U.S.
Moonshot AI, a Chinese startup, amplified concerns earlier this month after releasing a model called Kimi K3 that outperforms cutting-edge American offerings across some industry benchmarks. U.S. Treasury Secretary Scott Bessent told CNBC on Tuesday that the Trump administration would look into whether Chinese companies were stealing American intellectual property, and stated that the government has "the ability to sanction them because of this theft."
But in the letter on Friday, the group of U.S. tech companies cautioned against any rash actions. They wrote that open-weight models strengthen competition and ensure that the benefits of the technology are "broadly shared rather than concentrated in a few hands."
"Relying solely on closed models is not inherently safe: they can be breached, misused, or fail in ways that outsiders cannot detect," the letter said. "And concentrating advanced AI capabilities behind a small number of closed models compounds that risk."
Nvidia CEO Jensen Huang and Microsoft CEO Satya Nadella both shared the letter on their personal social media accounts.
Elon Musk, who runs an AI business under his rocket company SpaceX, also applified the letter on social media, writing that it has his "full support" in a post on X. SpaceX did not officially sign the letter.
OpenAI and Anthropic did not sign the letter. Both companies, which are each valued at nearly $1 trillion, are gearing up for potentially massive initial public offerings that could land as soon as this year. Anthropic confidentially filed its prospectus with the Securities and Exchange Commission in June, and OpenAI followed suit days later.
Greg Brockman, OpenAI's president, said Thursday that the company believes in broad access, and that he has not been involved in any conversations with the Trump administration about potentially banning Chinese open-weight models in the U.S.
"I think that, that fundamentally, AI and AI usage is something that is actually very important to democratize," Brockman told reporters during a briefing in New York City. "And so, for me, at a sort of deep level, I think that having more models, more usage, that is a good thing."
OpenAI CEO Sam Altman addressed the letter in a post on X on Friday, writing that he wants the U.S. to win with both open-weight and proprietary models, and that he is "glad to see this."
Earlier this month, the AI company Hugging Face used an open-weight model from the Chinese company Z.ai to contain a cyberattack that rogue OpenAI models carried out. OpenAI disclosed the attack on Tuesday and characterized it as an "unprecedented cyber incident."
CEO of OpenAI Sam Altman speaks with reporters, following meetings on Capitol Hill, in Washington, D.C., U.S., June 3, 2026.
Kylie Cooper | Reuters
Yacine Jernite, head of machine learning at Hugging Face, told CNBC that the company initially tried to use Anthropic's Fable 5 to analyze the attack, but that it didn't work because the model's guardrails couldn't determine that Hugging Face was trying to defend itself.
Jernite said Hugging Face turned to Z.ai's model GLM 5.2, and was able to contain the attack "very quickly using this model."
White House advisor Michael Kratsios on Wednesday said that China's Moonshot AI developed its Kimi K3 model by distilling Anthropic's technology. Distillation is a term for an AI training method where a smaller, less capable model is built using outputs from an existing, stronger model.
Kratsios wrote in a post on X that legitimate AI distillation plays a vital role in the open innovation ecosystem, but warned that "large-scale, covert industrial distillation aimed at stealing proprietary U.S. technology" is "unacceptable."
In the letter on Friday, the U.S. tech companies said that concerns about unlawful distillation should be addressed through "targeted legal and commercial frameworks" instead of with "sweeping restrictions on techniques that play an important role in AI innovation."
"Our AI leadership will be judged not by one frontier AI model, but by whether the United States builds a strong, open ecosystem that diffuses into every sector," the letter said. "This is essential for creating opportunities for innovation and prosperity across the country."
WATCH: AI is forcing the cyber industry to revisualize how it operates, says TrustedSec’s David Kennedy

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