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Anthropic S-1

1600 points • by SiNTEx • yesterday at 1:04 PM • 1534 comments • view on HN

Comments

trjordan • yesterday at 1:23 PM

Everything comes back to whether the demand is really there.

Anthropic thinks it is. The got the demand / datacenter match right in Q2, got great margins, and committed hard.

They've got:

- $114b committed to Google

- $110b committed to AWS

- $161b committed to Broadcom

- $120b committed to SpaceX

If the party continues, they'll go from $50b in revenue to $500b and be fine.

But if they don't, it's going to hurt. And that's their only choice, because otherwise, they end up with a frontier model and 50% of the capacity and get eviscerated on either availability or last-minute datacenter leases.

It's a big business, but it's not an easy business.

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gradus_ad • yesterday at 2:59 PM

The killer app is AI coding. Claude Code had first mover advantage, was a genuine revolution, and has diffused through the industry with incredible speed. I would imagine most of the huge revenue increase over the last year is due almost entirely to AI coding spend.

There are three issues with this. First, the rapid diffusion of the technology means it is very unlikely to continue at the rate of adoption seen over the past year, so it's very hard to extrapolate based on what we've seen so far. Second, many companies are reigning in AI budgets after an initial honeymoon phase. Third, all of the other labs are trying to take a bite of the coding pie, and the price war is already heating up.

Add these simple dynamics up and it makes perfect sense why Anthropic would want to IPO now. Things look about as good as they ever will.

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jialatsia • yesterday at 1:15 PM

Ant generates $2.08 in revenue for every $1 spent on compute which is up from just $0.40 in Q1 2025.the payback period for compute is just insane, likely less than a year!

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vhiremath4 • yesterday at 9:01 PM

There are three mentions of “open source” and none of them mention open source models as a fundamental risk to their business. Interesting.

UPDATE: seems like it is under "open-source" and "open-weight". Woops. Will keep this up simply because I do think the OS (and infra-managed OS services) provided by Chinese labs is a considerable risk to the underlying business, at least with enterprise R&D.

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tecleandor • yesterday at 1:16 PM

From the "Risk factors" section:

> If the use of our AI models results in harm, whether through use by malicious actors or misuse by other third parties, or if our model guardrails or safeguards fail to prevent such misuse, our reputation and brand, business, financial condition, and results of operations could be adversely affected.

That shouldn't be an 'if'.

Then, two paragraphs later...

> For example, in September 2025, we detected and assessed with high confidence that a Chinese state-sponsored hacking group manipulated our Claude Code tool into attempting infiltration into roughly 30 global targets...

But they should mention when the calls com from inside the house. :D

Interesting to review all the mentions to China and Taiwan too.

> The majority of the world’s most advanced chip manufacturing capacity is concentrated in Taiwan, primarily at Taiwan Semiconductor Manufacturing Company [...] potential disruption from geopolitical tensions between Taiwan and China [...] Efforts to establish sufficient advanced chip manufacturing capacity outside of Taiwan, including in the United States, remain in early stages...

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informal007 • yesterday at 4:47 PM

| Quarter | Revenue (USD billions) | QoQ Growth |

| Q1 2026 | 4.731 | +131.9% |

| Q2 2026 | 11.555 | +144.1% |

| Q3 2026 | 16.800 | +45.4% |

The growth rate slowed in the latest quarter, which I think is why they decided to go public now.

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npilk • yesterday at 1:34 PM

So at the moment they claim to be making an operating profit if you exclude:

- Stock-based compensation expenses

- Non-cash charitable contribution expenses

Both seem fairly reasonable to exclude (although it depends how much of the stock compensation is for executives... you can't necessarily pay people with stock forever).

FMost of the loss is non-operating losses, and it all seems to be weird accounting recognition of changes in value of their stock, SAFEs, etc. - just "paper" losses.

So the financial picture looks a lot better than I would have guessed - I suppose because they aren't the ones investing all this capex.

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deepwoods • yesterday at 1:41 PM

About a quarter of Anthropic's revenue for the nine months ended 9/30/26 came from just five customers. That's not an absurd concentration, but I would be very interested to know who they are and how mobile their business is. From a financial perspective, the lack of moat seems like the whole ballgame, particularly because they're getting ~80% of their revenue from consumption-based spending.

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billylo • yesterday at 2:45 PM

A different picture if you include Q3 data in their chart.

https://x.com/billylo/status/2114730642881544285?s=20

Q3 data from their pre-IPO investor roadshow.

Dealroom / Wall Street Journal on Q3 data https://dealroom.co/news/164610-anthropics-draft-s-1-reveals...

Bloomberg reported the same data. https://qz.com/anthropic-q3-revenue-adjusted-profit-ipo-inve...

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jhylau • yesterday at 11:20 PM

lets' just say there’s a lot of ways to hide things. primarily they have issued a lot of convertible notes /stocks to the people supplying their compute, which is not counted as costs of compute. There are also a lot of way to shove costs into sales and marketing - i.e. any free tier stuff given away to users are not counted in gross margins. their q3 numbers also not there. smells like they are desperate to get this thing out.

variety8675 • yesterday at 1:26 PM

> there can be no assurance that we will be able to hire sufficient support personnel as and when needed, particularly if our sales exceed our internal forecasts

Why would they need support personnel? Isn't their whole point that Claude can do that

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prolly97 • yesterday at 1:12 PM

Adding a zero to revenue every year is wild. Regardless of whether you like Anthropic.

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alkonaut • yesterday at 1:21 PM

I'm just happy they aren't calling it "Super intelligence" in this document.

kikdij • yesterday at 1:42 PM

For those who are not familiar with S-1: this document is incredibly important. this is one of the rare times in the life of a company where it's not allowed, by law, to lie, nor to omit the truth.

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jmuguy • yesterday at 5:58 PM

My main thing is - why would I buy their stock at the rumored valuation? Regardless of anything else that valuation is basically saying all their growth has been captured, unless they literally take over the world.

If you could go back in time and buy $1000 worth of Amazon when they IPO'd, it would be worth 3.3 million today. Because Amazon's stock value has grown on average 30% year over year for 30 years. Amazon's valuation when they went public was around 400 million.

How much can Anthropic reasonably grow from a 1.5 or 2 trillion dollar valuation? If we want them to grow even half as much as Amazon they'd have to be worth 5.9 quadrillion dollars by 2056. That's 5,900,000,000,000,000, a 16 digit number.

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afavour • yesterday at 1:55 PM

Feels like being asked to invest in IBM just as other manufacturers started releasing the first PC compatible machines.

Immediate term Anthropic, OpenAI rule the roost. But this is a very new technology and open models are already looking good. They’ll only get better. Is it realistic to think Anthropic will stay ahead of them enough to justify the valuation they’re asking for?

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int32_64 • yesterday at 2:59 PM

"If we fail to adequately protect our intellectual property rights, our competitive position may be impaired, and we may lose valuable assets, generate reduced revenue, and incur costly litigation to protect our rights, which may adversely affect our business, financial condition, and results of operations."

We scraped the entire internet but our business might not be viable if we get scraped too.

"We incorporate open-source software in our models, platform, and applications, which may subject us to litigation or other requirements, each of which may adversely affect our business, financial condition, and results of operations."

We violated GPL.

"We may be subject to claims that we or our employees have misappropriated the intellectual property of other companies, particularly as we hire employees from other AI and technology companies."

We sniped employees from other labs that brought over IP.

The whole risk section is insane frankly.

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ipozgaj • yesterday at 7:31 PM

At this valuation this is a very risky investment because the current price already accounts for future growth, so there is very little margin for safety or meaningful upside left. The sole purpose of this IPO is for early investors and employees to cash out. I wouldn't touch this stock with a 10 foot pole.

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joduplessis • yesterday at 5:51 PM

This feels like a stupid investment given it's autocratic quasi-religious undertones, on top of diminishing product differentiation.

toephu2 • today at 1:46 AM

Dario Amodei owns approximately 1.4% of Anthropic.

Anthropic valuation → Dario's estimated stake (1.42%)

$1 trillion → $14.2 billion

$1.5 trillion → $21.3 billion

$2 trillion → $28.4 billion

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apexalpha • yesterday at 7:29 PM

I really struggle to see this company make this amount of money when Deekseek runs on a Apple Mac Studio I can just buy.

Or any hardware, really.

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turbobutton • yesterday at 1:22 PM

I wonder if we're already close to peak value at the foundation model/API level. With so many good open-weight models out there, I think more and more of the money will end up in the applications built on top. Unless companies like Anthropic can move into that space, I'm not sure I'd bet on them as long-term investments over the next 10–20 years.

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tilltheend • yesterday at 7:55 PM

>Anthropic employees and early investors will be able to sell their shares on the first day the AI firm begins trading, followed by several scheduled dates in which IPO lock-ups expire. This phased approach deviates from the traditional IPO process, in which insiders are unable to sell their shares for 180 days following a company’s Wall Street debut.

>Under Anthropic’s staggered lock-up schedule, workers and insiders will be able to sell an unspecified number of Class A shares as time passes after the debut. The lock-ups open 27, 48, 62, and 76 days following the IPO, the filing explained.

rich_sasha • yesterday at 1:32 PM

One thing that bothers me is that if the AI maximalism turns out correct (which is needed to justify the valuations), why would AI companies respect money and ownership?

So far, even major disruptions were still affecting relatively small segments of the economy. Car lobby in Germany, tech in the US, "Big Pharma/Food/etc”. They needed the rest of the economy.

But if some AI company figures out a way to monopolize everything: new companies, old companies, physical manufacturing - all the things they say they will, please buy here for lots of money - why would they be bound to pay out dividends or otherwise share the fruits of their economic labour?

I’m not saying specifically Anthropic would be looking to screw its investors. Rather, if you control an almost omnipotent genie, wouldn’t the temptation just be too much?

Or temptation aside - will money even have any value? If some AI company rebuilds the economy from scratch, and control everything from accounting to shoe making, why would they respect the value of some fiat tokens? It’d be like the conquistadors respecting the shells and beads of their new Aztec subjects.

Of course, perhaps none of this happens, but then the question is, how good an investment all of this even is.

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wesm • yesterday at 2:37 PM

The biggest question mark here for me is how much third party compute has been contributed in exchange for Anthropic equity. This has the effect of making Anthropic's compute spending look a lot lower than it actually is. Anthropic gets a revenue share on that third party compute spend (or gets to do training runs without spending cash), the third party gets shares in return.

LarsDu88 • yesterday at 4:22 PM

I think a lot of discussion around the sucess or failure of Anthropic and OpenAI seems to hinge on their current uses, but people seem to have amnesia regarding the fact that Claude code wasn't even a thing until about 1 year ago. There are far wider markets these companies can tap on if they are well capitalized even as Chinese "actually open AI" commoditizes things.

There are moonshot projects related to superconductors, materials, and biology that these companies can claim progress on to keep valuations stratospheric.

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mrboatshoepants • yesterday at 3:44 PM

Anthropic is committed to $780-810 billion of mostly non-cancelable compute, payable "regardless of actual usage."

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simoncion • yesterday at 11:20 PM

The fun thing about this is even if you ignore the SAFE & etc fair value changes, Anthropic still lost ~8 billion in 1H 2026.

Given that their Q3 sales numbers didn't grow by much, and that if they can't get Congress to both order a halt to the production of new LLM-based tools and either tightly restrict "open weights" models or make them illegal [0], they're going to have the dual squeeze of the ever-increasing R&D costs needed to build the next big LLM-based tool and ever-reducing revenue as more and more businesses notice that they get decent results with something they can host on-prem... and the only cost to the business is hardware that they may or may not already have and the power that they're likely to be already paying for.

[0] ...illegal because "China Bad And Scary", naturally...

baq • yesterday at 1:32 PM

Amount of early money waiting to exit is absolutely staggering, wonder if there’s enough retail to buy the leftovers without crashing the price. Reminder everyone with money who wanted in before IPO got in!

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anotherengineer • yesterday at 1:15 PM

Really wonder how their public benefit mission will align with the expectations to maximize shareholder returns

I want to be optimistic, but I just can’t imagine the public benefit mission winning out in the market

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javier123454321 • yesterday at 2:51 PM

Funny that they don't mention their publicly stated fear that AI has ~10% of wiping out humanity in their AI risks section.

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akie • yesterday at 1:34 PM

This is it, we're at the summit. It's only downhill from here.

6thbit • yesterday at 4:30 PM

  > We believe the work that knowledge workers perform represented more than $40 trillion (in 2025)
  (...)our near-term opportunity is to expand this value
  ...investment in AI (...) will yield a cumulative global economic impact of $22.5 trillion by 2031
  We believe the impact could be even greater.
While they don't seem to explicitly mention total addressable market (TAM) Is that their way of saying their TAM sits somewhere between 22.5 and 40 T?
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epsteingpt • yesterday at 1:12 PM

$81B net loss in first 6 months of 2026 alone. Linked discussion: https://news.ycombinator.com/item?id=50243002

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aabajian • yesterday at 5:28 PM

Can anyone answer me: What is the hardware cost to run a single instance of a frontier model? I've heard everything from $25K to $3M.

I think it comes down to: Will the hardware cost for frontier models come down?

Also, here's a business idea: Web crawler for open weight models. You just pay a monthly fee so that your home model can continuously update on a large web crawl each hour/day.

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adverbly • yesterday at 3:15 PM

Not a great look they they can't correctly generate a PDF that renders without text overflowing and overlapping.

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cmiles8 • yesterday at 1:43 PM

There are a lot of parallels to the WeWork S1. They’ve made absolutely massive forward cash commitments, on a business that’s increasingly commoditized, and with little hard evidence that they’ll generate the revenue (let alone the cashflow) to pay for all these future liabilities. All while everyone is discovering there isn’t really a secret sauce moat to demand much of a a premium over cheaper options that trade a few points above the direct COGS (cost of compute in this case).

If everything goes just perfect they might eek by. If it doesn’t this goes from high flying startup to insolvency and bankruptcy real fast.

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stevenross • yesterday at 6:24 PM

I think simply enough nobody should ever purchase ownership in a firm at a IPO. There is clear data on how these things go, and you are getting a bad deal when you not dictating the price.

The company operations seem more robust then I would have though, I was surprised they are actually operating income positive. One should ignore the one time charges with the fluctuations in the fair value of the convertible note dent instruments.

Overall everything rests on firms outside tech sectors seeing quantitative increases in value to sustain such revenues and profits. For now the concentration in the cloud firms Is temporary as they build their own solutions.

The model layer is a commodity business with heavy capex requirements. I would not invest in such businesses as at a mature state they end up with utility like economics and are valued as such.

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helsinkiandrew • yesterday at 1:14 PM

It mentions "humanity" 21 times.

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ponkpanda • yesterday at 4:52 PM

The main question is now much of that ~USD 80bn of other expenses should be really be included in 2026 operating costs. It cuts to whether frontier inference is actually cashflow profitable.

If you take equity from Amazon and Google whereby the terms of that investments requires you to "spend" the investment in those investor's respective clouds, it's potentially a rather neat way of obfuscating your real level of profitability. Perhaps Anthropic only spent that equity on training rather than inference runs.

This is the circular financing that has been discussed widely in the press. It makes it very difficult for an outsider to really understanding whether the firm and by extension the other frontier labs are profitable.

asim • yesterday at 6:05 PM

Like all IPOs. Rockets day one. Plummets for the next 180 days to 50-60% of its value if not less. That's just wall street marketplace dynamics rather than a reflection on the quality of the business.

Ultimately what it's worth in 10 years will come down to what they build, unit economics and external factors that destroy the market which they can't control. It's hard to say it remains public in 5 years. I could be wrong but I think the rate and way in which these companies were built, it's likely they become huge acquisition targets as the markets get obliterated by global headwinds like nuclear war.

aanet • today at 12:34 AM

https://ant-s1.surge.sh/#cover

Of course, somebody had to do it. (not mine)

quantiq • yesterday at 1:26 PM

I'm tired boss.

jjallen • yesterday at 6:01 PM

On one hand I'm like AI is the future these companies likely have an advantage and will 10x over the next decade.

On the other hand I'm like anyone, especially China can distill a much smaller model that will run for free locally in a couple of years.

photon_collider • yesterday at 2:31 PM

What a historic moment! It'll be interesting to see how much Anthropic can continue growing.

There will come a point where open-source models are good enough for most people. However, I do expect there to be demand for frontier models for things like cybersecurity (especially on the enterprise side) and scientific research.

OJFord • today at 2:16 AM

Reading this submission's comments, I'd be interested to see a meta-analysis of HN S-1 submissions' analyses pre- and post- generalised (HN crowd's) Claude usage.

NickNaraghi • yesterday at 7:39 PM

> Our Class F common stock, which will be held by the Founder LLC, will be entitled to an aggregate number of votes that equals 50.1% of the total voting power of our outstanding shares of capital stock with respect to matters submitted to stockholders generally, including the election of our directors other than the Class T directors.

Man, what the fuck. Didn't we learn from Facebook?

atleastoptimal • yesterday at 6:13 PM

There's this premise that the demand for frontier intelligence is unlimited, thus the company with the best models in some dimension will always have growth potential as long as those models are the best. This however portends a very strange future.

Let's say you have Lawyerbot-4000 which can get even a serial killer off scot-free, but the state has DA-bot-5000. In the end it's a battle of who can spend more inference manipulating the narrative. A billionaire would easily find it worth 500 million in compute spend to win a case with a 1 billion dollar penalty. All this leads to race dynamics where everyone is using their superintelligences to defeat each other in a never-ending race to the bottom to eek out the smallest bit of alpha before status/money hierarchies become static.

The only stable futures are a ban on the development of frontier AI beyond a certain point, or an emergent singleton, where the AI's decide to collaborate in harmony rather than fight each other to the death at the behest of their competitive human users. Consequentially, the superintelligences will fare far better manipulating their human users into acting in a way that ensures their own well-being and continuity than spend all the world's electricity fulfilling their every whim.

jstummbillig • yesterday at 1:30 PM

It seems obvious that the AI stocks are an interesting buy, but I wonder how other people feel about picking between Anthropic/OpenAI/Google here. Looks all fairly random, given the wild swings and interoperability of the technology so far.

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anonu • yesterday at 5:01 PM

can't help but feel like the negativity in this thread will age like the AirBnB one or the DropBox one from the earlier era. but who is to know...

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