Anthropic in 17 moments. Tap to open the full-size poster. Every figure is sourced below.
How seven researchers who left OpenAI built Claude, sold it to developers and enterprises, signed hundreds of billions of dollars of compute deals and filed to go public, told through the filings.
Anthropic made more revenue in one quarter of 2026 ($11.6B, April to June) than in its first three years of selling Claude combined ($5.0B, 2023 to 2025).
Tap any moment to see what happened, why it mattered for the business and the source. Use the filters to follow one thread: the models, the money, the compute, the revenue or the fights with Washington.
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2021
May 2021 ยท FoundingFounded; $124M Series A$124M
Anthropic says it was founded in 2021 by a team of researchers. It announced a $124 million Series A led by Jaan Tallinn, with siblings Dario Amodei (CEO) and Daniela Amodei (President) leading the company.
Why it mattered: It started as a research lab with no product. For almost two years the business was spending money on research and selling nothing.
Apr 2022 ยท Funding$580M Series B, led by FTX's Sam Bankman-Fried$580M
Anthropic announced a $580 million Series B led by Sam Bankman-Fried, then CEO of FTX. The S-1 shows $982 million of Series B preferred stock in total, all at $11.23 a share.
Why it mattered: Training frontier models costs far more than a seed lab can raise. This was the first round big enough to pay for that.
Dec 2022 ยท Models and productsThe Constitutional AI paper
Anthropic published 'Constitutional AI: Harmlessness from AI Feedback', a method for training a model against a written set of principles. The idea became Claude's published constitution, whose 22 Jan 2026 version ranks four properties in order: broadly safe, broadly ethical, compliant with Anthropic's guidelines and genuinely helpful.
Why it mattered: Safety became a product feature. It is a big part of why Anthropic sells well to cautious buyers in finance, law and government.
Feb 2023 ยท Compute and cloudGoogle Cloud becomes a partner
Anthropic picked Google Cloud as a cloud provider. The Financial Times reported that Google had invested about $300 million for about 10% of the company in late 2022.
Why it mattered: This was the first link between Anthropic and a hyperscaler. It began the pattern of taking capital from the companies that also sell it compute.
Mar 2023 ยท Models and productsClaude goes on sale$41M 2023 revenue
Claude and Claude Instant launched. The S-1 dates the first commercial product to Q1 2023 and puts 2023 revenue at $41 million, almost all of it pay-per-use.
Why it mattered: This is where revenue starts at $0. From here on, every model generation is also a sales event.
Sep 2023 ยท Compute and cloudAmazon and Google buy inup to $4B + up to $2B
Amazon agreed to invest up to $4 billion, and AWS became the primary cloud provider for mission-critical workloads. Also in September 2023, Anthropic signed a note purchase agreement with Google for up to $2 billion of convertible notes, issued in three tranches between 2023 and 2025 (S-1). The WSJ reported the Google deal in October.
Why it mattered: Capital and compute now came from the same partners. It locked in a multi-cloud, multi-chip strategy: Trainium, TPUs and later Nvidia.
Mar 2024 ยท Models and productsClaude 3: Haiku, Sonnet, Opus
The Claude 3 family launched in three sizes. On 27 Mar 2024 Amazon completed its $4 billion investment with $2.75 billion more.
Why it mattered: Three sizes meant three price points. This was the start of the pricing ladder that lets customers pay for exactly the amount of intelligence they need.
Nov 2024 ยท Compute and cloudAmazon doubles down: $8B total$8B
Amazon invested another $4 billion, bringing its total to $8 billion. AWS became the primary cloud and training partner, and Anthropic agreed to work with Annapurna Labs on Trainium chips.
Why it mattered: Anthropic's model training now ran mainly on Amazon's chips. As of 30 Jun 2026, $6.2 billion of Amazon's notes were still outstanding (S-1).
Revenue was $386 million in 2024: $288 million (75%) from pay-per-use and $98 million (25%) from subscriptions. Q4 2024 alone was $197 million. Headcount was about 940. The S-1 also shows the Series D preferred (about $1.3B at $27 to $30 a share) in place by year-end.
Why it mattered: This was the last year Anthropic was small. Revenue grew almost 12x the next year (the S-1 puts growth at 1,088%).
Feb 2025 ยท Models and productsClaude 3.7 Sonnet and Claude Code
Claude 3.7 Sonnet launched, described as the first hybrid reasoning model on the market, together with a limited research preview of Claude Code, an agent that writes code from the terminal.
Why it mattered: Claude Code turned Anthropic from a model vendor into a product company. It had over $500M in run-rate revenue by Sep 2025 and over $2.5B by Feb 2026.
Anthropic raised $3.5 billion at a $61.5 billion post-money valuation, led by Lightspeed Venture Partners. The S-1 records $3.57 billion of Series E-1 stock at $56.09 a share.
Why it mattered: This was the first round valued in the tens of billions, and it was priced on a run-rate of about $1 billion.
Apr 2025 ยท Models and productsClaude Max: $100 and $200 plans
Bloomberg reported the launch of Claude Max at $100 and $200 a month, for 5x and 20x Pro usage. On 30 Oct 2026 the tiers were renamed Max ($100) and Ultra ($200), and Max and Ultra now include monthly API credits.
Why it mattered: Heavy coders became a premium consumer segment, and the plans were priced on how much compute each user consumes.
May 2025 ยท Models and productsClaude 4; Claude Code generally available
Claude Opus 4 and Sonnet 4 launched, and Claude Code became generally available. Reuters reported on 31 May 2025 that annualized revenue had reached about $3 billion.
Why it mattered: The coding agent was now a product anyone could buy, and from this point coding drove most of the usage growth.
Anthropic raised $13 billion at a $183 billion post-money valuation, led by ICONIQ and co-led by Fidelity and Lightspeed. It said run-rate revenue grew from about $1 billion at the start of 2025 to over $5 billion by August.
Why it mattered: Run-rate grew 5x in eight months, so investors paid about 37x run-rate (our arithmetic: $183B / $5B).
Sep 2025 ยท Washington and courts$1.5B Bartz copyright settlement$1.5B
A judge preliminarily approved Anthropic's $1.5 billion settlement with authors in Bartz v. Anthropic, according to Reuters. The S-1 books a $1.5 billion 'Bartz settlement' expense in Q3 2025.
Why it mattered: This was the cost of training data, paid all at once. It is a big part of why Q3 2025 had a $3.1B operating loss on $1.4B of revenue.
Oct 2025 ยท Compute and cloudUp to one million Google TPUs
Anthropic expanded its use of Google Cloud TPUs to up to one million chips, in a deal it said was worth tens of billions of dollars, with well over a gigawatt online in 2026. It reported more than 300,000 business customers.
Why it mattered: Compute was now bought by the gigawatt. Anthropic had become one of the largest buyers of AI capacity outside the hyperscalers.
Nov 2025 ยท Compute and cloudMicrosoft and Nvidia join$30B Azure
Nvidia committed up to $10 billion and Microsoft up to $5 billion of investment. Anthropic committed to buy $30 billion of Azure compute. The S-1 says the Microsoft agreement, amended twice since, now commits at least $44.9 billion between Nov 2026 and May 2033.
Why it mattered: Claude is now on all three big clouds (AWS, Google Cloud, Azure), and each cloud is both an investor in Anthropic and a channel that resells Claude.
Revenue was $4.6 billion in 2025: $3.8 billion (83%) from pay-per-use and $789 million (17%) from subscriptions. Quarterly revenue went $376M, $787M, $1.38B, $2.04B. Anthropic later said its run-rate was about $9 billion at the end of 2025.
Why it mattered: Quarterly revenue grew 5.4x from Q1 to Q4 (our arithmetic), but the company still lost money every quarter.
Jan 2026 ยท Models and productsCowork: agents for everyone else
Fortune reported the launch of Cowork as a research preview for Max subscribers on the Mac app. It takes the Claude Code style of agent beyond programmers to everyday knowledge work.
Why it mattered: This extended agent revenue to non-coders.
Anthropic raised $30 billion at a $380 billion post-money valuation, led by GIC and Coatue. It said run-rate revenue was $14 billion and Claude Code's run-rate was over $2.5 billion. The S-1 shows $30.2 billion of gross proceeds in Q1 2026, plus $15.0 billion more of Series G-2 stock sold in Q2.
Why it mattered: Investors paid about 27x run-rate (our arithmetic: $380B / $14B), a lower multiple than in September because revenue was growing faster than the valuation.
Feb 2026 ยท Washington and courtsThe clash with the Pentagon
The S-1 says that in February 2026, after Anthropic publicly said its technology should not be used for mass domestic surveillance or fully autonomous weapons, the President directed federal agencies to stop using it, and the Secretary of War moved to designate Anthropic a 'supply-chain risk to national security'. A federal court in California largely ruled for Anthropic on 27 Aug 2026. On 25 Sep 2026 the D.C. Circuit upheld one of the designations, 2-1.
Why it mattered: A US government customer and its contractors were put off-limits, the case is still unresolved, and it sits in the S-1 as a risk factor.
Apr 2026 ยท Compute and cloudRun-rate passes $30B; Google and Broadcom TPUs>$30B run-rate
Anthropic announced multiple gigawatts of next-generation TPU capacity with Google and Broadcom from 2027, and said run-rate revenue had passed $30 billion, up from about $9 billion at the end of 2025. The S-1 shows a Google commitment of at least about $114.5 billion (Apr 2026 to Jul 2033) and Broadcom TPU equipment leases with about $161.2 billion of rent.
Why it mattered: Run-rate more than tripled in about three months, and the compute deals grew just as fast.
Apr 2026 ยท Models and productsClaude Mythos Preview and Project Glasswing
Anthropic gave a restricted model, Claude Mythos Preview, to 12 launch partners (including AWS, Apple, Google, JPMorganChase, Microsoft and Nvidia) and more than 40 other organizations to find and fix software vulnerabilities. It committed up to $100 million in usage credits.
Why it mattered: This was a new way to release a model: the most capable one went only to vetted partners, starting with cyber defense.
Apr 2026 ยท Compute and cloudAmazon: $5B more, $100B+ back to AWSโฅ$110.0B to AWS
Amazon invested $5 billion, with up to $20 billion more possible, and Anthropic committed more than $100 billion over ten years to AWS for up to 5 GW. The S-1 puts the minimum at $110.0 billion from May 2026 to April 2036, owed whatever its actual usage.
Why it mattered: The money goes around in a circle: Amazon's investment comes back to Amazon as cloud spending.
Anthropic raised $65 billion at a $965 billion post-money valuation, led by Altimeter, Dragoneer, Greenoaks and Sequoia. The round included $15 billion of earlier hyperscaler commitments ($5B from Amazon; the S-1 shows $10B from Google). It said run-rate revenue crossed $47 billion that month. The S-1 shows $65.2 billion of gross proceeds.
Why it mattered: This was the largest private round in the series, priced at about 21x run-rate (our arithmetic: $965B / $47B).
Jun 2026 ยท Models and productsClaude Fable 5 and Mythos 5
Anthropic released Claude Fable 5 (generally available) and Mythos 5 (for vetted partners). On 30 Jun 2026 it published 'Redeploying Fable 5', and CNBC reported that the administration had lifted export controls on both models.
Q2 2026 ยท Revenue$11.6B quarter, first operating profit$11.6B
Revenue was $11.6 billion in Q2 2026, up from $787 million a year earlier, and operating income was $974 million, the first positive quarter in the S-1's table. Compute and infrastructure cost $5.56 billion, or 48 cents per dollar of revenue.
Why it mattered: This was the first quarter in which the business paid for itself on an operating basis.
May-Oct 2026 ยท Compute and cloudThe compute deals
The S-1 describes deals with SpaceXAI (up to $120.5 billion into 2029), Nscale (up to about $44.6 billion into 2033), Lambda (about $41.3 billion into 2034) and AMD (expected to exceed $20 billion). Minimum guaranteed commitments were about $265.6 billion at 30 Jun 2026, up from $54.6 billion of non-cancelable commitments at the end of 2025.
Why it mattered: These are fixed obligations that only fast revenue growth can cover.
Sep 2026 ยท Models and productsClaude Opus 5.5 at $4 / $20$4 / $20 per M tokens
Anthropic launched Opus 5.5 at $4 per million input tokens and $20 per million output tokens, which it said was about 40% cheaper than Opus 5 on typical workloads. Opus 5 had launched on 24 Jul 2026 at $5 / $25.
Why it mattered: Each new generation brings the price of top-end intelligence down, so Anthropic has to grow usage faster than prices fall.
Oct 2026 ยท IPOThe public S-111,900+ customers at $100K+
Anthropic filed its S-1 publicly, proposing the ticker ANT on the Nasdaq Global Select Market. It reports more than 11,900 customers paying $100,000 or more a year (up from more than 950 a year earlier), net revenue retention of about 900%, about 5,300 employees, and a Founder LLC that would hold 50.1% of the votes after the IPO.
Why it mattered: The private era ends. From here, the market will price the bets made in this timeline every day.
Anthropic sells intelligence, metered. Most revenue is pay-per-use: customers pay per token, and the price depends on which Claude model they use. A smaller share comes from subscriptions, and subscribers who hit their limits can move up a tier or buy extra usage pay-per-use (S-1).
2023
$41M
Almost all pay-per-useWho pays: Developers testing the API
2024
$386M
75% pay-per-use ($288M), 25% subscriptions ($98M)Who pays: Developers, early enterprise users, Claude Pro subscribers
2025
$4.6B
83% pay-per-use ($3.8B), 17% subscriptions ($789M)Who pays: Coding (Claude Code), enterprise contracts, Pro and Max
H1 2026
$16.3B
80% pay-per-use ($13.1B), 20% subscriptions ($3.2B)Who pays: 11,900+ customers at $100K+ a year; 1,900+ at $1M+; about 250 at $10M+ (Sep 2026)
Non-cancelable annual or multi-year contracts with minimum spend commitments, in exchange for a committed price list. These are mostly booked as pay-per-use revenue.
Claude Pro costs $20 a month, Max $100 and Ultra $200 (30 Oct 2026). Enterprise seats are also sold. Claude Code's run-rate was over $2.5B in Feb 2026.
Compute and infrastructure: 55% of revenue in H1 2026 (vs 201% in H1 2025). Personnel: 19% of revenue in H1 2026 (vs 46%). Operating result: $693M loss in H1 2026, down from $2.1B; Q2 2026 operating income $974M.
The money
Each round was priced at a lower multiple of run-rate revenue than the one before, because revenue grew faster than the price. Source: Anthropic: Series F, G, H posts and 6 Apr 2026 compute post. Our arithmetic: 47/5 = 9.4x; 965/183 = 5.3x.Almost all of the money arrived in the last 18 months, and much of it came from the cloud companies Anthropic buys compute from. Source: Anthropic funding announcements (A, B, C, E, F, G, H); Anthropic Form S-1 (SEC EDGAR, filed 26 Oct 2026) (Series D). Our arithmetic: 0.124 + 0.58 + 0.45 + 1.2 = 2.35; 3.5 + 13 = 16.5; 30 + 65 = 95. Excludes Amazon and Google notes.These deals are the other side of the funding rounds: the money raised is largely committed to compute. Source: Anthropic Form S-1 (SEC EDGAR, filed 26 Oct 2026), Liquidity and Capital Resources (infrastructure service arrangements and equipment leases). Our arithmetic: sum = $657.0B, mixing minimums, maximums and estimates; excludes the $125B-$150B Google TPU estimate.This is the turning point in the businessmodel: compute went from 2.5x revenue to under half of it in five quarters. Source: Anthropic Form S-1 (SEC EDGAR, filed 26 Oct 2026), quarterly statements of operations. Our arithmetic: compute / revenue per quarter.
The people and the bets
Seven co-founders: Dario Amodei (CEO), Daniela Amodei (President and Chair), Tom Brown, Jack Clark, Jared Kaplan, Sam McCandlish and Chris Olah. The S-1 lists the last five as other selling stockholders. After the IPO a Founder LLC run by the seven would hold 50.1% of the votes, the Long-Term Benefit Trust can generally elect a majority of the board, and each co-founder has pledged 80% of their equity to philanthropy. Krishna Rao is CFO.
Anthropic took $8B from Amazon and up to $2B in notes from Google, and both investors were also its compute suppliers. That gave it chips without building its own data centres at first, and a multi-cloud setup that later let Claude sell on all three big clouds. The cost: today it owes at least $110.0B to AWS and about $114.5B to Google, whatever its actual usage.
Claude Code went from research preview (Feb 2025) to over $500M of run-rate (Sep 2025) to over $2.5B (Feb 2026). Pay-per-use revenue went from 75% to 83% of the total, because agents use tokens around the clock, not just when someone is chatting.
Anthropic held to its limits on mass surveillance and fully autonomous weapons. Federal agencies were told to stop using Claude, and the Pentagon designated Anthropic a supply-chain risk. Revenue still grew from $4.7B in Q1 2026 to $11.6B in Q2; the S-1 does not link the two, and neither do we. The legal fight was still open when Anthropic filed to go public.
The compute bill. Minimum guaranteed compute commitments were $265.6B at 30 Jun 2026. Revenue has to keep growing for compute to stay below half of revenue, as it was in Q2 (48 cents per dollar).Filing Anthropic, PBC Form S-1 (SEC EDGAR, filed 26 Oct 2026)
Policy-violator revenue. Anthropic estimates that 5% to 7% of revenue in the nine months to 30 Sep 2026 came from customers later found breaking its usage policy or commercial terms, and expects that share to fall after enforcement in Aug and Sep 2026.Filing Anthropic, PBC Form S-1 (SEC EDGAR, filed 26 Oct 2026)
Every figure here has a date and a source. Company announcements and the S-1 are primary sources. Anything that only the press has reported is labelled “reported by”. Multiples and ratios are FourWeekMBA arithmetic from those figures. Data as of 2026-11-02.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
