OpenAI vs Anthropic: Valuation, Revenue, and IPO Plans
Full research prompt
Compare OpenAI with Anthropic on the latest valuations, funding rounds, revenue run rate, burn, investor base (Google, Amazon, others), governance (Long-Term Benefit Trust, PBC status), and reported IPO preparations such as banks hired, filings, and timing. Build a side-by-side table and assess who is likely to list first, who has the stronger financial profile, and how one listing might affect the other. Include any estimates of public-market investor appetite for AI labs.
From OpenAI Valuation 2026: The $1.4T Round and Why There Is No IPO Yet
Anthropic is positioned to list first, and the gap is no longer theoretical. As of October 22, 2026, it has not yet published its S-1, but multiple reports say a public filing could come as soon as October 23–26, with a roadshow the week of November 9 and pricing the following week—before Thanksgiving—if the window holds. OpenAI confidentially filed in June and then explicitly took 2026 off the table. That sequencing is already reshaping private capital: OpenAI is trying to lock a roughly $30 billion round above a $1.4 trillion pre-money mark before Anthropic’s disclosures force a direct public comparison.
Side-by-side snapshot (as of October 22, 2026)
| OpenAI | Anthropic | |
|---|---|---|
| Last closed valuation | $852B post-money (March 2026, $122B round) | $965B post-money (May 2026, $65B Series H) |
| Live price talk | Talks for ≥$30B at ~$1.4T pre-money; not closed | IPO range debated at $1.5T–$2T; some investors arguing nearer $1.5T after Q3 |
| Recognized revenue | Investor materials cited ~$36B expected to be booked in full-year 2026 | 2025: ~$4.6B. Q1 2026: ~$4.7–4.8B. Q2: ~$11.5–11.6B. Q3: $16.8B. H1: $16.3B |
| Annualized run rate | ~$50B at end-September (company’s net method). Target $70B+ by year-end. A ~$70B figure circulating in late September was an investor gross-up to match Anthropic’s method | >$65B at end-July. Q3 annualizes to ~$67B; SemiAnalysis ~$74B. Year-end path to >$100B has been walked back |
| Near-term economics | Costs still far above revenue. July plan: negative free cash flow of $278B over 2026–2030; ~$856B compute/infrastructure; March cash projected exhausted by 2028 | Adjusted operating profit in Q2 and Q3; Q3 adjusted operating margin ~11%; cash-flow positive in Q3; ~$1.70 of revenue per $1 of compute. GAAP H1 net loss $80.7B, of which ~$72B non-cash (convertible-note marks) |
| Forward obligations | Large multi-year cloud and chip deals (Oracle, Azure, AWS, CoreWeave, Nvidia/AMD capacity). Spend is partner-financed in part, which is why burn can fall while commitments rise | Draft prospectus: ~$450B cloud over 7–10 years, mostly non-cancelable (~$111B Google, ~$110B AWS, ~$31B Microsoft). Broader cited stack ~$518B; potential total toward ~$750B including deals still being negotiated |
| Anchor investors | Microsoft ~27% as-converted at the Oct 2025 recap (later ~25% in Microsoft’s FY2026 10-K). SoftBank ~13% after finishing $64.6B cumulative (Oct 1, 2026). Amazon up to $50B and Nvidia $30B in the 2026 round. Foundation holds ~26% | Amazon carried the stake at $190.4B on June 30 (notes + nonvoting preferred)—implying high-teens to ~20% at the $965B mark, not an official percentage. Alphabet ~14%, contractually capped at 15%, no vote and no board seat. Microsoft up to $5B and Nvidia up to $10B committed in Nov 2025 |
| Governance | OpenAI Group PBC, controlled by the nonprofit OpenAI Foundation, which appoints the PBC board despite a minority economic stake | PBC. Long-Term Benefit Trust can seat a board majority (reported as 4 of 7) via Class T stock; trustees include Ben Bernanke, Neil Buddy Shah, Richard Fontaine, and (as of Oct 21) physicist Christopher Stubbs. Trust agreement largely unpublished. New Public Benefit Fund would commit 5% of shares, with optional top-ups. Founder voting via a Class F / Founder LLC structure has also been reported |
| IPO status | Confidential S-1 June 8, 2026. Goldman Sachs and Morgan Stanley leading; Citigroup and JPMorgan discussed. Altman: not 2026. Friar: public company in 2027 | Confidential S-1 June 1, 2026. Public filing expected imminently (as early as Oct 23–26). Morgan Stanley and Goldman Sachs joint bookrunners; JPMorgan and Citi prominent. Roadshow targeted week of Nov 9. Raise discussed up to ~$100B. ~$15B revolver being expanded, Morgan Stanley leading |
Sources for the load-bearing figures: OpenAI’s March round and live talks are in Bloomberg reporting carried by Moneyweb and in Reuters’ October 19 exclusive; the $50B versus $70B revenue distinction is Financial Times / Bloomberg, summarized by The Decoder and PitchBook; the $278B burn is the Financial Times, confirmed by Reuters. Anthropic’s Q3 print is the Financial Times and Reuters from the October 14 investor day; the H1 loss and compute stack are the Wall Street Journal draft prospectus, reported by Reuters. Governance is OpenAI’s own structure page and Anthropic’s October announcements plus WSJ reporting on the trust.
Revenue is not apples-to-apples, and that gap is now the valuation fight
The single most important accounting fact in this comparison is how partner sales are counted. Anthropic includes the full sale when Claude is sold through Amazon, Google, or Microsoft. OpenAI, in the figures it gave investors, counts only its own share. Investors who grossed OpenAI up to Anthropic’s method produced the late-September “nearly $70 billion” headline; the number OpenAI itself showed for end-September was approaching $50 billion. OpenAI then told investors it expects to reach $70 billion or more of annualized revenue, on its own method, by year-end, led by enterprise. Both approaches are internally consistent. Neither is audited quarterly GAAP, and neither should be treated as full-year booked revenue. OpenAI’s own materials have been reported as expecting about $36 billion recognized across all of 2026 even while the run rate sits near $50 billion.
On recognized quarterly revenue, Anthropic is currently the larger book: $16.8 billion in Q3 alone, up about 45% from roughly $11.5–11.6 billion in Q2, after more than doubling from Q1. That sequential slowdown is what cooled the $2 trillion IPO talk. Annualizing the quarter gets you about $67 billion; industry estimates around $74 billion imply a higher September exit rate, but monthly growth after July was far slower than the January–July surge. Getting back above $100 billion by year-end would require a reacceleration that several investors no longer assume.
OpenAI’s consumer franchise is still the one the public knows—reports put weekly active users near one billion by August and paying subscribers above 50 million earlier in the year, with enterprise having overtaken consumer and more than two million business customers. That distribution is a real asset. It has not yet translated into the cleaner near-term margin story Anthropic is selling.
Burn versus commitments: two different ways to be overextended
OpenAI’s problem is cash. A July presentation seen by the Financial Times projects negative free cash flow of $278 billion from 2026 through 2030—an improvement on a May figure near $305 billion, not a sudden austerity program. Over the same window it expects revenue to rise from about $36 billion this year to about $350 billion in 2030 ($840 billion cumulative) while spending about $856 billion on compute and infrastructure. The March $122 billion round is projected to be used up by 2028. That is why the current raise is not optional branding. It is runway, and Reuters reported OpenAI is compressing the process specifically so commitments land before Anthropic’s IPO, with SoftBank, Abu Dhabi’s MGX, and other existing backers in the talks, plus outreach to long-only funds and sovereigns.
Anthropic’s problem is the other side of the same coin: it can show adjusted profit and positive cash flow now, and still be locked into obligations that dwarf current revenue. The draft prospectus reviewed by the Wall Street Journal shows an $80.7 billion first-half net loss, but about $72 billion of that is a non-cash mark on convertibles and similar instruments, not cash out the door. Compute and infrastructure spending in the half was nearly $9 billion, more than all of 2025. Against that, management told investors it was cash-flow positive in Q3, with an adjusted operating margin around 11% and $1.70 of revenue per dollar of compute. The binding constraint is contractual: roughly $450 billion of cloud agreements over seven to ten years, most non-cancelable, plus a wider stack that has been described at $518 billion and, including deals still in negotiation, as high as about $750 billion. Positive quarterly cash flow does not retire a take-or-pay cloud book.
For someone underwriting either name, the cleaner current P&L is Anthropic’s. The larger consumer distribution and the more explicit multi-year funding hole are OpenAI’s. Neither profile is “strong” in a conventional software sense. One is profitable on an adjusted basis with a huge off-balance-sheet-style commitment stack; the other is still deeply cash-negative with a published plan that requires another nine-figure billions of capital before the decade is out.
Governance will be priced, not just disclosed
Both are public benefit corporations, but the control mechanics are different, and public investors will notice.
OpenAI’s October 2025 recapitalization put the business in OpenAI Group PBC and left the OpenAI Foundation in control: the Foundation holds about 26% of the equity and appoints the PBC board. Microsoft’s economic stake was about 27% as-converted at closing and later about 25% in its own annual report. Investors, including the new 2026 anchors, do not run the board. An April 2026 rewrite of the Microsoft deal capped revenue-share payments, made the IP license non-exclusive through 2032, and let OpenAI sell on any cloud. That reduced one governance-and-economics overhang. It did not turn OpenAI into a normal controlled company. Public shareholders would be buying a PBC whose directors are chosen by a nonprofit.
Anthropic’s structure is more unusual still, and it is about to be tested in a prospectus. The Long-Term Benefit Trust holds no meaningful economic stake and can elect a majority of the board—reported as four of seven—through Class T shares. Trustees are paid for time, not equity. The current group includes former Fed chair Ben Bernanke; on October 21 the company added Harvard physicist Christopher Stubbs. The Wall Street Journal has noted that the trust agreement itself has not been published, that the trust already shapes the board, and that no tech company has listed with this kind of non-shareholder override. Separately, Anthropic said on October 18 it would commit 5% of shares to a new Public Benefit Fund, with the board able to add 2% for every 50% increase in value above a baseline, and that combined with existing employee and founder pledges roughly 20% of shares are aimed at public-benefit uses. Reporting has also described a founder voting vehicle that would direct a Class F share so a majority of founders control 50.1% of votes on key matters, with public holders electing none of the board on their own. NYC Comptroller Mark Levine has already asked the company to pause the IPO over safety and governance. That letter will not stop a listing. It is a preview of the questions the roadshow will get.
Who lists first, and what the first print does to the other
Anthropic is the likely first listing, and by a wide margin if markets cooperate. It filed confidentially on June 1, a week before OpenAI’s June 8 submission. Sam Altman told Fortune a 2026 IPO would be ill-timed because of safety work and put the debut in 2027; CFO Sarah Friar told employees the company would be public in 2027, and that Anthropic going first was acceptable. Bankers split Goldman Sachs and Morgan Stanley into separate teams so the same houses can work both deals without sharing information—an arrangement the Wall Street Journal described as rare. Anthropic’s syndicate is further along operationally: a revolver expansion toward $15 billion, led by Morgan Stanley with Goldman, JPMorgan, and Citi in prominent roles, is the usual prelude to notifying banks of formal IPO roles.
The November window is narrow. Midterm elections, then Thanksgiving, then year-end. The Financial Times noted Polymarket pricing roughly a 60% chance of a November listing; CNBC cited Kalshi at about 75% that Anthropic is the last major 2026 IPO still likely to be officially announced this year. A slip into 2027 is the main alternative, not an OpenAI surprise debut.
On the financial profile that public investors can underwrite today, Anthropic is stronger. It has crossed into adjusted profitability and positive cash flow while still growing recognized revenue faster than almost any scaled software company on record. OpenAI has the better-known product, a larger private capital stack already closed ($122 billion in March), and a year-end run-rate target that, if hit, narrows the revenue gap. It does not have a credible near-term path to self-funding the plan it has shown investors. PitchBook’s October note put a fair-value sketch near $1 trillion against the corrected $50 billion run rate, below the $1.4 trillion talk—useful as a dissent, not as a market price.
The feedback loop runs both ways, but Anthropic moves first.
- A clean book at $1.8–2 trillion, with the stock holding after the first lockup-relevant weeks, validates frontier-lab multiples in the mid-20s to low-30s on run-rate sales and makes OpenAI’s private $1.4 trillion pre-money easier to defend into a 2027 listing. Amazon and Alphabet, whose Anthropic stakes are large enough to matter in their own earnings (Amazon carried $190.4 billion at June 30), get a mark-up. Microsoft, Nvidia, and SoftBank get a comp for OpenAI.
- A cut-price or volatile deal—the $1.5 trillion number some investor-day attendees were already discussing—resets the comp down before OpenAI ever files publicly. Reuters reported that OpenAI wants its round done before those disclosures invite exactly that comparison. Other issuers are already waiting out Anthropic so they are not competing for the same orders. A weak print would also pressure the circular-financing story: the cloud providers are simultaneously Anthropic’s largest capacity vendors, major shareholders, and, in Amazon’s case, an OpenAI investor too.
- Even a successful Anthropic listing does not clear OpenAI’s path. Public holders will have a traded pure-play with published margins, customer concentration, and a non-cancelable compute schedule. OpenAI will be marked against that every quarter it stays private. If Anthropic’s stock trades at a governance discount because of the Long-Term Benefit Trust, OpenAI’s Foundation-controlled PBC will be asked why its version should clear a higher multiple.
Public-market appetite: large, but no longer indiscriminate
Appetite is real and narrower than it was in the spring. SpaceX’s June listing, priced around $1.8 trillion, is the ceiling everyone is quoting. Anthropic is being discussed as the deal that could exceed it, with a primary raise talked about as high as about $100 billion. That only works if long-only funds and sovereigns treat a frontier lab as a scarce asset rather than as another capex story.
The pushback is already in the price talk, not just in commentary. After Q3 growth slowed from more than doubling quarter-on-quarter to about 45%, some existing and prospective investors argued for closer to $1.5 trillion than $2 trillion. Chip stocks sold off around the same investor meetings on inflation, higher yields, and worry about debt-financed data-center buildout. The New York Times framed Anthropic as the canary: a delayed or discounted debut would mark down stakes sitting on Amazon and Google’s books and, by comp, OpenAI. Safety language in the draft—catastrophic-risk warnings were reported from earlier prospectus reporting—plus an opaque trust that can remake the board, is a feature for some mission-aligned capital and a structural discount for others.
What would change the ranking: OpenAI hitting the $70 billion year-end run rate on its own accounting, with enterprise growth still above 100% and a visible narrowing of quarterly cash burn, would strengthen the 2027 case and could support the $1.4 trillion private mark even if Anthropic prices cautiously. Anthropic showing, in the public S-1, that Q4 monthly growth reaccelerated and that the non-cancelable cloud book is matched by contracted customer demand would support the high end of its range. Neither of those is in hand on October 22. What is in hand is a filing calendar that puts Anthropic in front of public investors within weeks, and a rival that has chosen to meet that moment with another private round rather than a prospectus.
Recent Findings Supplement (October 2026)
Anthropic is on track to test public-market appetite for frontier AI labs first with a November 2026 IPO (potentially at $1.5–2T), while OpenAI accelerates a large private round and targets 2027. Recent disclosures show both companies posting explosive revenue growth alongside massive infrastructure commitments and accounting-driven losses, setting up Anthropic’s debut as a direct gauge of whether investors will pay 20–40x annualized run rates for high-burn AI developers.[1][2]
Valuations and Recent Funding
OpenAI closed a record $122 billion round in March 2026 at an $852 billion post-money valuation (led by Amazon, NVIDIA, and SoftBank). It is now in advanced talks for $30 billion or more at a $1.4 trillion pre-money valuation, with UAE funds such as Abu Dhabi’s MGX in discussions to anchor the round. The company is racing to close this financing before Anthropic’s expected listing to lock in capital and strengthen its balance sheet ahead of a 2027 IPO.[3][4]
Anthropic raised $65 billion in May 2026 at a $965 billion post-money valuation. It confidentially filed for an IPO in June and is targeting a November 2026 debut (roadshow potentially the week of November 9, trading before Thanksgiving) at a valuation that investors have discussed in the $1.5–2 trillion range after recent disclosures, down from some earlier $2 trillion expectations.[1][5]
Side-by-side snapshot (latest reported figures):
- OpenAI: $852B post-money (Mar 2026); targeting $1.4T pre-money private round (Oct 2026 talks).
- Anthropic: $965B post-money (May 2026); IPO target discussed at $1.5–2T (Oct 2026 investor feedback).[6]
Implication: The compressed timeline for OpenAI’s private round reflects direct competition for overlapping investor capital; a strong Anthropic IPO could ease or tighten terms for OpenAI’s 2027 plans depending on multiples achieved.
Revenue Run Rates, Growth, and Burn
OpenAI’s annualized revenue run rate reached approximately $50 billion by the end of September 2026 (up from roughly $40 billion in August and ~$20 billion at end-2025), with Q3 growth of 77% overall and 107% in enterprise (now the majority of revenue). The company expects to reach or exceed $70 billion annualized by year-end 2026, driven by enterprise expansion. It reported ~$13 billion in 2025 revenue against a $38.5 billion net loss.[7][8]
Anthropic reported Q3 2026 revenue of $16.8 billion (up ~45–46% from Q2’s $11.5–11.6 billion and from Q1’s ~$4.7–4.8 billion). H1 2026 revenue totaled $16.3 billion (vs. $1.1 billion prior year). Its annualized run rate stood at ~$65 billion in late July (with some estimates at $74 billion later), with expectations of remaining below $100 billion by year-end. It described itself as adjusted profitable in Q3.[9][2]
Both companies carry heavy forward commitments: OpenAI faces projected cumulative burn approaching $280 billion by end-2030; Anthropic disclosed at least $518 billion in infrastructure commitments over roughly a decade (potentially up to $750 billion), with H1 2026 infrastructure spend nearing $9 billion.[6][10]
Implication: OpenAI shows slightly faster recent sequential acceleration in some metrics and a clearer path to the $70 billion+ run rate, but both exhibit similar patterns of revenue growth lagging behind multi-hundred-billion-dollar compute obligations. Public investors will scrutinize whether growth sustains at current multiples.
Investor Bases
OpenAI’s major backers include Microsoft (~25–27% stake post-recapitalization and recent rounds), Amazon (up to $50 billion commitment in the March round), NVIDIA, SoftBank, and discussions with UAE sovereign funds such as MGX. Overlap exists with Anthropic investors (e.g., Sequoia, Founders Fund).[11][12]
Anthropic’s largest disclosed investors include Amazon (largest single investor, ~$8 billion reported in some coverage) and Google (~$3 billion total). It has raised roughly $125–130 billion cumulatively, with significant overlap (~90 shared investors) alongside OpenAI backers.[13][14]
Implication: Shared investors create hedging dynamics; success or valuation compression in one IPO could influence allocations and terms for the other.
Governance Structures
OpenAI operates as OpenAI Group PBC (public benefit corporation) controlled by the OpenAI Foundation (nonprofit), which holds ~26% equity and retains sole power to appoint/remove the PBC board and enforce mission/safety decisions. Microsoft holds a minority economic stake without control.[15]
Anthropic is a PBC with a novel “Founder LLC” structure giving its seven co-founders 50.1% voting control via Class F stock on key matters. It recently committed 5% of shares (potentially scaling with valuation) to a Public Benefit Fund for AI safety, biomedical research, and related causes (plus founder/employee pledges bringing ~20% earmarked for public good overall).[16][17]
Implication: Both emphasize mission alignment via PBC status, but Anthropic’s founder voting bloc and explicit equity commitments to a benefit fund represent distinct mechanisms that may appeal differently to public investors focused on governance and societal impact.
IPO Preparations, Timing, and Market Appetite
OpenAI confidentially filed its S-1 in June 2026; lead banks referenced in coverage include Goldman Sachs and Morgan Stanley. CEO Sam Altman has ruled out a 2026 listing, with targets now pointing to 2027. The company is accelerating its private round partly to prepare its balance sheet.[18]
Anthropic confidentially filed in June 2026, with Goldman Sachs and Morgan Stanley as lead underwriters (JPMorgan and Citi also involved). It plans a public S-1 filing as early as October 23, 2026, targeting a November listing—positioning it as the first major test of AI-lab valuations post-SpaceX’s record IPO.[19][20]
Assessment: Anthropic is positioned to list first (November 2026 vs. OpenAI’s 2027 target). OpenAI currently shows a stronger near-term revenue trajectory and enterprise momentum, but both carry comparable high-burn profiles. A successful Anthropic IPO at attractive multiples would likely boost sentiment and ease OpenAI’s path; a muted reception or valuation reset could pressure OpenAI’s private round terms and delay or lower expectations for its 2027 debut. Public appetite remains high for AI growth stories but is tempered by scrutiny of compute costs, accounting losses, customer concentration, and sustainability at 20–40x run-rate multiples.[2]
These developments are drawn exclusively from sources published after April 22, 2026.