Two fundraising plays, opposite directions
Anthropic picked daylight. On June 1 it confidentially filed a draft S-1 with the SEC; Bloomberg reported it could begin formal marketing as early as the week of November 9, with NVIDIA discussed as a possible anchor investor at up to $10 billion. At $2 trillion it would be worth more than double the $965 billion private valuation it reached in May 2026, and the raise would overtake SpaceX's as the largest share sale ever completed.
OpenAI picked discretion. CEO Sam Altman ruled out a 2026 debut, calling it "ill-advised" on safety grounds. Instead the company is in talks for at least $30 billion pre-IPO at roughly $1.4 trillion post-money, per Bloomberg, following a $122 billion raise in March 2026 at an $852 billion post-money valuation. SoftBank executed the third and final $10 billion tranche of a follow-on investment on October 1.
The contrast is not vanity. It is about what kind of scrutiny each company wants on its spending. Public investors get quarterly questions. Private investors get private answers.
Read the losses line by line
Anthropic's 2025 figures, via Reuters' look at the prospectus: revenue of nearly $4.6 billion, roughly twelve times the previous year, on an operating loss of $8.06 billion. The headline net loss was about $42 billion, but roughly $34 billion of that is a non-cash accounting charge tied to financing instruments that could convert into shares. No cash left the building for that line. The operating numbers are the real story. Computing costs alone ran about $7.33 billion, more than half of all spending.
Then the commitments: about $518 billion in multiyear cloud, compute and infrastructure obligations, roughly 80 percent binding and non-cancelable, over seven to ten years. $111.1 billion to Google, $110 billion to Amazon, $31.4 billion to Microsoft. Nearly a quarter of Anthropic's revenue came from just two large, unnamed customers, and 47 percent of 2025 sales were routed through Amazon and Google's clouds. The company ended 2025 with about $20.3 billion in cash and short-term investments. That is real money, and it is roughly four percent of what it has promised to spend.
OpenAI's side is less transparent by design. The FT-reported internal plan: negative free cash flow of $278 billion cumulatively from 2026 through 2030. Axios reported on September 29 that annualized revenue run rate is approaching $70 billion, up more than 70% since the start of the third quarter. Do the arithmetic and the plan burns roughly $55.6 billion a year against that run rate. OpenAI needs capital for data centers, and the ask keeps getting bigger. Market commentary claims Q2 2026 revenue topped $11.5 billion with positive adjusted operating income, but that has not been confirmed in any public filing as of October 1, so read it as rumor.
Runway is not a moat
A company going public with $518 billion in commitments and a $42 billion net loss is either extraordinarily confident or under pressure it cannot name. A company delaying its IPO while revenue approaches $70 billion annualized is either disciplined or buying time. Both readings can be true at once.
What public markets do impose is a discipline OpenAI is currently avoiding: defending the spending quarter by quarter. What private capital offers is patience concentrated in a small circle whose interests can shift. The interesting disclosure in Anthropic's filing is not the $2 trillion target. It is how ordinary the economics look once you strip out the valuation: enormous revenue growth, equally enormous capital requirements, and a business that asks investors to value a software company partly as one of the world's largest infrastructure buyers.
Neither path guarantees durability. Capital buys runway, not a moat. The moat, in AI, has not been established by either company yet.
Sources
- [1] Stock Moguls, "OpenAI Picked $30 Billion Over an IPO. Anthropic Went Public-First." (Oct 1, 2026; citing Bloomberg, FT, Axios)Read source
- [2] CoinCentral, "Anthropic Targets Mid-November IPO That Could Value Company at $2 Trillion" (Oct 2, 2026; citing Bloomberg)Read source
- [3] The Prompt Insider, "Anthropic's IPO Targets a $2 Trillion Valuation" (Sept 30, 2026; citing Reuters' review of the S-1)Read source
- [4] bytevyte, "Anthropic IPO Set for November as $100 Billion Raise Targets $2 Trillion Value" (Sept 25, 2026)Read source