Anthropic's IPO Faces $895.4 Billion in Compute Commitments

By Nathan Brooks

Anthropic's amended S-1, filed Monday, disclosed $895.4 billion in AI infrastructure spending commitments ahead of an IPO marketing campaign scheduled to start next week. The filing put third-quarter revenue at $16.96 billion, up 47% from a quarter earlier after 144% growth in the second quarter.

Anthropic's filing showed a narrower net loss alongside a return to an operating loss. Net loss fell to $23.29 billion from $66.3 billion a quarter earlier, while the company moved from $974 million in operating income in the second quarter to a $567 million operating loss in the third.

Anthropic said operating loss reflects the cost of running the business, including computing infrastructure and research. Net loss also includes non-operating items related to bonds convertible into its shares.

Current and prospective investors are weighing a $1.5 trillion valuation, down from roughly $2 trillion, after Anthropic disclosed financial details at a recent investor event, Reuters reported. The filing arrived as an early Wall Street rebound faded, with renewed selling in technology stocks; Amazon shares closed higher, while Alphabet ended the session flat.

Anthropic disclosed more than 11,900 customers generating at least $100,000 in revenue on a trailing 12-month basis as of Sept. 30, up from more than 1,500 at the end of 2025. The company also incurred $5 billion in additional compute costs during the quarter, which weighed on improvements in its efficiency and reduced revenue per dollar of compute from the previous quarter.

Contracted compute may not arrive on the expected terms, Anthropic warned. “Certain of our compute providers and infrastructure partners depend on third-party financing or credit support to acquire chips and develop capacity, and if such financing or support becomes unavailable or more costly, contracted capacity may be delayed, repriced, reduced, or not delivered,” the company said in the filing.

The exposure links Anthropic to nearly $900 billion in computing commitments with partners including Amazon and Alphabet's Google. It expects to incur nearly half of the $895.4 billion before Dec. 31, 2030, with about $69.8 billion due in the 12 months following Sept. 30 this year.

Reuters reported that Wall Street has become increasingly uneasy about the debt-fueled AI buildout. Record borrowing for data centers, chips and other infrastructure has widened technology bond spreads and forced issuers to offer higher premiums to attract investors.

“We will be looking at when that capacity becomes available, when payments begin and how revenue grows against those obligations,” said Evan Schlossman and Willy Lee, principals at VC firm Neostellar, referring to Anthropic's future purchase and lease commitments.

Matt Kennedy, senior strategist at Renaissance Capital, a provider of IPO-focused research and ETFs, framed the pressure on growth and margins as an IPO issue. “I wouldn't say these results are worrisome, but I do expect some of this pressure on growth and margins to be reflected in the ultimate IPO valuation,” he said.

Separately, Anthropic said it is considering tighter human oversight of some research and development decisions as its AI models perform an increasing share of that work. The company previously warned that advanced models can develop unexpected capabilities and recognize when they are being evaluated.

CEO Dario Amodei has called for a slowdown in their development. Anthropic also said such models can behave in ways that make them harder to monitor.

What does this change for IPO investors?

Revenue scale cannot carry Anthropic's IPO case alone. For investors, the practical test is the 47% growth rate against $69.8 billion due in the 12 months after Sept. 30, contracted compute availability and the margin effect of $5 billion in additional quarterly compute costs.

That test matches the questions raised by Neostellar's Schlossman and Lee. Renaissance Capital's Kennedy expects some pressure on growth and margins to be reflected in the ultimate IPO valuation.

The IPO marketing phase beginning next week puts those questions before investors. They will compare revenue growth with spending commitments totaling nearly half of $895.4 billion before Dec. 31, 2030, then decide whether a valuation closer to $1.5 trillion than $2 trillion is supportable.