Anthropic’s IPO story got more complicated last week, when the company first released a prospectus that covered only the first half of 2026. Investors were left waiting for fresher figures in a market where AI economics can shift quarter by quarter.¹

On Monday, the amended S-1 supplied them. Anthropic reported nearly $17 billion in third-quarter revenue, up from $11.6 billion in the previous quarter and more than 12 times the level a year earlier.² Revenue for the first nine months reached $33.24 billion, roughly 1,200% higher than the same period in 2025.³

That is the bullish case: Claude’s enterprise business is scaling at a pace few software companies can match. Anthropic also ended September with $146.6 billion in cash and readily accessible investments, a formidable cushion as it prepares for an IPO that could raise as much as $100 billion and value the company at $2 trillion.¹

But the new filing also puts a hard number on the cost of that expansion. Anthropic has committed about $895.4 billion under purchase agreements and leases, “substantially all” for compute and infrastructure.³ Nearly $70 billion comes due in the 12 months after September 30, 2026; about $447.5 billion is expected by the end of 2030.²

The pressure was already visible in the quarter. Anthropic swung from $974 million in operating income in the second quarter to a $567 million operating loss in the third, saying the result was “primarily driven by $5.0 billion of compute under short-term commitments.”⁴ Compute and infrastructure charges rose to $9.9 billion, four times their year-earlier level.⁴

Its $23.29 billion quarterly net loss looks alarming, though much of the nine-month $104 billion loss reflected accounting charges tied to convertible notes and related liabilities rather than operating costs alone.¹ The investor question is therefore less whether demand exists than whether the revenue surge can finance the machines required to serve it.