Anthropic’s IPO Pitch Meets an $895 Billion Compute Bill
Anthropic’s IPO Pitch Meets an $895 Billion Compute Bill
Anthropic’s original IPO prospectus, released last week, gave investors only a partial view of its finances. Monday’s amended S-1 filled in the missing third quarter — and sharpened the central contradiction in the company’s public-market pitch: Claude is selling rapidly, but serving that demand requires staggering amounts of capital.
For the three months through September 30, Anthropic reported roughly $17 billion in revenue, up from $11.6 billion in the prior quarter and about 12 times the level a year earlier. Revenue for the first nine months reached $33.24 billion, a year-on-year increase of roughly 1,200%. The company also had $146.6 billion in liquidity at quarter-end, giving it considerable room to keep investing.
But the quarterly figures showed that growth is becoming more expensive. Operating expenses rose to $17.5 billion from $10.6 billion in the second quarter, pushing Anthropic to a $567 million operating loss after a $974 million operating profit in the previous period. Its adjusted operating margin slipped to 15% from 19%, as it turned to pricier short-term computing capacity. Anthropic said the loss was “primarily driven by $5.0 billion of compute under short-term commitments,” which costs more than comparable multiyear arrangements.
The larger number, however, is the forward commitment: about $895.4 billion in purchases and leases, “substantially all” for compute and infrastructure. Nearly $70 billion is due in the 12 months after September 30, 2026; roughly $447.5 billion is expected by the end of 2030, with the remainder extending through 2045.
That commitment can be read two ways. Anthropic is seeking dedicated long-term capacity that it says should replace expensive short-term compute and support future demand. Yet analysts warn that an IPO valuation of $1.5 trillion to $2 trillion leaves little margin for error: revenue must compound fast enough to outrun compute costs, financing needs and intensifying price competition.
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