Anthropic Lost $80B in Six Months, IPO Filing Shows
Anthropic posted a net loss of over $80 billion in the first half of 2026, its draft IPO prospectus shows. Most of it is an accounting adjustment, not cash.
Anthropic recorded a net loss of more than $80 billion in the first half of 2026, according to a draft IPO prospectus viewed by The Wall Street Journal. That is a steep jump from the $13 billion net loss it posted in the same period a year earlier. But there is a catch. Most of that loss - about $72 billion - came from accounting charges tied to changes in the value of convertible notes and other funding instruments the company issued. In simple terms, it is largely a paper loss, not cash the company actually spent.
The numbers behind the loss
The draft filing, which Anthropic is preparing ahead of a blockbuster IPO, paints a picture of a company growing fast but spending enormously. Revenue in the first half of 2026 reached $16.3 billion, showing what the Journal called breakneck growth. That growth, though, rests on a narrow base. Around one-fifth of the $16.3 billion came from just two customers. The filing warns that a significant portion of revenue will come from a limited number of customers for the foreseeable future - a risk factor investors will read closely. The momentum is still building. Reuters reported last week that Anthropic's third-quarter revenue rose 45 percent to $16.8 billion from the previous quarter, citing an investor who attended a pre-IPO meeting with company leadership in San Francisco.
The $750 billion compute bill
The filing also reveals the staggering scale of what comes next. Anthropic signaled that it could potentially spend $750 billion in the coming years on computing capacity, including deals it is still negotiating. That figure sits on top of existing obligations. Reuters reported in September that the company plans to spend $518 billion on cloud, computing, and infrastructure commitments, and that it posted a $42 billion net loss in 2025 even as revenue grew 12-fold to nearly $4.6 billion. The prospectus lists a sprawling set of risk factors: a narrow customer base, uncertain access to computing power, questions over how it will prevent its models from causing harm, exposure to sophisticated cyberattacks, and even possible blackmail by uncontrolled models.
The IPO stakes
Anthropic is preparing for a blockbuster IPO that could help it reach a valuation of $2 trillion. The filing reveals a company growing at a red-hot pace that needs hundreds of billions of dollars to acquire the computing power required to train and serve its AI models. Anthropic declined to comment on the Journal's report, and did not immediately respond to a Reuters request for comment.
Why it matters
This is the strange math of the AI boom in one filing: record paper losses alongside record revenue growth. The $80 billion headline number looks alarming, but the $72 billion in accounting adjustments means the real story is the cash question - how much Anthropic must keep spending on chips and data centers to stay in the race, and whether investors will fund it at a $2 trillion valuation.
Sources
- Wall Street Journal - https://www.wsj.com/tech/ai/anthropic-revenue-growth-ipo-accaf0f1 - Reuters - https://www.reuters.com/business/anthropic-recorded-net-loss-over-80-billion-first-half-this-year-wsj-reports-2026-10-20/