Anthropic's third-quarter revenue reaches $16.8 billion as growth decelerates before its planned November IPO

Meta description: Anthropic IPO: $16.8 billion third-quarter revenue, slowing growth, 11% margin and distillation risks shape the November offering before Thanksgiving.

Tags: Anthropic IPO, Claude Code, Opus 5.5, AI profitability, distillation

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Anthropic IPO plans are facing a tougher market after the AI company shared third-quarter revenue of $16.8 billion with potential investors at a private meeting in San Francisco, according to multiple US media reports. The figure marks a roughly 45 percent jump from the second quarter and is more than 3.6 times the company's total annual revenue for 2025, but it also shows growth slowing from the pace earlier in the year.

Background: A Rapid Valuation Rise Sets Up the IPO Test

The Information says the planned IPO is set for November before Thanksgiving, and it will be the biggest test yet of investor appetite for the AI boom. Anthropic's private valuation jumped to $965 billion in May, up from under $20 billion just two years earlier, while some bankers floated a $2 trillion IPO. That earlier excitement now collides with high inflation, rising borrowing costs, public sentiment toward AI that remains more negative than positive, and unsolved cybersecurity risks that pose a real operational threat.

Development: From 140 Percent Growth to a 45 Percent Quarter

In the second quarter, surging demand for the developer tool Claude Code pushed revenue up by more than 140 percent compared with the first quarter. The third quarter's roughly 45 percent increase is far below that pace. A summer slowdown is one likely factor, because people typically work less during those months and burn through fewer tokens. Competition also intensified in September, when OpenAI launched a strong competitor with Astra; Anthropic successfully countered with Opus 5.5 only in late September.

Even so, the company's profitability signal strengthened. The Information reported an adjusted operating margin of 11 percent for the year through the third quarter. That figure leaves out major costs such as stock-based compensation, but it shows Anthropic is moving toward profitability. The Financial Times said this was the second straight quarter of adjusted profitability for the AI lab, and the company is cash-flow positive too. During the third quarter, Anthropic generated $1.70 in revenue for every dollar it spent on compute. For the broader AI industry, that suggests trained models can turn a profit despite months of price wars. Caveats remain, including steep training and staff costs and the risk that open-weight alternatives start replacing proprietary models like Claude.

Latest Progress: Distillation Blockers and IPO Price Pressure

Anthropic also estimates that 5 to 7 percent of its revenue comes from distillation, a process in which other companies use Anthropic's AI to extract data about how it works and train their own models. The company has repeatedly accused Chinese AI labs of copying its models this way. It recently rolled out effective countermeasures, raising questions about why Anthropic spent so much time lobbying against distillation if it had the tools to stop the practice all along.

The short-term revenue effect is now becoming clearer. Anthropic told investors that distillation revenue will likely drop and weigh on the current quarter's numbers. Over the long run, blocking distillation should pay off by making it harder for rival model makers to match Claude's quality.

But the disclosed numbers reportedly disappointed some potential investors. Several now expect Anthropic's banking advisors to lower valuation expectations to possibly under $1.5 trillion, especially because the company did not discuss its September annualized revenue rate or a full-year outlook. In July, that rate was reportedly $65 billion. The missing detail matters because the November IPO is no longer being priced on raw growth alone; it is being tested against slowing momentum, distillation revenue loss, and the wider price war involving OpenAI, Anthropic, Google and others, while open models keep closing the performance gap.

Current Stage: A November IPO Under Scrutiny

Anthropic now sits between private-market hype and public-market proof. The timeline runs from a valuation jump to $965 billion in May and a July annualized revenue rate of $65 billion, to a third-quarter $16.8 billion revenue report, 11 percent adjusted operating margin, $1.70 revenue per dollar of compute, and countermeasures against distillation. The next phase will show whether investors accept a valuation below the $2 trillion idea some bankers floated, possibly under $1.5 trillion, before the November IPO window opens. Still, people will almost certainly use more AI in the future rather than less as improving model capabilities work their way into more everyday office jobs.