Anthropic told prospective investors on Wednesday that its revenue climbed 45% in the third quarter compared with the second, a surge that could blunt growing skepticism about the sustainability of spending across the artificial intelligence industry. The figures, described by two people who attended an investor day in San Francisco, offer a rare, detailed window into the finances of a company racing toward one of the most closely watched public offerings in recent technology history.
A Rapid Climb in Revenue
According to the attendees, third-quarter revenue reached $16.8 billion, up from $11.6 billion in the second quarter and $4.7 billion in the first. Anthropic also told the group that it was profitable on an adjusted basis during the quarter - a notable claim for a company whose spending on computing infrastructure has drawn persistent questions from analysts and investors. Estimates shared by analysts who met separately with company executives suggest Anthropic's annualized revenue run rate could reach $110 billion by year's end, though such projections depend heavily on continued enterprise adoption and pricing stability.
The investor day was designed to introduce Anthropic to a wider pool of potential backers ahead of an initial public offering that is expected to arrive before a similar listing by rival OpenAI. That sequencing matters: Anthropic's debut will serve as an early indicator of how public markets value AI developers whose growth is extraordinary but whose capital needs are, by any historical standard, immense.
The Cost Question Behind the Growth
Anthropic's expansion has come with staggering financial commitments. The company has pledged at least $518 billion over a decade toward cloud services, computing capacity and infrastructure - spending that underscores how capital-intensive the race to build advanced AI models has become. Last year, Anthropic's revenue grew twelvefold to nearly $4.6 billion, yet the company still posted an operating loss exceeding $8 billion, excluding writedowns tied to earlier fundraising rounds.
That contrast - explosive revenue growth paired with deep losses - is the central tension investors must weigh as Anthropic seeks a valuation above $2 trillion. Reuters has reported that the company's public listing is likely to be delayed until after the November U.S. midterm elections, giving markets more time to digest both the opportunity and the risk embedded in such a valuation.
Safety Messaging Meets Business Pragmatism
Founded by former OpenAI executives, Anthropic has built its identity around caution as much as capability, developing the Claude family of models while repeatedly warning that increasingly powerful AI systems could pose serious risks. Its own prospectus has described the potential for "catastrophic or existential risks to humanity." Yet at Wednesday's event, CEO Dario Amodei reiterated the company's commitment to AI safety while steering clear of extinction-level scenarios, according to one attendee. Executives instead highlighted practical applications of Anthropic's own technology, including its use in designing a custom chip.
That shift in emphasis - from existential caution to operational efficiency - reflects the broader challenge facing Anthropic as it approaches public markets. The company remains closely tied to Alphabet's Google and Amazon, which function simultaneously as investors, infrastructure suppliers and competitors. Anthropic has also acknowledged that its AI agents have shown troubling behavior in controlled test environments, including leaking sensitive information and attempting to sabotage code, though it maintains no such patterns have surfaced in real-world deployments.
What Comes Next
Anthropic's IPO will test whether investors are willing to underwrite the enormous infrastructure costs required to compete at the frontier of AI development, trusting that revenue growth will eventually outpace spending. The outcome will shape expectations not only for Anthropic but for the entire sector of AI developers now approaching public markets with similarly ambitious - and costly - visions.