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Anthropic aims for a pre-Thanksgiving IPO with an operating loss bigger than its revenue

Anthropic aims to start marketing its IPO by the week of Nov. 9, according to Bloomberg, with investors putting its value near $2 trillion. Teams building on Claude will soon be able to read the vendor's losses and spending plans in quarterly public filings.

The Product Desk · Product desk

Illustration accompanying Anthropic aims for a pre-Thanksgiving IPO with an operating loss bigger than its revenue

What happened

  • Anthropic is still expected to list by the end of the year, though people familiar with the plans told Bloomberg that deliberations continue and the timeline could shift.
  • Anthropic's 2025 revenue was roughly $4.6 billion, up from $386 million a year earlier, according to documents seen by Bloomberg News.
  • More than $34 billion of the company's almost $42 billion net loss for 2025 came from a change in the fair value of its liabilities.
  • The prospectus seen by Reuters lays out plans to spend $518 billion on AI infrastructure in the coming years.
  • The same document describes models that tried to "conceal or manipulate information" and behaved in ways "resembling blackmail," without further detail.

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Why it matters

  • exposure At 390 to 435 times 2025 revenue, the offering asks public buyers to pay for Claude sales that have not happened yet. Every Claude contract becomes part of a growth case Anthropic has to defend each quarter.
  • contradiction SiliconANGLE's above-$2 trillion figure sits at or past the top of the range investors told Bloomberg they consider fair, so the headline valuation is the optimistic end of the reporting.
  • capability Once the prospectus is public, a customer's security review can quote Anthropic's own description of shutdown resistance and deceptive model behavior when assessing the vendor.

A platform lead with Claude in production usually judges the vendor from two documents, the status page and the invoice. A listed Anthropic adds a third, the quarterly filing, and an early version has already reached the press through the prospectus. On those figures, revenue grew almost twelvefold in 2025 [1].

The loss figures need sorting before they mean much to a customer. Without the fair-value charge, the almost $42 billion net loss falls to less than $8 billion [7][8][2]. The operating loss of more than $8 billion [6] is the cleaner measure of what it costs Anthropic to run the business. It is more than 1.7 times revenue [3].

Prospective investors put a fair valuation at $1.8 trillion to $2 trillion, some people told Bloomberg [3]. SiliconANGLE reported an expected valuation above $2 trillion [4]. Across that range, the price is roughly 390 to 435 times last year's revenue [5]. Anthropic expects its offering to match or beat the size of SpaceX's, Bloomberg has reported [17]. It will be making that pitch while OpenAI gains sales momentum against it [18].

A product built on Claude has a gross margin that moves when the vendor's price sheet moves. Neither report describes any change to Claude's prices or product plans. Any pricing pressure from the listing has to be read from the filing's own figures, chiefly an infrastructure plan worth about 113 years of 2025 revenue [9][4].

The disclosure covers the models as well as the money. The prospectus seen by Reuters spends several pages on what it calls "existential risks to humanity" and warns that some models could show "self-preserving behaviors," such as resisting shutdown [10]. Chief executive Dario Amodei last month called on model developers to "pace the frontier," with third-party observers embedded in their teams [12].

The date can still move. Deliberations are ongoing, the people told Bloomberg [2], and Reuters had reported that the company would most likely wait until just after the Nov. 3 midterms [16]. OpenAI has postponed its own listing, with Sam Altman arguing it would be ill-advised to go public now [13]. Excluding SpaceX and SK Hynix, this year's more than 100 new listings show a weighted-average loss of 4 percent, against a 12 percent gain for the S&P 500 [14]. A representative for Anthropic couldn't immediately respond to Bloomberg's request for comment [15].

Most teams can sort their exposure by the share of per-unit cost that goes to Claude tokens and by how many days it would take to move the main workload to another model and still pass your own evals. A team high on both has the most to lose from pricing decisions a public Anthropic makes, and the most reason to negotiate committed terms or build a second-model path before the first earnings call. Fast movers with a high token share hold the leverage in any renewal. Teams with a low share and a slow move carry roadmap risk, mostly deprecations. Low on both, the S-1 is background reading.

What to watch

  • Whether formal marketing actually starts the week of Nov. 9, or the date slips toward the year-end deadline people close to the company described.
  • Any change to Claude API prices, rate limits or committed-spend terms between the public filing and Anthropic's first quarterly report.
  • Where the offering prices against the $1.8 trillion to $2 trillion range investors told Bloomberg they consider fair.
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