Anthropic is establishing a comprehensive cross-product ecosystem, reminiscent of the highly integrated models utilized by tech giants such as Amazon and Uber, and its S-1 filing indicates this approach is proving successful. Over half of its customers who spend at least $100,000 annually now engage with both the Claude platform and a first-party application like Claude Code or Cowork, a notable increase from approximately 30% at the close of last year.
The S-1, submitted to the Securities and Exchange Commission on Monday, states, “The speed and depth of our enterprise customer adoption are powerful evidence of Claude’s position at the frontier of AI.”
As of September 30, Anthropic reported more than 11,900 customers spending at least $100,000; over 1,900 customers with annual expenditures exceeding $1 million; and roughly 250 customers spending $10 million or more per year.
Anthropic attributes this customer momentum to “significant usage expansion as customers realize the value of deploying Claude across their organizations,” which fueled a net revenue retention of approximately 900% by the end of the third quarter.
Taking a veiled jab at the traditional SaaS industry, Anthropic positions Claude not as a “static product that serves a single use case,” but rather as “frontier AI with rapidly advancing capabilities” encompassing its models, developer platform, and the applications users interact with directly.
The filing explains, “An advance at any layer compounds across all three layers, accelerating the pace at which we can deliver more capable intelligence,” and identifies this “integrated approach” as the reason for more customers using both the Claude Platform and first-party apps.
This playbook is quite familiar. Uber initially sold rides but has since expanded into food delivery and freight. Similarly, Amazon leveraged AWS to draw in customers with cloud computing services before extending those relationships into storage, databases, and other offerings, thereby making its ecosystem increasingly difficult to exit. Like these companies, Anthropic does not need to acquire a new buyer for each product: A business that begins with the API can subsequently deploy Claude Code to its engineers and then Cowork to its broader workforce.
These app users become significantly more valuable. In the third quarter, the highest-spending 5% of Claude Enterprise customers utilizing Claude Code spent roughly 20 times more per month than the average enterprise user who did not employ the coding tool, according to the filing. This discovery highlights the substantial potential for per-user spending growth and explains why Anthropic is eager to integrate its applications into accounts that start with the API.
Anthropic stated it enhances this organic proliferation by investing in Applied AI teams. An internal Applied AI team collaborates with startups and enterprises to facilitate the integration of Claude into customers’ existing technology stacks, and the company recently launched a separate venture, Ode with Anthropic, alongside Blackstone and other private equity firms, to embed forward-deployed engineers into businesses to build bespoke AI tools with Claude.
Anthropic also relies on its third-party distribution partnerships with hyperscalers AWS, Google Cloud, and Microsoft Azure. Under what the filing describes as a “joint go-to-market approach,” Anthropic maintains the direct contractual relationship with customers and pays each cloud provider a fee, a method the company asserts allows it to “avoid channel conflict” and “set pricing.”
Anthropic’s developing stickiness strategy may prove essential as the AI giant aims to constantly “reinvent our business” by introducing “new classes of products whose aim is to dwarf the economic value of our existing ones.” The company intends to dedicate less effort than typical businesses to “entrenching our current products and business models, and more effort to defining new ones.”
Despite impressive revenue growth, reaching $16.3 billion for the first half of 2026, up from $1.2 billion in the same period last year, the filing also flags potential challenges. The cloud partnerships that assist in distributing Claude are increasingly viewing Anthropic as a competitor, which Anthropic warns could lead to difficulties in securing the necessary compute resources from them. The filing indicates that Amazon, Google, and Microsoft may prioritize their own requirements or those of rivals they have invested in.
Customer concentration is another identified risk.
A section of the risk factors states, “Any adverse change in demand from our largest customers…could adversely affect our business and prospects.” It continues, “As a result, a significant reduction in spending by, or the loss of, one or more of our largest customers, if not offset by new customer relationships or increased business from our other existing customers, could adversely affect our business, financial condition, and results of operations.”
Anthropic did not immediately respond to TechCrunch’s request for comment.