Getting a customer to try your AI product is one thing. Getting them to use it across their entire company – and spend significantly more money over time – is a completely different game. Anthropic appears to be cracking that challenge. More than half of its enterprise customers spending at least $100,000 annually now use both its Claude platform and products such as Claude Code or Cowork, up from around 30% at the end of 2025. For founders, this reveals an important shift in the AI market: the biggest opportunity may not be winning a customer’s first purchase, but becoming useful enough that they keep coming back.
1. Stop Selling One Tool. Start Solving the Next Problem.
Imagine a company starts using your AI tool to help its developers write code. The team likes it. Then another department asks whether the same technology can help automate everyday office tasks. Suddenly, one customer has a reason to buy another product from you.
That is the logic behind Anthropic’s expanding product ecosystem. Businesses can start with the Claude platform and later adopt Claude Code for developers or Cowork for broader workplace tasks. The numbers are striking. By September 30, 2026, Anthropic reported more than 11,900 customers spending at least $100,000 annually, including over 1,900 spending more than $1 million and approximately 250 spending $10 million or more.
The lesson for founders isn’t to build ten products immediately. It’s to understand what your customers will need after your first product succeeds.
What should you do? Map your customer’s journey. If they buy your product today, what problem will they face next month? Build around that natural next step instead of launching unrelated features just to look innovative.
2. Your Best Growth Strategy Might Be Inside Your Existing Customer Base
Many startups spend heavily on advertising, sales teams, and lead generation while overlooking customers they have already won.
Anthropic’s figures suggest why that can be a mistake. Its filing reported net revenue retention of around 900% at the end of the third quarter. This is an unusually high figure, reflecting substantial expansion in spending among its existing customer base—not a typical benchmark for startups.
For a smaller business, the principle is more useful than the number. Existing customers already know your product, and you have evidence of what they value. Helping them get more value can be easier than convincing a complete stranger to buy. Consider a startup selling AI software to recruitment agencies. It might begin by helping recruiters screen applications. Once customers trust the tool, the company could expand into interview scheduling or candidate communication.
Instead of constantly chasing new accounts, the startup creates additional value for customers it already serves.
What should you do? Talk to your five most engaged customers. Ask what still takes too much time, what they currently pay another provider to solve, and what would make your product indispensable. Their answers could reveal your next revenue opportunity.
3. One Product Can Open the Door to an Entire Organisation
Anthropic’s strategy also highlights the power of expanding from one team to many.
A company might initially purchase AI access for its engineering department. If the technology proves useful, finance, operations, marketing, and other teams may want access too. Anthropic reported that its highest-spending 5% of Claude Enterprise customers using Claude Code spent approximately 20 times as much per month as the average enterprise user who did not use the coding tool.
That does not mean every AI startup can multiply customer spending by 20. It does show how a product used deeply by a valuable customer segment can create room for expansion.
For founders, this changes how you think about product adoption. A successful trial with one employee is encouraging. A product that becomes part of a team’s regular workflow is more valuable. A product adopted across several departments can have an even greater role in the organisation.
At Tepi AI, we help founders discover startup funding, grants, accelerators, incubators, competitions, and opportunities that support their next stage of growth.
Explore https://tepiai.com to find opportunities that can help you build smarter and grow with purpose.
