Claude Code’s top enterprise users outspend other Claude users 20 to 1, Anthropic’s IPO filing says

Anthropic’s IPO filing puts Claude Code at the center of its growth story. The company filed to go public on Nasdaq on Monday, and the S-1 says the product is doing more than helping people code: it is pulling customers into Anthropic’s enterprise stack and pushing spending up once it’s inside a company.

The filing draws a sharp split between casual enterprise users and the heaviest ones. The average Claude Enterprise user without Claude Code spent less than $75 a month in the third quarter. The top 5% of Claude Code users on Enterprise spent about 20 times that. That is a very clean land-and-expand story, and Anthropic says Claude Code often lands first in an engineer’s hands, then spreads internally until sales show up and find “Claude is often already in use.”

Anthropic is not shy about what it thinks Claude Code represents. The company calls it “the product we believe has most concretely defined what autonomous AI work looks like,” and says non-technical teams are adopting it too. That matters because the tool started in the terminal, which makes its broader reach more interesting than a simple coding assistant story.

The revenue numbers in the filing back up the pitch. Anthropic says it had more than 11,900 customers paying $100,000 or more over the trailing 12 months as of September 30, 2026, up from more than 950 a year earlier. Revenue reached $16.3 billion in the first half of 2026, up from $1.2 billion in the same period in 2025, and token usage made up 50% of that.

The filing also shows how deep Claude has gone inside Anthropic itself. The company says Claude wrote more than 90% of the contributions to its codebase in September, and that the average engineer produced more than 45 times as much code per day in the third quarter as in 2024. But Anthropic also warns that problems with Claude Code could directly hurt its ability to build and ship future models, and says more AI-driven engineering could make parts of the company harder for humans to understand and control. Anthropic plans to list under the ticker ANT, with no price range disclosed.