Claude Generates Over 80% of Production Code at Anthropic

Anthropic claims that over 80% of production code was already generated by Claude in May. The company also indicates that it is hiring a smaller share of junior technical profiles, while a manager states that all programming in her team is now handled by agents.

At Anthropic, over 80% of code and widespread adoption

In May, Anthropic announced that Claude had generated over 80% of the company's production code. The company has expanded the use of Claude Code throughout its organization and reports, in a document published last week, that as AI agents have taken on a more significant role internally, the share of hires for junior technical positions has decreased. Revenue growth slowed in the third quarter. Anthropic is also moving closer to an initial public offering, with a potential valuation of $2 trillion.

Designing on the human side, programming on the agent side

Katelyn Lesse explains that in her team, members design systems and checks, then delegate programming to Claude. During a major migration of a codebase from Python to Rust, employees established a way to verify the final outcome. According to her, agents ensured the building and monitoring throughout this process. She also specifies that Anthropic is already allowing agents to autonomously correct tests without human intervention.

A team of 200 says it entrusts all code to Claude

During Grafana Labs' ObservabilityCON, Katelyn Lesse stated that since this summer, her team of 200 collaborators no longer has humans write code. According to her, all the code produced by her team now comes from Claude. Katelyn Lesse leads platform engineering, which manages essential services, developer tools, and Anthropic's product infrastructure. She notes that Claude Code has eliminated human programming in this core team and mentions efficiency gains. She also discusses the consideration of adapting staff to autonomous modifications of the codebase by agents, given the advancements in AI models over the past year. She adds that engineering managers are "a bit terrified" and wish to proceed with caution, while acknowledging that the situation is evolving.