Top Anthropic engineer says Claude now writes 'literally all' her team's code
At Grafana Labs' ObservabilityCON, Anthropic engineering leader Katelyn Lesse says that Claude Code has completely replaced human coding on her team.
Katelyn Lesse, who leads Anthropic's platform engineering group, claims that Claude Code now writes all code for her team of 200 employees. Speaking at Grafana Labs' ObservabilityCON event, Lesse said that Claude is responsible for "literally all" of the team's code, marking a complete transition from human-written code. Anthropic, which is nearing an initial public offering that could be valued at nearly $2 trillion, has become highly efficient thanks to Claude Code's assistance.
While team members continue to design systems and verifications, the actual coding is offloaded to Claude. Lesse mentioned that the company recently changed a major codebase from Python to Rust, but the team developed a verification process for the final product. Anthropic also allows agents to autonomously fix tests and make changes to the codebase, though the company remains cautious about this shift.
The AI startup has already seen a reduction in junior technical positions as Claude Code writes over 80% of the company's production code.
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