Anthropic's Cat Wu leaves, recalls building RL env with zero hand-written code via Claude Code
daniel_mac8 · x · 2026-11-04
Cat Wu announced her last day at Anthropic, recalling that two years ago she used the then-internal Claude Code to build an RL environment, steering it for tens of hours without manually writing a line of code — an experience that got her hooked and led her to join the team. She notes usage has shifted from hand-approving every permission prompt toward more autonomous workflows.
Related event: Claude Code Early Member Cat Wu Announces Departure from Anthropic(15 posts)→
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