The entire source code for Anthropic’s Claude Code command line interface application (not the models themselves) has been leaked and disseminated, apparently thanks to a serious internal error.

A recent leak involving Anthropic has unexpectedly pulled back the curtain on a set of unreleased features for its AI coding assistant, Claude, offering a rare glimpse into the company’s future ambiti...

Within hours, the massive 512,000-line TypeScript codebase was copied across GitHub and studied by thousands of developers.