AI Dev Weekly #4: Anthropic Leaks Everything, OpenAI Raises $122B, and Qwen 3.6 Drops Free

AI Dev Weekly is a Thursday series where I cover the week's most important AI developer news — with my take as someone who actually uses these tools daily. Anthropic had a rough week. Two separate leaks, a $122 billion competitor, and a Chinese model that just went free. Let's get into it. Anthropic leaks Claude Code's entire source code to npm On Monday, security researcher Chaofan Shou discovered that Claude Code's npm package contained a 60MB source map file that mapped the minified production code back to its original TypeScript source. All 512,000 lines of it. Across 1,906 internal files. This wasn't a hack. The Bun runtime that Claude Code uses generates source maps by default, and someone forgot to strip them before publishing version 2.1.88 to the public npm registry. By the time Anthropic pulled the package, developers had already mirrored the code to GitHub and started picking it apart. What they found: internal APIs, telemetry systems, encryption logic, unreleased agent feat