AI Tools Kit
AI Tools Kit provides free developer tools for working with AI language models. Built by developers, for developers.
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Stanford AI Index 2026: SWE-bench Saturated, Transparency Collapsing, China 2.7pp Behind
The 2026 AI Index dropped April 13 and the headline is that SWE-bench Verified went from 60% to nearly 100% in a single year while the top Chinese model now trails Anthropic's best by just 2.7 percentage points.
The Claude Code Source Leak: What 512,000 Lines of Code Revealed
Anthropic accidentally shipped Claude Code's full source in an npm package. Inside: KAIROS daemon mode, undercover mode, frustration detection, fake tools, a Tamagotchi companion, and 44 feature flags.