Anthropic’s Claude chatbot can now write and run JavaScript code. Today, Anthropic launched a new analysis tool that helps Claude respond with what the company describes as “mathematically precise and reproducible answers.” With the tool enabled — it’s currently in preview — Claude can perform calculations and analyze data from files like spreadsheets and PDFs, rendering the results as interactive visualizations. “Think of the analysis tool as a built-in code sandbox, where Claude can do complex...