Bun, a JavaScript runtime, has been acquired by Anthropic, a company focused on AI coding tools. The acquisition aims to integrate Bun into Anthropic's products, such as Claude Code, and provide long-term stability for Bun's development. Bun will remain open-source and MIT-licensed, with the same team continuing to work on it. The acquisition is seen as a strategic move to position Bun as a key infrastructure for AI-driven software development.