Tuesday, December 2, 2025

Anthropic Acquires Bun

Jarred Sumner (via Hacker News):

Bun has been acquired by Anthropic. Anthropic is betting on Bun as the infrastructure powering Claude Code, Claude Agent SDK, and future AI coding products & tools.

[…]

  • Bun stays open-source & MIT-licensed
  • Bun continues to be extremely actively maintained
  • The same team still works on Bun
  • Bun is still built in public on GitHub
  • Bun’s roadmap will continue to focus on high performance JavaScript tooling, Node.js compatibility & replacing Node.js as the default server-side runtime for JavaScript

[…]

Instead of putting our users & community through “Bun, the VC-backed startups tries to figure out monetization” – thanks to Anthropic, we can skip that chapter entirely and focus on building the best JavaScript tooling.

Previously:

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