Latest Bun News & Updates

See the latest news and media coverage for Bun. We track all announcements, press releases, and industry mentions in real time, all in one place.

Bun

JavaScript and TypeScript runtime and developer toolkit

bun.com

Headquarters: San Francisco, United States
Founded year: 2019
Company type: Private company
Number of employees: 2–20
Industry: Software

Last updated Today

Latest news about Bun

In short: Bun was acquired by Anthropic and underwent a significant engine rewrite from Zig to Rust to power AI-driven coding tools.

Company announcements

September 4 Bun

Bun releases v1.4.1 with enhanced performance and stability

The update introduces HTTP/2 support, optimized Buffer operations, improved tree-shaking, and numerous Node.js compatibility fixes.

July 8 Bun

Bun rewrites its runtime from Zig to Rust

The project used Claude Code and adversarial review to port over 535k lines of code in 11 days, and the test suite now passes on all platforms.

April 20 Bun

Bun releases v1.3.13

Introduces bun test --parallel, --isolate, --shard, --changed flags, streams tarballs with 17x less memory, optimizes source maps, upgrades JavaScriptCore.

April 9 Bun

Bun releases v1.3.12

Introduces Bun.WebView for headless browser automation, terminal Markdown rendering, in-process Bun.cron, async stack traces, and numerous performance improvements and bug fixes.

Media coverage

September 11 MSN

The surprising acquisition: Anthropic purchases Bun for AI projects

Anthropic's recent acquisition of Bun, a JavaScript runtime, raises questions about the future of software engineering and AI tools. With Bun's rapid rise and unique...

August 15 Webpronews

ChainDrop Worm Exposes Cracks in npm Defenses as Self-Replicating Malware Poisons 444 Packages

The ChainDrop variant of the Shai-Hulud worm compromised 444 npm packages with 2 billion monthly downloads. It spreads via modified tarballs and dev-tool hooks, evading...

July 9 IBT

Claude Code Rewrote Bun From Zig to Rust in 11 Days, Proving the Code May Take Years

Anthropic's Claude Code helped rewrite Bun from Zig to Rust in 11 days, but developers say long-term maintainability will determine the project's success.

July 8 MSN

The surprising acquisition: Anthropic purchases Bun for AI projects

Anthropic's recent acquisition of Bun, a JavaScript runtime, raises questions about the future of software engineering and AI ...

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