Jarred Sumner rewrote Bun from Zig to Rust in 11 days using 64 Claude Fable 5 agents, costing about $165,000, resulting in a 20% smaller binary, 2-5% higher HTTP throughput, and 128 fixed bugs. Andrew…
Bun shipped an AI-driven rewrite from Zig to Rust in eleven days, spending about $165,000 in API costs to generate over a million lines of Rust that passed Bun's assertion suite at 100 percent. Zig cr…
Bun creator Jarred Sumner used Claude AI agents to rewrite the JavaScript runtime from Zig to Rust in 11 days at a cost of $165,000, converting 500,000 lines of code at 1,300 lines per minute. The mig…
Zig creator Andrew Kelley banned all LLM-generated contributions across Zig repositories, calling AI-generated code "invariably garbage" that drains maintainer time, after Bun's AI-driven rewrite from…
Anthropic's Claude Code now supports dynamic workflows that replace the context-window ceiling with a JavaScript-based orchestration script, spawning up to 64 subagents per task. Jarred Sumner, creato…
Bun, the JavaScript toolkit with over 22 million monthly CLI downloads, is being rewritten from Zig to Rust, founder Jarred Sumner announced on July 8. The rewrite, aided by Anthropic's Claude Fable 5…
Bun, the JavaScript runtime, has been fully rewritten from Zig to Rust using Anthropic's Claude Fable 5 AI model, which generated over a million lines of code in 11 days at a cost of $165,000. Develop…
Bun creator Jarred Sumner used Anthropic's Fable AI to rewrite the JavaScript runtime from Zig to Rust in 11 days, costing $165,000 in tokens, a task that would have taken a small team a year. The mig…
Bun ported its production JavaScript runtime from Zig to Rust in six days using an AI agent, with no human reading the million-line diff before merge. The rewrite succeeded because Bun's TypeScript te…
Bun creator Jarred Sumner used an LLM-powered coding agent to port the runtime from Zig to Rust in 11 days, rewriting over one million lines of code. The rewrite was enabled by Bun's existing TypeScri…
Anthropic's Claude Code dynamic workflows enabled Jarred Sumner to port 750,000 lines of Zig to Rust with 99.8% of Bun's test suite passing in eleven days by codifying orchestration in JavaScript scri…
In May 2026, the Bun team rewrote its entire runtime from Zig to Rust in six days using AI agents, converting approximately 570,000 lines of Zig into 682,000 lines of Rust. The migration achieved a 99…
Anthropic's AI agents rewrote Bun's entire codebase from Zig to Rust in nine days, merging a million-line pull request on May 14 that passed 99.8% of existing tests but introduced over 10,000 `unsafe`…
Anthropic's Claude Code introduced deterministic multi-agent orchestration workflows, enabling developers to script parallel agent execution, fan-out, reduce, and synthesis patterns. A 130-line workfl…
Bun version 1.3.12 introduces native headless browser automation via `Bun.WebView`, supporting both WebKit and Chrome backends with OS-level event dispatching. The update also adds the ability to rend…
Based on the article, Bun version 1.3.10 introduces a completely rewritten REPL in Zig that starts instantly with features like syntax highlighting, persistent history, and top-level await support. Th…
Anthropic has acquired the company behind Bun, the high-performance JavaScript runtime, bundler, and package manager. Bun will remain open-source under the MIT license, will continue to be actively ma…
Bun v1.3.1 introduces significant performance improvements, including up to 2x faster builds for projects using isolated linkers or symlinks, and faster installs by removing an unnecessary sleep() cal…