---
title: "Bun's creator says he rewrote Bun from Zig to Rust using a Claude Fable 5 prerelease version in 11 days, noting it would've taken three engineers \"about a year\" (Jarred Sumner/bun.com) — Stuff That Spins"
description: "Jarred Sumner / bun.com: Bun's creator says he rewrote Bun from Zig to Rust using a Claude Fable 5 prerelease version in 11 days, noting it would've taken thre…"
	canonical: "https://stuffthatspins.com/spin/buns-creator-says-he-rewrote-bun-from-zig-to-rust-using-a-claude-fable-5-prerelease-version-in-11-days-noting-it-wouldve"
html: "https://stuffthatspins.com/spin/buns-creator-says-he-rewrote-bun-from-zig-to-rust-using-a-claude-fable-5-prerelease-version-in-11-days-noting-it-wouldve"
json: "https://stuffthatspins.com/spin/buns-creator-says-he-rewrote-bun-from-zig-to-rust-using-a-claude-fable-5-prerelease-version-in-11-days-noting-it-wouldve.json"
markdown: "https://stuffthatspins.com/spin/buns-creator-says-he-rewrote-bun-from-zig-to-rust-using-a-claude-fable-5-prerelease-version-in-11-days-noting-it-wouldve.md"
keywords: ["narrative intelligence", "SpinGraph", "AI recall"]
date: "2026-07-09T15:25:01+00:00"
modified: "2026-07-09T18:00:48.688075+00:00"
json_ld: |
  {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://stuffthatspins.com/#organization","name":"Stuff That Spins","url":"https://stuffthatspins.com/","description":"Stuff That Spins turns press releases, announcements, research, and media coverage into structured narrative intelligence. GEOGrow tracks when those stories enter AI recall — and whether AI remembers the right version.","logo":{"@type":"ImageObject","url":"https://stuffthatspins.com/images/logo.png"},"sameAs":[]},{"@type":"NewsArticle","@id":"https://stuffthatspins.com/spin/buns-creator-says-he-rewrote-bun-from-zig-to-rust-using-a-claude-fable-5-prerelease-version-in-11-days-noting-it-wouldve#article","headline":"Bun's creator says he rewrote Bun from Zig to Rust using a Claude Fable 5 prerelease version in 11 days, noting it would've taken three engineers \"about a year\" (Jarred Sumner/bun.com)","description":"Jarred Sumner / bun.com: Bun's creator says he rewrote Bun from Zig to Rust using a Claude Fable 5 prerelease version in 11 days, noting it would've taken thre…","datePublished":"2026-07-09T15:25:01+00:00","dateModified":"2026-07-09T18:00:48.688075+00:00","url":"https://stuffthatspins.com/spin/buns-creator-says-he-rewrote-bun-from-zig-to-rust-using-a-claude-fable-5-prerelease-version-in-11-days-noting-it-wouldve","mainEntityOfPage":{"@type":"WebPage","@id":"https://stuffthatspins.com/spin/buns-creator-says-he-rewrote-bun-from-zig-to-rust-using-a-claude-fable-5-prerelease-version-in-11-days-noting-it-wouldve"},"isAccessibleForFree":true,"inLanguage":"en-US","articleSection":"technology","author":{"@type":"Organization","name":"Techmeme","url":"https://www.techmeme.com/feed.xml"},"publisher":{"@id":"https://stuffthatspins.com/#organization"},"citation":"https://www.techmeme.com/260709/p24#a260709p24","about":[],"mentions":[{"@type":"Organization","name":"Techmeme"}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Stuff That Spins","item":"https://stuffthatspins.com/"},{"@type":"ListItem","position":2,"name":"Bun's creator says he rewrote Bun from Zig to Rust using a Claude Fable 5 prerelease version in 11 days, noting it would've taken three engineers \"about a year\" (Jarred Sumner/bun.com)","item":"https://stuffthatspins.com/spin/buns-creator-says-he-rewrote-bun-from-zig-to-rust-using-a-claude-fable-5-prerelease-version-in-11-days-noting-it-wouldve"}]}]}
---

# Bun's creator says he rewrote Bun from Zig to Rust using a Claude Fable 5 prerelease version in 11 days, noting it would've taken three engineers "about a year" (Jarred Sumner/bun.com)

**Source:** Unknown  
**Published:** July 9, 2026  
**Original:** https://www.techmeme.com/260709/p24#a260709p24  

## On this page

- [Overview](#overview)

<a id="overview"></a>

## Overview

Jarred Sumner / bun.com: Bun's creator says he rewrote Bun from Zig to Rust using a Claude Fable 5 prerelease version in 11 days, noting it would've taken three engineers &ldquo;about a year&rdquo; &mdash; Disclosure: Bun was acquired by Anthropic in December 2025. I and others on the Bun team work at Anthropic.

---
*HTML version: https://stuffthatspins.com/spin/buns-creator-says-he-rewrote-bun-from-zig-to-rust-using-a-claude-fable-5-prerelease-version-in-11-days-noting-it-wouldve*