In 11 days, Claude Fable 5 wrote over 1 million lines of code: Rust rewrites JavaScript runtime Bun
Developer Jarred Sumner published a blog post on July 8, announcing that with the help of the Claude Fable 5 model, it took 11 days and cost 165,000 US dollars, having refactored the JavaScript tool Bun, completely rewriting it from Zig to the Rust language.
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