Re:Claude Code uses Bun written in Rust now
by jm4 on Sunday July 19, 2026 @01:44PM
(#48970135)
Probably because it consumes the same APIs originally developed for a web app and the same front end engineers likely created Claude Code. People assume Anthropic set out to create Code as a product and went through a normal design phase. I think it’s more likely it started as an internal tool or someone’s side project and blew up as a product when they released it to the public.
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