Claude Code uses Bun written in Rust now

Re:Claude Code uses Bun written in Rust now by pdimitar on Sunday July 19, 2026 @09:03PM (#48973288)

I didn't claim that the cost is the prohibiting factor at all. Obviously they gave Jarred free Fable access and to do as his pleases. The cost was an FYI tidbit and nothing more.

What I argued was that you seemed to have been arguing an extreme point i.e. LLMs can one-shot stuff in any PL and that it does not matter in what PL they'd rewrite Bun.

If I misunderstood -- my apologies.

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Re:Claude Code uses Bun written in Rust now by coldtea on Monday July 20, 2026 @06:05AM (#48976620)

Well, I never said anything about one-shotting it.

What I said is, those AI companies push LLMs as the replacement of programmers, that can do everything code-wise, say their programmers "don't write code anymore" etc.

So how come they can't have the LLM write something better than "react for cli" for their flagship agent product?

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Re:Claude Code uses Bun written in Rust now by pdimitar on Monday July 20, 2026 @06:23AM (#48976778)

My only half-decent guess: they deem it too big and risky and believe they'll lose revenue while working on it and ironing out remaining kinks.

Claude Code is likely not well-specified and it's a product of rapid iteration and now nobody really knows how the whole thing works. LLMs don't do well when requirements are muddy.

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