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Anthropic rewrote its Messages API in Rust. Zero Rust devs on the team. Claude wrote the code. Humans wrote the plan and checked old vs new matched on real traffic. CPU dropped 40-50%. Pretty sure "never do the big rewrite" is dead advice. Katelyn Lesse on Latent Space: AI... show more
741,611 görüntüleme • 4 gün önce •via X (Twitter)
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@katelyn_lesse @latentspacepod Assuming they have AI forever

@katelyn_lesse @latentspacepod true for most teams. Anthropic's the last place that loses access to Claude

@katelyn_lesse @latentspacepod Anyone who doesn't do what they did, in 2026, should not be in this industry.

@katelyn_lesse @latentspacepod Yeah if anything you catch a million bugs in doing so.

@katelyn_lesse @latentspacepod Still waiting for Claude Code to be rewritten in #rust. Tired of these JS/TS apps

@katelyn_lesse @latentspacepod The advice "never do a big rewrite" applies to different systems. If all business logic is contained in the source code and there is 1:1 mapping of functions or easy addition of necessary functions then why not?

@katelyn_lesse @latentspacepod also if enough token power, can create another anothropic company

@katelyn_lesse @latentspacepod I mean, it depends on your service and token budget the bun rewrite cost $165,000 in tokens there are only so many services that are worth a $100K+ rewrite

@katelyn_lesse @latentspacepod

@katelyn_lesse @latentspacepod That’s why y=they need all the world hardware

@katelyn_lesse @latentspacepod and burned how many tokens? what was their development strategy?

@katelyn_lesse @latentspacepod I made the plans and my keyboard wrote around bilion lines of code in many languges and rust! And this is not a joke FYI

@katelyn_lesse @latentspacepod System design will be done by ai and eventually these podcasts as well .

@katelyn_lesse @latentspacepod big rewrites died because nobody could prove parity. old vs new on real traffic is the actual advice here, the model just made it cheap to try

@katelyn_lesse @latentspacepod *big* rewrite.

@katelyn_lesse @latentspacepod That sounds like the compiler finally became the senior engineer on staff.
