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Anthropic reportedly rewrote Messages API backend in Rust, with Claude writing the code

1 article1 sourcesince Oct 30Last article 2h ago ·

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Anthropic reportedly rewrote its Messages API backend in Rust, with Claude writing the code, according to a post by @somi_ai that Swyx (@swyx) cited on X. The post says the team had no Rust developers, humans wrote the plan and checked that the old and new systems matched on real traffic, and CPU use dropped 40-50%.

These claims come from the social media posts; the reports do not include an Anthropic statement or independent measurements.

Written by AI from the articles below · updated Oct 30, 7:23 PM ET

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Latest developmentOct 30, 7:05 PM ET
Anthropic rewrites its Messages API backend in Rust using Claude

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Oct 30
  1. swyxX
    Anthropic rewrites its Messages API backend in Rust using Claude

    AISwyx says Anthropic rewrote its entire backend in Rust without noticing, citing a post from @somi_ai. The post says Claude wrote the code, the team had no Rust developers, and CPU use dropped 40-50%. Humans wrote the plan and checked the old and new systems matched on real traffic.

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