The Register reports on the backlash to Ruby on Rails creator David Heinemeier Hansson’s benchmark comparing agent-written rewrites of his company’s Campfire chat app in Elixir, Go and Rust against the original Rails version. His chart showed Rust well ahead across five tasks, but critics argued the Rust port received far more post-generation tuning than the one-shot Go and Elixir implementations, and some rewrote the Elixir code to match or beat Rust, leading Google engineer Jaana Dogan and others to call the measurement flawed. DHH, who told Rails World 2026 that AI has all but eliminated the need to hand-write code, responded that agents can only use the go-fast switches they find and that language choice involves more than raw speed. The episode underlined that AI-generated work still needs review rather than trust.
Rails originator roasted over Rust boosterism
The Register reports on the backlash to Ruby on Rails creator David Heinemeier Hansson's benchmark comparing agent-written rewrites of his company's Campfire chat app in Elixir, Go and Rust against the original Rails version. His chart showed Rust well ahead across five tasks, but critics argued the Rust port received far more post-generation tuning than the one-shot Go and Elixir implementations, and some rewrote the Elixir code to match or beat Rust, leading Google engineer Jaana Dogan and others to call the measurement flawed. DHH, who told Rails World 2026 that AI has all but eliminated the need to hand-write code, responded that agents can only use the go-fast switches they find and that language choice involves more than raw speed. The episode underlined that AI-generated work still needs review rather than trust.
Source: The Register