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AI Will Never Recommend Rust for Your Weekend Project. That’s the Point.
When AI makes code free, the expensive language becomes the honest signal.
“Rust and AI” was the thread running through this year’s conference circuit. At RustConf 2026 in Montreal, one session looked at how AI-assisted Rust code writing is increasing in both open-source and production environments, drawing on lessons from maintaining an open-source crate to examine where AI genuinely accelerates development and where it consistently struggles. A sponsored talk opened with the warning that AI makes it tempting to let agents rewrite whole systems to scale faster. In Paris, the Rust day included a session on securing Rust code in practice through fuzzing, AI, and field experience.
Underneath all of it sits an old complaint that suddenly looks different.
The Complaint Everyone Knows
Rust is expensive. Compilation burns CPU. The target/ directory quietly eats tens of gigabytes. And AI generates Rust noticeably slower than Python or TypeScript, because it spends half its time in a compile, fail, fix loop with the borrow checker.
All true. But flip the lens and that cost starts to look like a feature.
