Livecoding Rust with AI: Where Claude Code Helps and Struggles

Jon Gjengset · Demo · 2 h 59 min · 2025 · YouTube title: Vibe coding complex changes in Rust

Why it's here

Pointed to as a non-promotional, realistic long session of an experienced engineer working with AI on non-trivial code.

What it covers

Jon Gjengset spends about three hours livecoding complex changes in a Rust codebase with agentic AI tools, testing his hypothesis that AI is weak at non-pattern work. He documents where Claude Code helps and where it struggles.