Summary
Developer and creator Theo of t3.gg goes deliberately over the top in this look at running Claude agents for weeks at a time on ambitious projects. Building on his earlier “token maxing” advice, he shows what happens when each prompt can burn hundreds of dollars in compute, with Claude logging nearly 4,000 hours across his accounts.
The projects include TS Rust, a rewrite of TypeScript in Rust that he says compiles four to ten times faster, and Lust, a drop-in Cargo replacement that compiles a subset of Rust a hundred times faster or more. He also walks through an attempt to recreate the game Skate with Claude Opus 5.5, where the model screenshots its own builds, compares them with footage from the original game, and uses a panel of LLM judges to give feedback.
The central lesson is the hill-climbing approach: give the model a goal it can check itself against, and it can keep iterating for long stretches. Theo also covers the failure modes, such as roughly $800 in tokens spent tuning a skybox and the model chasing the wrong reference game. He stresses that this is not practical advice for most developers, but a look at what is now possible and what it costs. The video is sponsored by Browserbase.
📺 Source: Theo – t3․gg · Published October 28, 2026
🏷️ Format: Workflow Case Study
