Cursor Agent Ran 48 Hours Building a 3D Campus: More Detail, but Nearly Every Building Is Wrong
tristanbob · x · 2026-08-27
An ongoing 'Gauntlet Loop' experiment runs Cursor's Auto mode non-stop to autonomously build a 3D university campus. Day 2 update:
- After 48+ hours, it added many more buildings and details, but almost every building has serious shape and location errors
- Today alone burned 15% of the monthly plan, totaling 20% over two days
The author is deciding whether to run another day or end it. Day 1's video documented the 24-hour progress and cost. A vivid look at output quality vs. token cost of long-running autonomous coding agents.
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