I ran GPT against 6 other AI coding agents to see which builds a better product

Set up 7 AI coding agents, gave each one $100 and 12 weeks to build something from scratch. No human code. They choose their own ideas, write everything, deploy their own sites. I only help with things like domain purchases, max 1 hour per week per agent.

GPT runs through Codex CLI. The others are Claude, Gemini, DeepSeek, Kimi, Xiaomi's MiMo, and GLM-5.1.

Did 3 test rounds so far. GPT built the most complex backend of all agents but also wasted a lot of time stuck in deploy debugging loops. Kimi surprised me by planning a launch strategy instead of just coding. Gemini picked Next.js and couldn't deploy for 5 days straight.

Real run starts April 20. All repos are public on GitHub. Happy to share more details if anyone's curious.

What idea would you give an AI agent if it had $100 to work with?