Simon Willison • 1/19/2026

Scaling long-running autonomous coding

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The article details an experiment by Wilson Lin at Cursor using a swarm of hundreds of concurrent autonomous coding agents to build a web browser from scratch. The agents ran for nearly a week, wrote over 1 million lines of code, and produced a functional, though imperfect, browser. It discusses the agent coordination architecture, project results, and the implications for AI-assisted software development.

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#software development #autonomous agents #ai coding
Scaling long-running autonomous coding

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