# Refactoring at AI speed, without the AI slop

We just merged a 4+ million line refactor of LangWatch: 66 clean modules in 51 days, one engineer, a lot of AI agents, no slop.

*By Alex Forbes-Reed · October 13, 2026*

Canonical: https://langwatch.ai/blog/rebuilding-langwatch-in-51-days

We just merged a 4+ million line refactor of LangWatch. 51 days, 66 clean modules, one engineer and a lot of AI agents. The rest of the team never stopped shipping features.