What would you say is the % lines of code written by you vs an LLM these days? (Auto completion counts as you wrote it)

A decent chunk of YC start ups say 95%

I have 2 thoughts:

1) vibe coding is great for prototypes but the latest trend is a flurry of security issues & high cloud bills in those apps — autopilot in airplanes have been around for ages but we still need an experienced pilot in the cockpit

2) if you establish a clean pattern in a large scale production-grade codebase, commit a markdown file about it so that LLMs can help abide by the pattern when building new features

doing the right thing.
working hard.
being optimistic.
putting the team over the individual.
pushing boundaries with creativity.

eng @ base

A decent chunk of YC start ups say 95%

I have 2 thoughts:

1) vibe coding is great for prototypes but the latest trend is a flurry of security issues & high cloud bills in those apps — autopilot in airplanes have been around for ages but we still need an experienced pilot in the cockpit

2) if you establish a clean pattern in a large scale production-grade codebase, commit a markdown file about it so that LLMs can help abide by the pattern when building new features

https://techcrunch.com/2025/03/06/a-quarter-of-startups-in-ycs-current-cohort-have-codebases-that-are-almost-entirely-ai-generated/

It’s insane but maybe 95%? That said, it takes more effort than it looks to get things really working.