“I just mass mass accept everything. I don't even look at the diffs. It's not even coding. I just see things, say things, run things, and copy paste things.”- Andrej Karpathy
Lenny covered the vibe coding revolution as it was happening in real time. Lazar Jovanovic became the first official 'vibe coding engineer' at Lovable, a company that hit $200M ARR in under a year with fewer than 100 people. Over 500 builders wrote to Lenny saying they'd shipped real products without writing a single line of code. Andrej Karpathy coined the term 'vibe coding', fully giving in to the vibes, seeing things appear, and not really caring how the code works. It's the most polarizing topic in Lenny's archive.