Sequoia Capital 2026-04-30-3
Andrej Karpathy: From Vibe Coding to Agentic Engineering
Karpathy's December 2025 trust threshold is a behavioral signal more telling than any benchmark: senior practitioners stopped correcting agent outputs. The sharper insight sits in the MenuGen demo, where one Gemini Nano Banana call replaced an entire Vercel app stack; that collapse turns 'should this app exist at all' into the new build-evaluation primitive for 2026. Verifiability is where iteration compounds, which makes the verification environment, not the model or the prompt, the durable position in agentic AI.