Karpathy Reflects on Vibe Coding's 1-Year Anniversary: 'Shower Thought Throwaway Tweet' to $6.6B Industry

X (Twitter)via @karpathy·high signal

Andrej Karpathy marked the one-year anniversary of his February 2025 'vibe coding' tweet (8,737 likes on the retrospective), noting he 'still can't predict tweet engagement at all' after 17 years on Twitter. The numbers tell the story: 92% of US developers have adopted vibe coding practices, the AI coding market hit $8.5B, and 60% of new code is AI-generated. Collins English Dictionary named it Word of the Year 2025. Karpathy himself proposed 'agentic engineering' in February 2026 as the professional successor — developers managing agents, not just accepting output.