LAI #128: Developers Using AI Were 19% Slower. They Thought They Were 20% Faster.

The vibe coding perception gap, plus agent retry patterns, DeepSeek V4 internals, and stateful research agents Good morning, AI enthusiasts! Coding has fundamentally changed in the last five years, and this week, we trace the full arc from Stack Overflow to agents that write themselves. We also tackle one of the most common agent failures in production: what happens when a retry doesn’t know how far the last attempt got. We also cover: How DeepSeek V4 stabilizes