This week in AI coding news brought mixed results. Vibe coding became mainstream in businesses like Microsoft and Vanguard, speeding up prototyping by 40%. Nearly 90% of engineering teams now use AI tools such as GitHub Copilot. These tools shifted developer focus from maintenance to innovation and reduced task sizes by 16%.

However, a surprising study found experienced developers took 19% longer when using AI tools. Researchers noted AI works best for simple tasks like refactoring, not complex design. Companies still require human oversight for production-ready code.

These developments show AI's uneven impact: boosting beginners while slowing experts on complex projects.