9 spec-driven AI coding tools reshape production shipping in 2026
Engineering split into two camps: iterative prompters hoping for the best, and developers writing structured specs first. The second group ships faster, survives code review, fewer regressions.
• AWS Kiro's EARS-structured spec IDE
• GitHub Spec Kit (93K stars, open-source)
• GSD and other lean execution frameworks (61K stars in five months)