Process

AI development Spec-Driven Development Tools: What Each One Is, From a Team That Uses None of Them Spec Kit, Kiro, OpenSpec, BMAD and Tessl, read from their own docs and changelogs rather than their launch posts. What each actually is, what it costs to adopt, and why the tool layer churns while the practice does not. Aug 2026 AI development Spec-Driven Development: What Actually Changes When the Doc Comes First Most explanations of spec-driven development define the term. This is the loop we actually run, why the spec became the reviewable artifact once a model could write the code, and what it costs to keep it running. Aug 2026