## 1. Spec-Driven Development in 2026 ### Code becomes a regenerable output of an executable specification ### Direct response to the failure modes of "vibe coding" ### ~3–10× higher first-pass success rate on non-trivial tasks (early-adopter reports) ## 2. Major Tools ### GitHub Spec Kit (Microsoft / GitHub) ### AWS Kiro (visual + spec) ### Claude Code (Anthropic; integrates SDD via skills + agents) ### Cursor (commercial IDE-agent hybrid) ### OpenSpec (delta-spec, lightweight) ### BMAD-METHOD (multi-agent persona simulation) ### Tessl ### Google Antigravity ## 3. OpenSpec — Profile ### Delta specifications — only what's changing ### Completed specs archive and merge into a source-of-truth document ### Lightweight footprint ### Highest-rated overall in a Feb 2026 13-category evaluation ## 4. BMAD — Profile ### Multi-persona agents (PM, Architect, Builder, Reviewer) ### File-based context passing between roles ### Strict role boundaries ### Most architecturally complex of the major frameworks ## 5. Common SDD Workflow ### Propose → Review → Implement → Archive ### Proposal is the prompt for the implementation agent ### Archive becomes onboarding material and audit trail ### References - https://www.marktechpost.com/2026/05/08/9-best-ai-tools-for-spec-driven-development-in-2026-kiro-bmad-gsd-and-more-compare/ - https://thebcms.com/blog/spec-driven-development - https://medium.com/@visrow/spec-driven-development-is-eating-software-engineering-a-map-of-30-agentic-coding-frameworks-6ac0b5e2b484 - https://medium.com/@ap3617180/steering-the-agentic-future-a-technical-deep-dive-into-bmad-spec-kit-and-openspec-in-the-sdd-4f425f1f8d2b