The age of vibe coding is over — and spec-driven development is taking over the AI coding world. In this video, we break down the battle between GitHub’s Spec Kit and Fission AI’s OpenSpec, two revolutionary toolkits designed to make AI-assisted software development structured, testable, and fully aligned with human intent. 💻 GitHub Spec Kit introduces a powerful 4-phase workflow — Specify, Plan, Tasks, Implement — turning every AI coding session into a precise, reviewable process. Perfect for greenfield projects and enterprise-level teams that need clarity, compliance, and traceability. ⚡ Fission AI OpenSpec, on the other hand, brings a lightweight and flexible spec-driven workflow to existing projects. With simple commands like /openspec:proposal and /openspec:archive, it integrates seamlessly with AI coding assistants like Claude Code, Cursor, and GitHub Copilot. Ideal for brownfield projects, agile teams, and fast-moving startups. Discover how Spec Kit and OpenSpec redefine AI software development, eliminate “vibe code,” and turn your specifications into a living source of truth. Whether you’re building from scratch or improving existing code, these tools mark the future of AI-powered development. #GitHubSpecKit #FissionAI #OpenSpec #SpecDrivenDevelopment #AICoding #AIDevelopment #AIProgramming #GitHubAI #ClaudeCode #CursorAI #AICodingTools #AIWorkflow #SoftwareEngineering #GreenfieldProjects #BrownfieldProjects