Two days to a working application. Three minutes to a live hotfix. Fifty thousand lines of code with comprehensive tests.

Spec-Driven Development sets written specs before AI coding; a 4-step flow links requirements, design docs, tests, and QA.

Having long ago seen the handwriting on the wall for the journalism profession with the debut of GenAI, I decided to just cut to the chase and build my replacement now.

GitHub Copilot CLI is now generally available for all paid Copilot subscribers, offering agentic workflows, multiple AI model support, and specialized agents for terminal-based development.