Pragmatic Thinking by Robbrecht van Amerongen

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Spec Driven Software Engineering

Spec-Driven Agentic Software Engineering Is Not Vibe Coding. Here Is the Difference.

Most teams using AI coding agents are not doing agentic software engineering. They are doing expensive prompt guessing at scale. There is a difference, and it matters more than the tool you picked. The tooling conversation has been loud. Claude Code from Anthropic. ChatGPT Codex from OpenAI. GitHub Copilot, Cursor, Windsurf. A new agent lands…
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“I have never tried that before, so I think I should definitely be able to do that.”

― Astrid Lindgren, Pippi Longstocking

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Spec Driven Software Engineering

Spec-Driven Agentic Software Engineering Is Not Vibe Coding. Here Is the Difference.