Vibe Coding Is Not AI-Assisted Engineering

Author: Addy Osmani · Publication: addyo.substack.com
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Summary: Distinguishes vibe coding from specification-driven AI-assisted engineering, arguing that specifications are the differentiator between amateur and professional AI-augmented development.

Editorial Notes

The most important conceptual boundary in SDD: vibe coding accepts whatever the AI produces and iterates by feel; spec-driven engineering defines what the AI should produce before it starts and validates against that definition. Osmani argues this distinction is not snobbery — it has measurable consequences for code quality, security, and maintainability. This framing helps you decide when vibe coding is acceptable (prototypes, exploration) and when specifications are non-negotiable (production systems, team projects).

Source: Spec-Driven Development

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Link last verified: 2026-04-12