# The Data-Centric AI Manifesto: Why You Should Invest in Data More Than Models

> Source: https://sukruyusufkaya.com/en/learn/veri-etiketleme-kalite/veri-merkezli-ai-manifestosu
> Updated: 2026-05-13T12:53:31.841Z
> Category: Veri Etiketleme & Kalite Yönetimi
> Module: Module 0: Introduction & Framework
**TLDR:** Andrew Ng's 80/20 rule, why data quality matters more than model size in the modern LLM era, data strategies of Tesla/OpenAI/Meta, and why data labeling is an engineering discipline.