OpenAI's introduction of "Scaling Laws" in 2020 marked a significant era in AI development, where larger models trained on more data consistently demonstrated improved performance. However, as this approach faces practical limitations due to data scarcity, the focus is shifting towards data quality rather than quantity. This transition was exemplified by DeepSeek's cost-effective model, which emphasized curated, high-quality datasets over large volumes of data, causing a significant shift in the market. Consequently, AI companies are now prioritizing data quality metrics, precise annotation tools, and expert human feedback, reallocating budgets from compute to data curation. This change signifies a move towards AI craftsmanship, where the emphasis on quality makes AI more accessible and effective, marking the beginning of a new frontier in AI development.