NeMo Data Designer

NVIDIA NeMo Data Designer (formerly Gretel.ai) provides a programmatic way to generate synthetic data through configurable schemas and AI-powered generation models. Users can generate high-quality synthetic datasets from scratch or using seed data. The platform supports flexible schema definition for building production-grade synthetic data with diverse statistical distributions, meaningful correlations between fields, and validated outputs. Nvidia acquired Gretel.ai in 2025 in a nine-figure deal, to generate synthetic AI training data.