Gretel.ai

Gretel.ai gave developers APIs to generate privacy-safe synthetic data for training and testing AI models, letting teams share realistic datasets across the organization or augment small training sets without exposing real personal information, plus tools for measuring privacy guarantees like differential privacy. Nvidia acquired Gretel in 2025 to strengthen its own synthetic data capabilities for AI model training, folding what had been an independent platform into Nvidia's broader AI infrastructure stack.