Fireworks AI has developed an innovative synthetic data pipeline designed to streamline the creation and fine-tuning of machine learning models by automating synthetic data generation, quality control, and iterative fine-tuning processes. This pipeline reduces the time typically required for model development from weeks to just hours by leveraging large language models (LLMs) for orchestrating generation logic, applying dynamic constraints, and driving intelligent iteration through automated evaluation loops. It includes five interconnected stages, from task definition and configuration generation to dataset customization, automated fine-tuning, and synthetic data cleaning. The system enhances model performance by using synthetic data to train models without relying on real-world data, thereby ensuring compliance with data privacy regulations. Future enhancements will incorporate interactive YAML builders, model jury consensus mechanisms, and batch APIs, positioning this pipeline as a foundational tool for efficient AI model development.