Synthesized is a London- and New York-based enterprise software company that automates the creation of production-realistic test data. Its AI-driven platform generates, masks, and subsets data from sensitive systems so teams can validate software, database migrations, and AI agents before they reach production - all while preserving privacy and meeting regulations such as GDPR. Founded in 2020 by Cambridge machine-learning PhD Nicolai Baldin, the company counts Deutsche Bank and UBS among its customers and raised a $20M Series A in September 2025.
Tonic.ai builds synthetic data infrastructure that lets engineering and AI teams work with realistic, privacy-safe stand-ins for production data. Its platform de-identifies, masks, subsets, and synthesizes both structured databases and unstructured text so developers can test software, train models, and feed LLM and RAG pipelines without exposing sensitive information. Founded in 2018 by a team out of Palantir and Tableau, the San Francisco company serves enterprises across finance, healthcare, and technology and has raised roughly $56M in venture funding.