Isidor

Isidor is an applied research and product company that develops secure, vertically-integrated data pipelines for enterprise AI. Its website says it transforms raw, unstructured proprietary data into reinforcement-learning-ready curricula for model training. Listed offerings include evaluation, verifiers, reasoning trace data, foundation model post-training, and security and privacy guardrails.

The website says the company works directly with frontier AI labs and enterprises. It does not describe its pricing or revenue model.

The website lists offices in San Francisco and London, and the registry records the company in GB with San Francisco as its HQ city. It states it is backed by angels and advisors, but names no investors, funding amounts or founding year. Open roles listed on the careers page are Founding Engineer, Forward Deployed Engineer, Intern and an open application, all based in SF and London.

Product: Data pipelines for enterprise AI covering evaluation, verifiers, reasoning trace data, foundation model post-training, and security and privacy guardrails.