Chalk

Chalk is an AI and machine learning data platform that provides real-time feature engineering, low-latency feature serving, and compute infrastructure in developers' own cloud environments. Founded in 2022 by Marc Freed-Finnegan, Elliot Marx, and Andrew Moreland, Chalk enables data engineering and ML teams to define feature pipelines in declarative Python, maintaining point-in-time correctness for real-time model inference, fraud detection, risk scoring, and AI agents.