Chalk is the platform for production AI: context, runtime, and learning for your agents and models. Chalk gives you the infrastructure to build, run, and improve production AI in your own cloud: Context: Serve fresh, real-time data to your agents and models at inference time, in milliseconds. Runtime: Deploy and run those agents and models securely and at scale. Learning: Train and evaluate on point-in-time correct history, so your agents and models improve from exactly what production saw. Chalk delivers these through the Context Engine and the Chalk Compute runtime, both built on the same philosophy: define what you need in Python, and run it on infrastructure you control.