Substrate is an expressive graph SDK, a pristine library of nodes distilling the latest AI models and techniques, and state-of-the-art infrastructure for serving multi-inference workloads. Companies like Substack, Maven, and others use Substrate to quickly protoype and deploy workflows combining dozens of inference modules.

We’re obsessed with craft & beauty in developer tools, and we’re on a mission to bring a Stripe-quality API experience to the world of AI engineering. We do many of the things which under the hood make Stripe a world-class developer experience: versioning machinery to ensure extensive backwards-compatibility… a code generation system that produces SDKs, API documentation, and runnable demos.