Vellum

Vellum is a freemium platform for building personal AI assistants that learn your preferences and operate 24/7. It offers a free tier with 1 vCPU, 2 GiB RAM, and 4 GiB storage, with paid upgrades starting at $35/month for more compute and storage. Core capabilities include a sophisticated memory system with eight types (episodic, semantic, procedural, and more), self-improving skills that adapt to your workflow, and easy setup in under 30 seconds. The assistant can be hosted on Vellum's cloud or self-hosted using open-source code. Pricing uses a pay-as-you-go credit model for LLM inference and other services. It suits developers and solopreneurs who need a customizable, always-on AI assistant for tasks like scheduling, coding help, and personal organization.