We base our pricing on your user and consumption scale and would be happy to discuss this with you directly. Please feel free to explore the OS version of Active at https://github.com/encord-team/encord-active. Note that some features, such as natural language search using GPU accelerated APIs, are not included in the OS version.
We run usage-based and tiered pricing, but we haven't gotten around to building out a self-serve "sign-up-with-credit-card" product yet. For all the advances in Stripe and automated billing, these things still take some time to implement for a short-staffed engineering team :-)