Zilliz

You store vector embeddings in Zilliz and query them for similar results, which is how many AI search and knowledge base apps find relevant content.

Zilliz is a fully managed vector database for enterprise AI applications, and it runs as a hosted service so you do not operate the infrastructure yourself.

The free plan costs $0 a month and includes 5 GB of storage, enough for about 1M vectors at 768 dimensions, plus 2.5M vCUs per month and up to 5 collections.

That makes sense for learning, prototyping and testing, and Zilliz says moving to a paid plan is easy.

The Serverless plan starts at $0.3 per GB per month, scales automatically and allows up to 100 collections, which fits applications with variable or infrequent traffic.

Dedicated clusters start at $99 a month and add use case optimized CU types, multiple cloud providers and regions, and basic metrics and monitors, with a free trial of up to 30 days.

Organizations with strict compliance needs can ask about BYOC, which deploys in your own cloud infrastructure.