Qdrant
A mature, well-documented vector database that is easy to start with locally and scales to managed or private deployments. It is a strong pick when you want open-source control and fine-grained metadata filtering. Paid cost is usage-based and not quoted as a simple number, so estimate it with the vendor's calculator before committing.
Pros
- Apache 2.0 engine with a free forever cloud tier
- Native hybrid search with dense and sparse vectors
- Deployable on your own servers, in Qdrant Cloud, or in your own cloud
- SOC 2 and HIPAA compliance listed on the homepage
Cons
- Standard and Premium cloud pricing is usage-based with no quoted starting price
- The free tier is a single small node suited to prototypes only
- Self-hosting means you handle scaling, backups and upgrades