Best Vector Databases · FREE
Best free Vector Databases (2026)
7 vector databases that offer a genuine free plan, ranked by entry price. Every figure links to the vendor's own page and the date we captured it.
Key takeaways
- Cheapest: Chroma at $0/mo.
- Qualifying: Chroma, MongoDB Atlas Vector Search, Pinecone, Qdrant Cloud, Redis Cloud, Supabase (pgvector), Weaviate.
- Data current through: 2026-06-14.
Comparison
| # | Vector Database | Entry price | Free | HIPAA | SOC 2 | Best for | Source |
|---|---|---|---|---|---|---|---|
| 1 | Chroma | $0/mo | Yes | No | Yes | Developer-first teams building RAG prototypes quickly with open-source tooling | trychroma.com |
| 2 | MongoDB Atlas Vector Search | $0/mo | Yes | Yes | Yes | Teams already on MongoDB Atlas wanting vector search without a separate DB | mongodb.com |
| 3 | Pinecone | $0/mo | Yes | Yes | Yes | Production RAG applications needing fully managed serverless scale | pinecone.io |
| 4 | Qdrant Cloud | $0/mo | Yes | Yes | Yes | High-performance production workloads requiring low-latency ANN search | qdrant.tech |
| 5 | Redis Cloud | $0/mo | Yes | Yes | Yes | Real-time AI applications requiring sub-millisecond vector query latency | redis.io |
| 6 | Supabase (pgvector) | $0/mo | Yes | Yes | Yes | Full-stack apps needing vector search co-located with Postgres relational data | supabase.com |
| 7 | Weaviate | $0/mo | Yes | Yes | Yes | Multi-tenant SaaS applications needing per-customer data isolation | weaviate.io |