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Weaviate
Open-source vector DB with hybrid search + modular embeddings
OSS vector DB with GraphQL + REST APIs, modular embeddings, hybrid search, multi-tenancy. Self-host (BSD) or managed cloud. Native RAG + Query Agents.
Pricing
| Tier | Price | Notes |
|---|---|---|
| Sandbox (14-day trial) | Free | 14-day free trial. Shared cloud cluster. 250 Query Agent req/month. |
| Self-Hosted (OSS) | Free | BSD-3 licensed. Run free on your infra. |
| Flex | $45/mo | From $45/mo pay-as-you-go. Shared HA cluster. 99.5% uptime. 30k Query Agent reqs/mo. |
| Premium | $400/mo | From $400/mo prepaid. Shared or dedicated. 99.95% uptime. SSO/SAML. Unlimited Query Agent. HIPAA on AWS. |
| Enterprise | Custom | Custom. BYOC / private deployment. |
Limits
| Tier | Metric | Value | Notes |
|---|---|---|---|
| — | apis | REST + GraphQL + gRPC | Available APIs |
| — | backup rate | $0.022–$0.033 per GiB | Backup pricing |
| — | compression | PQ (product quantization), BQ, RQ for ~10x memory reduction | Compression |
| — | hybrid search | Keyword + vector in one query with BM25 + HNSW | Hybrid search |
| — | modules | 60+ vectorizers (OpenAI, Cohere, Google, local, Hugging Face) | Modular vectorizers |
| — | multi tenancy | Native multi-tenant collections with isolated storage | Multi-tenancy |
| — | storage rate | $0.2125–$0.31875 per GiB/month | Storage pricing |
| — | vector dims rate | $0.00975–$0.01668 per 1M dimensions | Vector pricing |
Features
- Backups — S3, GCS, Azure Blob backup destinations.
- BYOC — Run managed Weaviate in your own cloud account.
- Compression (PQ/BQ/RQ) — Reduce vector memory footprint by up to 32x.
- Dynamic Indexing — HNSW + flat + dynamic index selection.
- Generative Search — Search + RAG answers in one API call.
- Hybrid Search — Combine BM25 + dense vector search in one query.
- Modular Vectorizers — 60+ plug-in vectorizers + generative AI modules.
- Multi-Tenancy — Per-tenant isolated vector stores in one cluster.
- Query Agent (AI) — Agentic natural-language query generator.
- RBAC — Role-based access control for collections + tenants.
- Replication — Multi-node async + sync replication.
- Self-Host (OSS) — BSD-3 licensed. Docker + k8s Helm.
- Structured Filters — Metadata filters pre + post vector search.
Developer interfaces
| Slug | Name | Kind | Version |
|---|---|---|---|
| sdk-python | weaviate-client | sdk | 4.x |
| sdk-go | weaviate-go-client | sdk | 5.x |
| graphql | Weaviate GraphQL | graphql | v1 |
| grpc | Weaviate gRPC | other | — |
| sdk-java | weaviate-java-client | sdk | 5.x |
| mcp | Weaviate MCP | mcp | — |
| rest-api | Weaviate REST API | rest | v1 |
| sdk-ts | weaviate-ts-client | sdk | 3.x |
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