Weaviate Pricing: Self-Hosted vs Cloud Costs

Weaviate is one of the few vector databases you can genuinely self-host for free. Their managed cloud option, Weaviate Cloud, adds convenience but also cost. Here's what each option runs you and when managed makes more sense than self-hosted.

Open Source (Self-Hosted)

$0 Free forever

✓ Full-featured vector database
✓ All search types (vector, keyword, hybrid)
✓ Multi-tenancy support
✓ Run on your own infrastructure
✓ Community support via forums and Slack

Serverless Cloud (Free Tier)

$0 Free sandbox

✓ 2 sandbox clusters
✓ 14-day expiration per sandbox
✓ Good for prototyping and evaluation
✓ No credit card required
✓ Limited to small datasets

Serverless Cloud (Paid)

Usage-based pay as you go

✓ Stored objects: $0.035 per 1M dimension-hours
✓ Queries: $0.175 per 1M dimensions queried
✓ No cluster management needed
✓ Auto-scaling
✓ Standard support included

Enterprise Cloud

Custom annual contract

✓ Dedicated infrastructure
✓ 99.9%+ SLA
✓ Customer-managed encryption keys
✓ Advanced RBAC
✓ Bring your own cloud (AWS, GCP, Azure)
✓ Dedicated support engineer

Hidden Costs & Gotchas

⚠ Self-hosting is free in license terms, but you're paying for the infrastructure. A small production setup on AWS runs $200-500/month in EC2 and EBS costs.
⚠ Serverless pricing is measured in dimension-hours, which is confusing. A collection with 1M objects of 1536 dimensions costs roughly $50-80/month just for storage.
⚠ Query costs scale with the number of dimensions queried, not the number of results. High-dimensional embeddings (1536) cost 4x more per query than low-dimensional ones (384).
⚠ The free sandbox expires after 14 days. If you forget to migrate your data, it's gone. This is for evaluation only, not persistent development.

Which Plan Do You Need?

Developer building a prototype

Start with the free sandbox to evaluate Weaviate's features. When you're ready for persistence, either self-host with Docker or move to Serverless Cloud.

Small production workload

Serverless Cloud is cheapest for under 1M vectors. Expect $30-100/month depending on query volume and embedding dimensions. No infrastructure to manage.

Team with DevOps capability

Self-host with Kubernetes or Docker Compose. You'll spend $200-500/month on infrastructure but save on the managed service markup and have full control over performance tuning.

Enterprise with compliance requirements

Enterprise Cloud gives you dedicated infrastructure, SLAs, and bring-your-own-cloud. Negotiate pricing based on your volume. Compare against self-hosting total cost including ops time.

The Bottom Line

Weaviate's self-hosted option is a real advantage if you have the ops capability. It's fully featured and free to use. The managed Serverless Cloud is reasonably priced for small workloads but the dimension-based pricing model makes costs hard to predict. At scale, compare managed costs against self-hosting on your own infrastructure. The breakeven is usually around 5M vectors.

Disclosure: Pricing information is sourced from official websites and may change. We update this page regularly but always verify current pricing on the vendor's site before purchasing.

Related Resources

Pinecone vs Weaviate comparison → Best Pinecone Alternatives → Pinecone pricing → Vector Database glossary → RAG architecture guide →

Frequently Asked Questions

Is Weaviate free?

Weaviate is open source and free to self-host with no restrictions. The managed cloud service has a free sandbox tier (14-day expiration) and paid serverless plans starting with usage-based pricing. Self-hosting is genuinely free if you have your own infrastructure.

How much does Weaviate Cloud cost?

Serverless Cloud charges per dimension-hour for storage and per dimensions queried. A typical small workload (500K vectors, 1536 dimensions, moderate query volume) costs $30-80/month. Costs increase with vector count, dimensions, and query frequency.

Should I self-host Weaviate or use the cloud?

Self-host if you have DevOps capability and want full control over costs and performance. Use the cloud if you want zero infrastructure management and your workload is small-to-medium. The breakeven point is roughly 5M vectors, where self-hosting becomes cheaper.

How does Weaviate compare to Pinecone?

Weaviate offers self-hosting (Pinecone doesn't), hybrid search (vector + keyword), and more flexible data modeling. Pinecone has simpler serverless pricing and less operational overhead. Weaviate is cheaper at scale due to the self-host option. Pinecone is easier to start with.