Free-offer comparison
Free Vector Databases
Free vector storage is only part of a database offer. Read and write limits, region choices, and backup rules matter once an app has traffic.
Guide updated Sep 20, 2026 · Offer review and source dates appear below · Methodology
Free-offer ranking
Each row describes the provider’s recorded free offer, which may cover a different product from the category shown here. The table keeps published units separate. “Not confirmed” means we lack evidence for that detail; it does not mean the provider requires a card.
Scroll horizontally to compare every column.
| Rank | Provider | Free-access score | Recorded free offer | Access pattern | Billing/card | Offer note | Full review | Official source |
|---|---|---|---|---|---|---|---|---|
| #1 | Weaviate | 70/100 | 1K requests/mo | Recurring allowance | Not confirmed | 1,000 Query Agent request units per month; Ask can consume four units per query. | Jul 17, 2026 | View pricingAccessed Sep 13, 2026 |
| #2 | Milvus (Zilliz Cloud) | 65/100 | 5 GB | Ongoing free access | Not confirmed | Free tier on serverless cluster; paid plans start at $0.30/GB or $99/mo dedicated | Jul 17, 2026 | View pricingAccessed Sep 20, 2026 |
| #3 | Pinecone | 60/100 | $300 credit for 21 days | One-time balance | Not confirmed | Starter is an ongoing $0 plan with its own resource limits. | Jul 17, 2026 | View pricingAccessed Sep 13, 2026 |
| #4 | Qdrant | 30/100 | Free tier | Introductory offer | Not confirmed | Idle free clusters are suspended after one week and deleted after four weeks unless reactivated. | Jul 17, 2026 | View documentationAccessed Sep 13, 2026 |
Why these providers appear in this order
We score each provider’s recorded free offer: up to 40 points for recurring or durable access, 20 for a confirmed no-card signup, 15 for a stated allowance, 15 for distinct evidence links, and 10 for documented terms. Missing details earn no points. Ties favor longer-lasting access, then more detailed records, then provider name. The score does not measure product quality or whether the free offer covers this category. Read the full method before treating it as a recommendation.
Which providers are included?
We include active directory records tagged for vector databases. A tag describes a provider’s capability; its recorded free offer may cover only part of that provider’s catalog. Check the model or endpoint in the provider’s terms before building on the allowance.
See the full vector databases category, including records excluded from this guide.