Code & Development (3)

All 3 vector databases and RAG infrastructure in the Flocci catalog, 3 of them free or freemium. Pricing tier and real capabilities on every entry — no ads, no sponsored placement.

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Qdrant

Vector Databases & RAG Infra
freemium
  • Open-source Rust-based vector database, self-hostable for free with no scale limit
  • Managed free tier cluster (0.5 vCPU/1GB RAM/4GB disk) for prototyping RAG apps with no card required for OSS use
  • Hybrid Cloud option to run managed clusters on your own infrastructure for compliance-sensitive RAG
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Weaviate

Vector Databases & RAG Infra
freemium
  • Free managed cloud plan (100k objects, 1GB memory, 10GB disk) to explore without self-hosting
  • Open-source core project can be self-hosted for free indefinitely, same engine as the managed cloud
  • Built-in hybrid (vector + keyword) search and native embedding/query-agent integrations
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Chroma

Vector Databases & RAG Infra
freemium
  • Fully open-source embedded/self-hosted vector store, the default choice bundled into countless RAG tutorials and frameworks
  • Chroma Cloud managed tier starts with free usage credits, no subscription
  • Simple Python/JS-native API designed to be the easiest on-ramp to RAG for developers
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Vector Databases & RAG Infra — straight answers

What are the best free vector databases and RAG infrastructure?

Flocci AI Tools lists 3 vector databases and RAG infrastructure, ordered free tiers first: Chroma, Qdrant and Weaviate. All of them are free or have a free tier. Every entry states what it uniquely does, not a score.

Are there completely free vector databases and RAG infrastructure?

None in this sub-category are fully free, but 3 are freemium with a usable free tier. The Completely Free AI Tools collection lists the 115 entries site-wide that carry no paid plan at all.

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What should I look for in vector databases and RAG infrastructure?

Start with what you need to do: store embeddings and retrieve them for a RAG app. Then check the pricing tier, because "free" here means no paid plan at all while "freemium" means a free tier under paid plans. Every tool on this page lists both.

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Looking for a ranked shortlist instead? See the best free vector databases and RAG infrastructure.