Weaviate by semi-technologies
Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database.
About Weaviate
From the project's README at github.com/semi-technologies/weaviate. Lightly cleaned for readability; for the full source see the upstream repo.
[](https://github.com/weaviate/weaviate) [](https://pkg.go.dev/github.com/weaviate/weaviate) [](https://github.com/weaviate/weaviate/actions/workflows/.github/workflows/pullrequests.yaml) [](https://goreportcard.com/report/github.com/weaviate/weaviate) [](https://codecov.io/gh/weaviate/weaviate)
Weaviate** is an open-source, cloud-native vector database that stores both objects and vectors, enabling semantic search at scale. It combines vector similarity search with keyword filtering, retrieval-augmented generation (RAG), and reranking in a single query interface. Common use cases include RAG systems, semantic and image search, recommendation engines, chatbots, and content classification.
Weaviate supports two approaches to store vectors: automatic vectorization at import using integrated models (OpenAI, Cohere, HuggingFace, and others) or direct i
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 16k | github.com/semi-technologies/weaviate |
| GitHub forks | 1.3k | github.com/semi-technologies/weaviate |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 10.1 years | since Mar 2016 |
| Last commit | 2 days ago | May 5, 2026 |
| Releases shipped | 527 | last: 3 days ago |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
What people say on Hacker News
Ready to self-host Weaviate?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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