bleve vs Weaviate
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
Weaviate
Open-source vector database for semantic and AI search
| Feature | bleve | Weaviate |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 93 · Excellent | 95 · Excellent |
| Category | Search Engines | Search Engines |
| License | Apache-2.0 | BSD-3-Clause |
| Language | Go | Go |
| Setup difficulty | Medium | Medium |
| Min. RAM | 128 MB | 2,048 MB |
| Deployment | source, binary | docker, kubernetes, helm |
| GitHub stars | ★ 11,228 | ★ 16,841 |
| First released | 2014 | 2019 |
| Replaces | Elasticsearch, Algolia | Pinecone, Algolia |
What are bleve and Weaviate?
bleve
An embeddable modern full-text search and indexing library that lets developers add search to applications without running a separate server. It supports analyzers, faceting, and scoring out of the box.
- Embeddable index
- Text analyzers
- Faceted search
- Pluggable storage
Weaviate
Weaviate is an open-source vector database that stores objects and their vector embeddings for semantic search. It enables AI-powered similarity search, retrieval-augmented generation and hybrid queries.
- Vector and hybrid search
- Built-in vectorization modules
- GraphQL and REST APIs
- Horizontal scaling
bleve vs Weaviate: key differences
Both projects are written in Go. Licensing differs — Apache-2.0 for bleve versus BSD-3-Clause for Weaviate. Bleve is the lighter option, starting around 128 MB of RAM against 2,048 MB for Weaviate. Bleve is the more established project (first released 2014), while Weaviate arrived in 2019. Weaviate lists first-class Docker deployment; bleve does not.
Why pick each one
Choose bleve if…
- No separate server
- Pure Go integration
Watch out for
- Library not turnkey app
- Manual scaling
Choose Weaviate if…
- Great for AI semantic search
- Easy to start
Watch out for
- Memory hungry with large datasets
Frequently asked questions
Is bleve or Weaviate better?
Neither is universally better. Weaviate has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are bleve and Weaviate free and open-source?
Yes. bleve is licensed under Apache-2.0 and Weaviate under BSD-3-Clause. Both can be self-hosted at no software cost.
Can I run bleve and Weaviate with Docker?
bleve: check the project docs for container support. Weaviate: yes.
Which is lighter on resources, bleve or Weaviate?
bleve has the smaller minimum footprint at 128 MB of RAM, compared to about 2,048 MB for Weaviate. Real-world usage depends on library size, user count, and enabled features.