Infinity vs Tantivy
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Infinity | Tantivy |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 89 · Excellent | 94 · Excellent |
| Category | Search Engines | Search Engines |
| License | Apache-2.0 | MIT |
| Language | C++ | Rust |
| Setup difficulty | Medium | Hard |
| Min. RAM | 2,048 MB | 128 MB |
| Deployment | docker, binary | source, binary |
| GitHub stars | ★ 4,717 | ★ 16,133 |
| First released | 2024 | 2016 |
| Replaces | Pinecone, Elasticsearch | Elasticsearch |
What are Infinity and Tantivy?
Infinity
Infinity is an open-source AI-native database built for embedding, full-text and hybrid search with very low latency. It is self-hosted and serves as a high-performance search and retrieval backend.
- AI-native database
- Vector and full-text search
- Hybrid retrieval
- Self-hostable
Tantivy
Tantivy is a full-text search engine library inspired by Apache Lucene and written in Rust. It is the foundation for several search engines and can be embedded directly into applications.
- Lucene-like full-text indexing
- Embeddable search library
- Fast and memory efficient
- Powers Quickwit and others
Infinity vs Tantivy: key differences
Infinity is written in C++, while Tantivy is built with Rust. Licensing differs — Apache-2.0 for Infinity versus MIT for Tantivy. Tantivy is the lighter option, starting around 128 MB of RAM against 2,048 MB for Infinity. Tantivy is the more established project (first released 2016), while Infinity arrived in 2024. Tantivy has the considerably larger community, at 16,133 GitHub stars versus 4,717. Infinity lists first-class Docker deployment; Tantivy does not.
Why pick each one
Choose Infinity if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Active community (4.7k GitHub stars)
- Written in C++
Choose Tantivy if…
- Very fast
- Embeddable in apps
Watch out for
- Library, not a turnkey server
Frequently asked questions
Is Infinity or Tantivy better?
Neither is universally better. Tantivy has the larger community, while Infinity is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Infinity and Tantivy free and open-source?
Yes. Infinity is licensed under Apache-2.0 and Tantivy under MIT. Both can be self-hosted at no software cost.
Can I run Infinity and Tantivy with Docker?
Infinity: yes. Tantivy: check the project docs for container support.
Which is lighter on resources, Infinity or Tantivy?
Tantivy has the smaller minimum footprint at 128 MB of RAM, compared to about 2,048 MB for Infinity. Real-world usage depends on library size, user count, and enabled features.