# USearch

7 Hacker News commenters recommended USearch and 0 criticized it, November 2025 to November 2026. It was recommended in 4 of 13 months.

**Verdict:** Free vector search library that people find fast at large scale and happy working with vectors on disk.

## Why people recommend it

- Fast vector search (3 comments): "It's plenty fast and is happy working with vectors on disk" ([source](https://news.ycombinator.com/item?id=47284995)) "usearch is amazingly fast, 44m embeddings in < 100ms" ([source](https://news.ycombinator.com/item?id=47019797)) "100K QPS was easily achievable in 2023" ([source](https://news.ycombinator.com/item?id=47020007))

## Alternatives hackers recommend

- [Qdrant](https://hackerapproved.com/p/qdrant.md): 22 recommend
- [Chroma](https://hackerapproved.com/p/chroma.md): 17 recommend
- [sqlite-vec](https://hackerapproved.com/p/sqlite-vec.md): 17 recommend
- [LanceDB](https://hackerapproved.com/p/lancedb.md): 12 recommend
- [FAISS](https://hackerapproved.com/p/faiss.md): 9 recommend

## Cite as

Hacker Approved, "USearch", https://hackerapproved.com/p/usearch/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).