FAISS alternatives in 2026: 13 tools like FAISS

Closest: Similarity & Indexing

Annoy

Approximate nearest neighbors by Spotify

Curated

0 use thisCompare with FAISS
ScaNN

Scalable nearest neighbors library by Google

Curated

0 use thisCompare with FAISS

More in Vector & Search

Chroma

AI-native open-source embedding database

CuratedLinuxMacWebWindows

0 use thisCompare with FAISS
LanceDB

Open-source multimodal lakehouse and vector database for AI

Curated

0 use thisCompare with FAISS
Milvus

Open-source vector database built for AI

CuratedLinuxMacWindows

0 use thisCompare with FAISS
Pinecone

Managed vector database for ML applications

CuratedWeb

0 use thisCompare with FAISS
Qdrant

Vector similarity search engine

CuratedLinuxMacWebWindows

0 use thisCompare with FAISS
turbopuffer

Vector and full-text search built on object storage

CuratedWeb

0 use thisCompare with FAISS
Weaviate

Open-source vector database with ML integrations

Curated

0 use thisCompare with FAISS
Elasticsearch

Distributed search and analytics engine

CuratedLinuxMacWebWindows

0 use thisCompare with FAISS
OpenSearch

Open-source search and analytics suite for vector and keyword search

CuratedLinuxWindows

0 use thisCompare with FAISS
Vespa

Big data serving engine with ML integration

Curated

0 use thisCompare with FAISS
P

pgvector

Vector similarity search for PostgreSQL

CuratedLinuxMacWindows

0 use thisCompare with FAISS

Questions

What are the closest alternatives to FAISS?

Annoy and ScaNN sit on the same sub-line as FAISS (Similarity & Indexing) on AI Landscape.

How are these alternatives chosen?

They are the other products on the Vector & Search stop of the map: curated products first, the ones on FAISS's sub-line before the rest, then by name until members have marked enough of them.