Faiss - Tool thumbnail
  • Python Libraries
  • Open Source
  • Vector Search, Similarity Search, Clustering, Machine Learning, GPU Acceleration, Dense Vectors
  • Added: Oct 04, 2025
Visit Faiss

You will be redirected to the official website.

Faiss

Faiss is an efficient similarity search and clustering library for dense vectors, scaling to billions of items.

Faiss is a powerful library designed for efficient similarity search and clustering of dense vectors. It handles datasets of any size, even those exceeding available RAM, by employing various indexing structures and compressed vector representations. This enables rapid retrieval of similar items based on L2 distances or dot products.

This tool offers significant benefits for large-scale data analysis, including faster search times and reduced memory footprints. It supports both CPU and GPU implementations, with the latter providing substantial speedups. Faiss is ideal for researchers and developers working with massive vector datasets, such as in recommendation systems, image retrieval, and natural language processing, making it a key component for building intelligent applications.
  • Perform efficient similarity search on dense vectors.
  • Cluster large datasets of vectors, even those not fitting in RAM.
  • Utilize GPU acceleration for faster search and clustering operations.
  • Support for L2 distances, dot products, and cosine similarity.
  • Implement various indexing structures for trade-offs in speed, quality, and memory.
  • Annoy
  • NMSLIB
  • ScaNN