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FAISS Pricing

open sourceopen source · MITlast verified August 26, 2026official site ↗
PlanPriceNotes
Open Source (MIT)official source ↗$0checked 2026-08-26Complete open-source vector similarity search and clustering library for CPU and GPU with no commercial license fees or usage restrictions.

structured from cited official pricing sources: “FAISS (Facebook AI Similarity Search) is 100% free and open-source software released under the MIT license by Meta Research, with no commercial fees or vendor lock-in.”

Self-hosting cost

FAISS is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

Free & cheaper Vector Databases

same category, free plan or open-source license

UpstashFreemium serverless data platform (Redis, Kafka, Vector, QStash). Free tier includes daily command/request quotas (10k commands/day for Redis/Kafka/Vector, 500 messages/day for QStash at $0/mo). Pay-as-you-go charges per request ($0.20-$0.40 per 100k requests) and storage ($0.25/GB/mo) with scale-to-zero idle compute. Pro fixed plans start at $280/mo with dedicated throughput and 99.99% SLA, and Enterprise plans provide dedicated VPC peering and custom compliance.TurboVecopen sourceFree and open source under the MIT License. Distributed as a Rust crate and Python package with zero software licensing fees.Neonopen sourceNeon provides a serverless PostgreSQL database with scale-to-zero capabilities. The Free tier includes 100 Compute Unit (CU) hours and 0.5 GB storage per month across up to 100 projects. Paid usage is consumption-based with no minimum monthly platform fee: Launch bills at $0.106/CU-hour and Scale at $0.222/CU-hour with $0.35/GB-month storage.SPTAGopen sourceFree and open source under the MIT License. Users provide their own hardware and compute infrastructure for distributed serving and index compilation.
FAISS overview →alternatives →review: 81/100 →

FAQ

How much does FAISS cost?

FAISS (Facebook AI Similarity Search) is 100% free and open-source software released under the MIT license by Meta Research, with no commercial fees or vendor lock-in.

Does FAISS have a free plan?

Yes — FAISS is open source and free to use.

Can you self-host FAISS for free?

FAISS is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

What are free or cheaper FAISS alternatives?

Upstash, TurboVec, Neon are in the same category with a free plan or open-source license.

pricing is editorial catalog data (last verified August 26, 2026) — vendors change plans; confirm on the official site before you buy. Reuse this data under CC-BY 4.0 via /data.