vioscaleAI
Comparison

Faiss vs Upstash

On the evidence we track, Upstash leads this comparison with a composite score of 73/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Faiss full profile →Upstash full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Faiss57
★Upstash73
Score
vioscaleAI score
Faiss57 / 100low · 35%
Upstash73 / 100medium · 72%
Pricing
Free tier
Faiss–
Upstash✓
Model
Faisscommercial
Upstashfreemium
Price level
Faissfree
Upstashlow
Starting price
Faiss–
Upstash$5
Transparent
Faiss–
Upstash✓
Integrations
Count
Faiss–
Upstash6
Security
Disclosure policy
Faiss–
Upstash✓
Gdpr
Faiss–
Upstash✓
Hipaa
Faiss–
Upstash✓
Scorecard
Faiss6.2
Upstash–
Soc2
Faiss–
Upstash✓
Vulnerabilities
Reliability
Sla pct
Faiss–
Upstash99.99
Status page
Faiss✓
Upstash✓
Adoption
Dependent repos
Faiss5,592
Upstash–
Github stars
Faiss41,146
Upstash–
Activity
Commits last 30d
Faiss66
Upstash–
Release
Cadence days
Faiss83
Upstash–
History
Faiss20 items
Upstash–
License
Spdx
FaissMIT
Upstash–
Language
Primary
FaissC++
Upstash–
Market
Availability
Content
Faq
Faiss5 items
Upstash7 items

Capabilities

Feature-by-feature on the axes that matter for vector databases. “-” means undocumented, not absent.

Deployment
Deployment
FaissSelf-hosted
UpstashManaged
Serverless / consumption pricing
Faiss✗
Upstash✓
Index
ANN index (HNSW / IVF / DiskANN / ScaNN / flat)
FaissHNSW, IVF, PQ, multi-index, NSG
UpstashHNSW
Distance metrics (cosine / dot / Euclidean)
FaissEuclidean (L2), inner product, L1, Linf
Upstashcosine
Query
Metadata filtering
Faiss-
UpstashPre-filter
Hybrid search (dense + sparse fusion)
Faiss-
Upstash✓
Built-in BM25 / lexical
Faiss-
Upstash✓
Storage
Quantization
FaissProduct
Upstash-
On-disk vs in-memory
FaissDisk-backed
Upstashpersistent
Scale
Multi-tenancy (namespaces / collections / tenants)
Faiss-
Upstash✓
Horizontal scale
FaissSingle-node
UpstashSharded / distributed
Consistency
Consistency
Faiss-
UpstashStrong
Licensing
Licence class
FaissPermissive OSS
UpstashProprietary
Classification
Purpose-built vs feature-of-parent
FaissExtension
UpstashDedicated DBMS

What each one is

The product in its own terms, so the numbers below have context.

Faiss

Faiss is a library for efficient similarity search and clustering of dense vectors. It contains algorithms that search in sets of vectors of any size, up to ones that possibly do not fit in RAM.

Independently observed

Upstash

Leader

A cloud platform offering serverless Redis, vector databases, message queues, and workflow orchestration designed for developers building serverless applications, with usage-based and fixed-rate pricing options.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Faiss

Open source
as of verify ↗

Upstash

Leader
from $5/moHybridFree tier

Free tier (30 MB), Essentials from $5/month, Pro from $200/month

  • FreeFree
    • No replication
    • Single database
    • Limited throughput
  • Essentials$5/month (250 MB) to $216/month (12 GB)
    • Predefined database sizes (250 MB to 12 GB)
    • Bandwidth and throughput limits per tier
    • Optional high availability
    • Flex tier with reduced throughput
  • Pro$200/month minimum + $0.014/hour usage-based billing
    • Unlimited memory
    • Dedicated VPC infrastructure
    • Multiple databases per subscription
    • Active-Active multi-region writes
    • Auto-tiering
    • +1 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Faiss✗
Upstash✓
macOS
Faiss✓
Upstash✗
Windows
Faiss✓
Upstash✗
Linux
Faiss✓
Upstash✗
CLI
Faiss✗
Upstash✓
Deployment
Cloud / SaaS
Faiss✗
Upstash✓
Self-hosted
Faiss✓
Upstash✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Faiss

Not documented yet.

Upstash

Leader
13 total
  • Cloudflare Workers
  • Auth0
  • MongoDB
  • MySQL
  • PostgreSQL
  • Debezium
  • JDBC
  • FluentBit
  • Drizzle
  • Vercel AI SDK
  • Redis protocol clients
  • Vercel
  • Aiven
Independently observed
Still deciding?

Faiss or Upstash: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.