Comparison

Milvus 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.

Milvus full profile →Upstash full profile →

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.

Milvus57

★Upstash73

Attribute comparison across 2 tools
Attribute	Milvus	UpstashLeader
vioscaleAI score	57 / 100medium · 57%	73 / 100medium · 72%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	freemium
Price levelpricing.price_level	free	low
Starting pricepricing.starting_price	-	$5
Transparentpricing.transparent	✗	✓
Integrations
Countintegrations.count	2	6
Security
Disclosure policysecurity.disclosure_policy	-	✓
Gdprsecurity.gdpr	-	✓
Hipaasecurity.hipaa	-	✓
Scorecardsecurity.scorecard	4.4	-
Soc2security.soc2	-	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fmilvus-io%2Fmilvus%2Fpkg&per_page=100 · Last 12m: 0	-
Reliability
Sla pctreliability.sla_pct	-	99.99
Status pagereliability.status_page	-	✓
Adoption
Dependent reposadoption.dependent_repos	7	-
Github starsadoption.github_stars	46,375	-
Activity
Commits last 30dactivity.commits_last_30d	100	-
Release
Cadence daysrelease.cadence_days	7	-
Historyrelease.history	20 items	-
License
Spdxlicense.spdx	Apache-2.0	-
Language
Primarylanguage.primary	Go	-
Market
Availabilitymarket.availability	-	Available worldwide · Popular in US
Content
Faqcontent.faq	6 items	7 items

Score

vioscaleAI score

Milvus57 / 100medium · 57%

Upstash73 / 100medium · 72%

Pricing

Free tier

Milvus✓

Upstash✓

Model

Milvusopen_source

Upstashfreemium

Price level

Milvusfree

Upstashlow

Starting price

Milvus–

Upstash$5

Transparent

Milvus✗

Upstash✓

Integrations

Count

Milvus2

Upstash6

Security

Disclosure policy

Milvus–

Upstash✓

Gdpr

Milvus–

Upstash✓

Hipaa

Milvus–

Upstash✓

Scorecard

Milvus4.4

Upstash–

Soc2

Milvus–

Upstash✓

Vulnerabilities

MilvusCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fmilvus-io%2Fmilvus%2Fpkg&per_page=100 · Last 12m: 0

Upstash–

Reliability

Sla pct

Milvus–

Upstash99.99

Status page

Milvus–

Upstash✓

Adoption

Dependent repos

Milvus7

Upstash–

Github stars

Milvus46,375

Upstash–

Activity

Commits last 30d

Milvus100

Upstash–

Release

Cadence days

Milvus7

Upstash–

History

Milvus20 items

Upstash–

License

Spdx

MilvusApache-2.0

Upstash–

Language

Primary

MilvusGo

Upstash–

Market

Availability

Milvus–

UpstashAvailable worldwide · Popular in US

Content

Faq

Milvus6 items

Upstash7 items

Capabilities

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

Capability comparison for Vector Databases
Capability	Milvus	Upstash
Deployment
Deployment	Self-hosted	Managed
Serverless / consumption pricing	✓	✓
Index
ANN index (HNSW / IVF / DiskANN / ScaNN / flat)	HNSW, IVF, FLAT, SCANN, DiskANN, GPU_CAGRA	HNSW
Distance metrics (cosine / dot / Euclidean)	cosine, Euclidean, dot product	cosine
Query
Metadata filtering	Pre-filter	Pre-filter
Hybrid search (dense + sparse fusion)	✓	✓
Built-in BM25 / lexical	✓	✓
Storage
Quantization	Product	-
On-disk vs in-memory	Disk-backed	persistent
Scale
Multi-tenancy (namespaces / collections / tenants)	✓	✓
Horizontal scale	Sharded / distributed	Sharded / distributed
Consistency
Consistency	Eventual	Strong
Licensing
Licence class	Permissive OSS	Proprietary
Classification
Purpose-built vs feature-of-parent	Dedicated DBMS	Dedicated DBMS

Deployment

MilvusSelf-hosted

UpstashManaged

Serverless / consumption pricing

Milvus✓

Upstash✓

Index

ANN index (HNSW / IVF / DiskANN / ScaNN / flat)

MilvusHNSW, IVF, FLAT, SCANN, DiskANN, GPU_CAGRA

UpstashHNSW

Distance metrics (cosine / dot / Euclidean)

Milvuscosine, Euclidean, dot product

Upstashcosine

Query

Metadata filtering

MilvusPre-filter

UpstashPre-filter

Hybrid search (dense + sparse fusion)

Milvus✓

Upstash✓

Built-in BM25 / lexical

Milvus✓

Upstash✓

Storage

Quantization

MilvusProduct

Upstash-

On-disk vs in-memory

MilvusDisk-backed

Upstashpersistent

Scale

Multi-tenancy (namespaces / collections / tenants)

Milvus✓

Upstash✓

Horizontal scale

MilvusSharded / distributed

UpstashSharded / distributed

Consistency

MilvusEventual

UpstashStrong

Licensing

Licence class

MilvusPermissive OSS

UpstashProprietary

Classification

Purpose-built vs feature-of-parent

MilvusDedicated DBMS

UpstashDedicated DBMS

What each one is

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

Milvus

A high-performance, distributed vector database that enables fast similarity search across billions of high-dimensional vectors, supporting real-time updates, flexible metadata filtering, and hybrid search capabilities for AI and machine learning applications.

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.

Milvus

Open sourceFree tier

as of 2026-10-13verify ↗

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 2026-10-06verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	Milvus	Upstash
WebPlatforms	✓	✓
LinuxPlatforms	✓	✗
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✗

Platforms

Web

Milvus✓

Upstash✓

Linux

Milvus✓

Upstash✗

CLI

Milvus✓

Upstash✓

Deployment

Cloud / SaaS

Milvus✓

Upstash✓

Self-hosted

Milvus✓

Upstash✗

Integrations

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

Milvus

8 total

OpenAI
Sentence Transformers
BGE-M3
SPLADE
Jina AI
BM25
PyMilvus
Jina

Independently observed

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?

Milvus 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.