vioscaleAI
Comparison

Amazon Neptune vs Virtuoso

On the evidence we track, Amazon Neptune leads this comparison with a composite score of 58/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Amazon Neptune full profile →Virtuoso full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
★Amazon Neptune58
Virtuoso37
Score
vioscaleAI score
Amazon Neptune58 / 100medium · 73%
Virtuoso37 / 100high · 77%
Pricing
Free tier
Amazon Neptune✓
Virtuoso✓
Model
Amazon Neptunefreemium
Virtuosofreemium
Price level
Amazon Neptunelow
Virtuosohigh
Starting price
Amazon Neptune$0.15
Virtuoso$99.99
Transparent
Amazon Neptune✗
Virtuoso✓
Integrations
Count
Amazon Neptune4
Virtuoso6
Security
Certifications
Amazon NeptuneSOC 2, FedRAMP, HIPAA
Virtuoso–
Disclosure policy
Amazon Neptune✓
Virtuoso–
Fedramp
Amazon Neptune✓
Virtuoso–
Gdpr
Amazon Neptune✓
Virtuoso–
Hipaa
Amazon Neptune✓
Virtuoso–
Pci
Amazon Neptune✓
Virtuoso–
Scorecard
Amazon Neptune–
Virtuoso2.7
Soc2
Amazon Neptune✓
Virtuoso–
Trust center
Amazon Neptunehttps://aws.amazon.com/security/
Virtuoso–
Vulnerabilities
Reliability
Status page
Amazon Neptune✓
Virtuoso✓
Adoption
Dependent repos
Amazon Neptune–
Virtuoso1
Github stars
Amazon Neptune–
Virtuoso975
Package downloads weekly
Amazon Neptune–
Virtuoso22
Activity
Commits last 30d
Amazon Neptune–
Virtuoso9
Release
Cadence days
Amazon Neptune–
Virtuoso143
History
Amazon Neptune–
Virtuoso19 items
License
Spdx
Amazon Neptune–
VirtuosoBSD
Language
Primary
Amazon Neptune–
VirtuosoC
Market
Availability
Content
Faq
Amazon Neptune5 items
Virtuoso7 items

Capabilities

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

Model
Graph model
Amazon NeptuneMulti-model
VirtuosoRDF / triple
Query language(s)
Amazon NeptuneGremlin, openCypher, SPARQL
VirtuosoSPARQL
Transactions
ACID transactions
Amazon NeptuneFull
Virtuoso-
Consistency model
Amazon Neptune-
Virtuoso-
Architecture
Storage
Amazon Neptune-
Virtuoso-
Distributed / scale
Amazon NeptuneSharded
Virtuoso-
Replication / HA
Amazon Neptune✓
Virtuoso✓
OLTP vs OLAP
Amazon NeptuneBoth
VirtuosoBoth
Deployment
Deployment
Amazon NeptuneManaged
VirtuosoSelf-hosted
Search
Full-text search
Amazon NeptuneNone
Virtuoso-
Built-in vector search
Amazon Neptune✓
Virtuoso-
Licensing
Licence class
Amazon NeptuneProprietary
VirtuosoSource-available
Portability
openCypher / TinkerPop standard
Amazon Neptune✓
Virtuoso✓

What each one is

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

Amazon Neptune

Leader

A fully managed, serverless graph database that automatically scales for handling billions of relationships. Supports standard query languages and provides ACID transactions, replication, and encryption to enhance AI applications with better context.

Independently observed

Virtuoso

A database server supporting both conventional relational data via SQL and semantic graphs via SPARQL and GraphQL. Designed to integrate diverse data sources into a unified system that enables knowledge graph creation, reasoning, and enterprise-wide data discovery.

Independently observed

Pricing

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

Amazon Neptune

Leader
from $0.15/vCPU-HourUsage-basedFree tier30-day trial

Usage-based pricing. Free tier for 30 days. Options: on-demand hourly, serverless per capacity unit, or annual savings plan.

  • On-demand$0.15 per vCPU-Hour
  • Serverless-
  • Database Savings Plan-
as of verify ↗

Virtuoso

from $99.99/yrHybridFree tier

From $99.99/year for workstation licenses. Free open-source edition available under GPL. Perpetual enterprise licenses available on request.

  • Personal$99.99/year
    • 2 Concurrent Sessions
    • CPU Core Affinity
    • Linux, Windows, macOS
    • Workstation
  • Developer$199/year
    • 5 Concurrent Sessions
    • Application Development License
  • Project$499/year
    • 16 Concurrent Sessions
    • Unlimited CPU Cores
    • Server-Grade Operating Systems
    • Enterprise Support
as of verify ↗

Platform & deployment

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

Platforms
Web
Amazon Neptune✓
Virtuoso✓
macOS
Amazon Neptune✗
Virtuoso✓
Windows
Amazon Neptune✗
Virtuoso✓
Linux
Amazon Neptune✗
Virtuoso✓
CLI
Amazon Neptune✓
Virtuoso✗
Deployment
Cloud / SaaS
Amazon Neptune✓
Virtuoso✗
Self-hosted
Amazon Neptune✗
Virtuoso✓
On-premise
Amazon Neptune✗
Virtuoso✓

Integrations

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

Amazon Neptune

Leader
6 total
  • Amazon Bedrock Knowledge Bases
  • Strands AI Agents SDK
  • Amazon Bedrock
  • LangChain
  • Strands AI
  • GraphStorm
Independently observed

Virtuoso

6 total
  • SQLAlchemy
  • RDFLib
  • SQL databases
  • NoSQL databases
  • Linked Data sources
  • APIs
Independently observed
Still deciding?

Amazon Neptune or Virtuoso: 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.