vioscaleAI
Comparison

Confluent Cloud vs NATS

On the evidence we track, Confluent Cloud leads this comparison with a composite score of 93/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Confluent Cloud full profile →NATS full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
★Confluent Cloud93
NATS68
Score
vioscaleAI score
Confluent Cloud93 / 100medium · 73%
NATS68 / 100medium · 58%
Pricing
Free tier
Confluent Cloud✓
NATS✓
Model
Confluent Cloudfreemium
NATSopen_source
Price level
Confluent Cloudlow
NATSfree
Starting price
Confluent Cloud$0.02
NATS–
Transparent
Confluent Cloud✓
NATS–
Integrations
Count
Confluent Cloud120
NATS12
Security
Certifications
Disclosure policy
Confluent Cloud✓
NATS✓
Fedramp
Confluent Cloud✓
NATS–
Gdpr
Confluent Cloud✓
NATS✓
Hipaa
Confluent Cloud✓
NATS–
Iso27001
Confluent Cloud✓
NATS–
Pci
Confluent Cloud✓
NATS–
Scorecard
Confluent Cloud–
NATS7.4
Soc2
Confluent Cloud✓
NATS–
Trust center
Vulnerabilities
Reliability
Sla pct
Confluent Cloud99.99
NATS–
Status page
Confluent Cloud✓
NATS–
Adoption
Dependent repos
Confluent Cloud–
NATS24,884
Github stars
Confluent Cloud–
NATS20,867
Package downloads weekly
Confluent Cloud–
NATS1,353,667
Activity
Commits last 30d
Confluent Cloud–
NATS100
Release
Cadence days
Confluent Cloud–
NATS1
History
Confluent Cloud–
NATS20 items
License
Spdx
Confluent Cloud–
NATSApache-2.0
Language
Primary
Confluent Cloud–
NATSGo
Market
Availability
Content
Faq
Confluent Cloud6 items
NATS6 items

Capabilities

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

Core
Messaging paradigm
Confluent CloudPub/sub
NATSPub/sub
Correctness
Delivery guarantee
Confluent CloudExactly-once
NATS-
Ordering guarantee
Confluent CloudPer-partition
NATS-
Durability
Durable replayable log
Confluent Cloud✓
NATS✓
Message replay / rewind
Confluent Cloud✓
NATS✓
Interop
Wire protocol
Confluent CloudKafka protocol, REST API
NATS-
Kafka-protocol compatible
Confluent Cloud✓
NATS-
Scale
Partitioned horizontal scaling
Confluent Cloud✓
NATS✓
Geo / cross-region replication
Confluent Cloud✓
NATS✓
Consumption
Consumer groups / competing consumers
Confluent Cloud✓
NATS✓
Dead-letter queue
Confluent Cloud-
NATS-
Deployment
Managed cloud offering exists
Confluent Cloud✓
NATS✓
Hosting
Confluent CloudCloud only
NATSSelf-hosted only
Processing
Built-in stream processing
Confluent Cloud✓
NATS-

What each one is

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

Confluent Cloud

Leader

Confluent Cloud is a managed Kafka service that automates infrastructure management and scaling across multiple cloud providers. It combines Kafka for streaming data with integrated Apache Flink for stream processing, providing enterprise-grade security, hundreds of pre-built connectors, and usage-based pricing with no upfront capacity provisioning required.

Independently observed

NATS

An open-source, lightweight messaging platform that combines pub/sub, request/reply, and persistent streaming capabilities into a single system for building high-performance distributed applications.

Independently observed

Pricing

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

Confluent Cloud

Leader
from $0.02/GBUsage-basedFree tier120-day trial

Free tier available. Pay-as-you-go usage pricing ($0.14-2.25/eCKU-hour depending on tier, $0.035-0.050/GB networking, $0.03-0.08/GB-month storage). Annual commitments available with tiered discounts. $400 free credits for new users over 4 months.

  • FreeFree
    • Autoscaling
    • Kafka ACLs
    • Data encryption
    • Audit logs
    • RBAC
    • +1 more
  • Standard~$385/month typical. $0.75/eCKU-hour, $0.035-0.050/GB networking, $0.03/GB/month storage
    • Autoscaling at scale
    • Advanced governance
    • Audit logs
    • SAML/SSO
    • RBAC
    • +1 more
  • Enterprise~$895/month typical. $1.75-2.25/eCKU-hour (min 2), $0.020-0.050/GB networking, tiered storage
    • GBps+ autoscaling
    • Private networking
    • Client-side field-level encryption
    • Advanced monitoring
    • All security features
as of verify ↗

NATS

Open sourceFree tier
as of verify ↗

Platform & deployment

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

Platforms
Web
Confluent Cloud✓
NATS✓
CLI
Confluent Cloud✓
NATS✓
Deployment
Cloud / SaaS
Confluent Cloud✓
NATS✓
Self-hosted
Confluent Cloud✗
NATS✓

Integrations

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

In common (1)
  • Apache Flink

Confluent Cloud

Leader
16 total - 15 not shared
  • Salesforce
  • Google Ads
  • Google Analytics
  • Hotjar
  • Quickbooks
  • MySQL
  • Schema Registry
  • Apache Iceberg
  • Delta Lake
  • Slack
  • Amazon S3
  • Elasticsearch
  • AWS S3
  • Google Cloud Storage
  • Azure Blob Storage
Independently observed

NATS

12 total - 11 not shared
  • Stripe
  • Apache Kafka
  • Apache Spark
  • RabbitMQ
  • Prometheus
  • RisingWave
  • Caddy
  • Deepstream
  • Synadia
  • Gatling
  • Yii
Independently observed
Still deciding?

Confluent Cloud or NATS: 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.