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Checkly vs ApiNotes

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Checkly compared with ApiNotes
Detail ChecklyApiNotes logo ApiNotes
What it doesThe active reliability layer for developers & agents API documentation tool with automatic changelogs and breaking-change detection
StageGrowing Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingFree tier for personal projects with 10 uptime monitors and 1,000 browser checks. Starter at $24/month with 50 uptime monitors and 3,000 browser checks. Team at $64/month with 75 uptime monitors and 12,000 browser checks. Enterprise with custom pricing and unlimited features. Starter: Free (1 API, public only, up to 25 subscribers); Team: $19/month (5 APIs, unlimited subscribers)
Key features
  • Uptime monitoring
  • Synthetic browser tests
  • API and multistep checks
  • Heartbeat monitoring
  • Status pages
  • AI root cause analysis
  • OpenTel tracing
  • Monitoring as code
  • Global monitoring locations
  • Automatic API Changelog Generation
  • Breaking-Change Detection & Diffs
  • Interactive REST API Documentation
  • OpenAPI 3.1, 3.0 & Swagger 2.0 Support
  • Code Examples in 10+ Languages
  • Custom Domain Support
  • GitHub Integration
  • OpenAPI Validator
  • Spec Diff Tool
  • cURL to OpenAPI Converter
What makes it different
  • Code-first approach with TypeScript/JavaScript, Terraform, and Pulumi
  • AI-native workflow with agent integration and prompt-to-monitor in seconds
  • Unified platform combining testing, monitoring, incident management and observability
  • AI root cause analysis with Rocky AI for automated failure diagnosis
  • Auto-written changelog with breaking-change alerts on every spec update
  • 80% cheaper than Stoplight and ReadMe
  • 5-minute setup with no complex configuration
  • Interactive API testing built into documentation
  • Automatic subscriber notifications on spec changes
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)74 no change since last check25 −1 (down) since last check
Trust Flow (Majestic)3510
Citation Flow (Majestic)5126
Referring domains (Majestic)235965

5 details filled in for both companies.

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