APIAssert vs Checkly
Both APIAssert and Checkly offer API monitoring, but they take different approaches. Here's how they compare.
Overview
| Feature | APIAssert | Checkly |
|---|---|---|
| Focus | API monitoring with response validation | Synthetic monitoring & browser checks |
| Pricing | Starts free, simple per-check pricing | Based on check runs, more complex |
| Setup | 2-minute setup, no code required | May require Playwright scripts |
| Response Validation | Built-in JSONPath assertions | Via custom scripts |
| GraphQL | First-class support | Via HTTP checks |
When to Choose APIAssert
Choose APIAssert if you:
- Need deep response body validation without writing code
- Want simple, predictable pricing
- Focus primarily on API health (REST + GraphQL)
- Value quick setup over complex scripting
- Need multi-region monitoring from 6 locations
When to Choose Checkly
Choose Checkly if you:
- Need browser/E2E testing alongside API monitoring
- Want to write custom Playwright scripts
- Need complex multi-step transactions
- Require detailed browser performance metrics
Feature Comparison
Response Validation
APIAssert: Point-and-click assertion builder. Validate JSON paths, status codes, headers, and response times without writing code.
$.user.status == "active"
$.data.items.length > 0
responseTime < 500ms
Checkly: Requires writing JavaScript/TypeScript assertions in their check editor.
Pricing Model
APIAssert:
- Free tier with core features
- Pay per monitor, not per check run
- Predictable monthly costs
Checkly:
- Based on check runs consumed
- Costs scale with frequency
- Browser checks cost more than API checks
Multi-Region
APIAssert: 6 regions included, select per-monitor
Checkly: 20+ regions, but impacts pricing
The Bottom Line
APIAssert is purpose-built for API monitoring with a focus on response validation. If you need to ensure your APIs return correct data (not just 200 OK), APIAssert offers a simpler, more focused solution.
Checkly is better suited for teams that need browser testing and complex synthetic monitoring alongside their API checks.
Try APIAssert free — no credit card required.
