Decision comparison
Checkly vs Datadog
Checkly is the superior choice for teams focused on synthetic monitoring, offering deeper Playwright integration, monitoring-as-code workflow, and predictable pricing starting at $24/month. Datadog is the right choice when synthetic monitoring is one piece of a broader full-stack observability strategy requiring cross-signal correlation across APM, infrastructure, logs, and synthetic tests.
Architecture choice. These take different approaches to the same problem. Read the table as a fit question rather than a feature race.
These are different kinds of product — Synthetic Monitoring and Observability Platform.
Quick Comparison
| Decision factor | Checkly | Datadog |
|---|---|---|
| Best For | Developer teams needing focused synthetic monitoring with monitoring-as-code workflow | Platform teams needing unified full-stack observability across infrastructure, APM, logs, and synthetics |
| Architecture | Specialist synthetic monitoring platform with Playwright-native browser checks | Full-stack observability platform with agent-based collection and 750+ integrations |
| Pricing Model | Checkly offers free Hobby tier plus paid plans. Hobby (Free): 10 uptime monitors, 1K browser checks/mo, 10K API checks/mo, 1 user. Starter ($24/mo): 50 monitors, 3K browser, 25K API, 3 users, 1-min check frequency. Team ($64/mo): 75 monitors, 12K browser, 100K API, 10 users, 30-sec frequency, private locations, visual regression. Enterprise (custom): custom limits, 1-sec frequency, SAML/SSO, 180-day raw data retention. Add-ons: +25 monitors $8, +1K browser runs $4. Startup discount: 30%. Nonprofit discount: 50%. | Free tier available, paid plans start at $0.75 per host per month, additional costs based on usage and features |
| Ease of Use | Fast setup; monitoring-as-code CLI integrates into existing Git and CI/CD workflows | Steeper learning curve; powerful once configured; extensive documentation and community |
| Scalability | Scales synthetic checks across 20+ global locations with private location support | Proven at massive scale with thousands of hosts, petabytes of logs, trillions of data points |
| Integration Ecosystem | Focused: Slack, PagerDuty, Opsgenie, webhooks; pairs with external APM/logging tools | Massive: 750+ integrations covering every major cloud, database, container, and SaaS service |
Checkly
- Best For:
- Developer teams needing focused synthetic monitoring with monitoring-as-code workflow
- Architecture:
- Specialist synthetic monitoring platform with Playwright-native browser checks
- Pricing Model:
- Checkly offers free Hobby tier plus paid plans. Hobby (Free): 10 uptime monitors, 1K browser checks/mo, 10K API checks/mo, 1 user. Starter ($24/mo): 50 monitors, 3K browser, 25K API, 3 users, 1-min check frequency. Team ($64/mo): 75 monitors, 12K browser, 100K API, 10 users, 30-sec frequency, private locations, visual regression. Enterprise (custom): custom limits, 1-sec frequency, SAML/SSO, 180-day raw data retention. Add-ons: +25 monitors $8, +1K browser runs $4. Startup discount: 30%. Nonprofit discount: 50%.
- Ease of Use:
- Fast setup; monitoring-as-code CLI integrates into existing Git and CI/CD workflows
- Scalability:
- Scales synthetic checks across 20+ global locations with private location support
- Integration Ecosystem:
- Focused: Slack, PagerDuty, Opsgenie, webhooks; pairs with external APM/logging tools
Datadog
- Best For:
- Platform teams needing unified full-stack observability across infrastructure, APM, logs, and synthetics
- Architecture:
- Full-stack observability platform with agent-based collection and 750+ integrations
- Pricing Model:
- Free tier available, paid plans start at $0.75 per host per month, additional costs based on usage and features
- Ease of Use:
- Steeper learning curve; powerful once configured; extensive documentation and community
- Scalability:
- Proven at massive scale with thousands of hosts, petabytes of logs, trillions of data points
- Integration Ecosystem:
- Massive: 750+ integrations covering every major cloud, database, container, and SaaS service
Public signals
Verified factual signals only. Bars appear only for like-for-like metrics with five weekly assessments for every tool; missing evidence stays explicit. These signals do not establish enterprise adoption, product quality, or total cost.
| Metric | Checkly | Datadog |
|---|---|---|
| GitHub commits, 90d(Developer adoption) | 98 | 2.4k |
| GitHub stars(Developer adoption) | 97 | 3,500+ |
| Search interest(Market interest) | 0 | 14 |
| Hacker News mentions, 90d(Community interest) | 1 | 16 |
| npm weekly downloads(Developer adoption) | 223.3k | 7.3M |
| Stack Overflow questions(Community interest) | 2 | 1.1k |
| Hugging Face downloads(Product adoption) | Not available | 96.6k |
| Hugging Face likes(Product adoption) | Not available | 220 |
| Product Hunt comments(Community interest) | Not available | 1 |
| Product Hunt rating(Community interest) | Not available | 5.0/5 |
| Product Hunt reviews(Community interest) | Not available | 13 |
| Product Hunt votes(Community interest) | Not available | 75 |
| PyPI weekly downloads(Developer adoption) | Not available | 11.0M |
As of September 14, 2026 — updated weekly.
Health & risk evidence
Observed public-source checks for mapped package versions and repositories.
Checkly
September 14, 2026Package vulnerabilities
npm · checkly@9.3.0
0 vulnerabilities
across 1 package
Repository security score
Not available
Datadog
September 14, 2026Package vulnerabilities
PyPI · datadog@0.53.0 · npm · dd-trace@6.16.0
0 vulnerabilities
across 2 packages
Repository security score
github.com/DataDog/datadog-agent
5.9/10
Interface Preview
Checkly
Feature Comparison
| Feature | Checkly | Datadog |
|---|---|---|
| Synthetic Monitoring | ||
| Browser Checks | Playwright-based with full scripting, visual regression, and multi-step flows | Chromium-based recorder plus code editor with managed browser infrastructure |
| API Monitoring | HTTP/HTTPS with assertions, setup/teardown scripts, and chained requests | HTTP, SSL, DNS, TCP, UDP, ICMP, WebSocket, and gRPC checks |
| Check Frequency | 1 min (Starter), 30 sec (Team), 1 sec (Enterprise) | 1 min minimum for most synthetic test types |
| Global Locations | 20+ global checkpoint locations with parallel execution | 100+ global locations for synthetic tests |
| Private Locations | Available on Team plan ($64/mo) for internal endpoint monitoring | Agent-based private locations on all paid synthetic plans |
| Developer Workflow | ||
| Monitoring-as-Code | First-class CLI with TypeScript/JavaScript definitions, Git-native workflow | Terraform provider and API configuration; not a core workflow pattern |
| CI/CD Integration | Native CLI for running checks in CI pipelines before deployment | CI Visibility product for test and pipeline observability |
| Alerting Integrations | Slack, PagerDuty, Opsgenie, email, webhooks with configurable thresholds | 750+ integrations with anomaly detection, composite monitors, SLO-based alerts |
| Full-Stack Observability | ||
| APM / Distributed Tracing | Not available; synthetic monitoring specialist only | Full distributed tracing with auto-instrumentation for 15+ languages |
| Log Management | Not available; pairs with external log aggregators | Integrated log ingestion, search, analytics, and trace correlation |
| Infrastructure Monitoring | Not available; synthetic-only platform | Agent-based host, container, serverless, network monitoring with 750+ integrations |
| Real User Monitoring | Not available; synthetic monitoring only | Full RUM with session replay, error tracking, and performance metrics |
| Security Monitoring | Not available; security is outside product scope | Cloud SIEM, application security, cloud security posture management |
| Pricing & Plans | ||
| Free Tier | 10 monitors, 1K browser / 10K API runs, 1 user | 5 hosts, 1-day metric retention, limited features |
| Entry Pricing | Starter: $24/mo flat (50 monitors, 3K browser, 25K API, 3 users) | Infrastructure Pro: ~$15/host/mo; Synthetic: ~$1.80/10K test runs |
Synthetic Monitoring
Browser Checks
API Monitoring
Check Frequency
Global Locations
Private Locations
Developer Workflow
Monitoring-as-Code
CI/CD Integration
Alerting Integrations
Full-Stack Observability
APM / Distributed Tracing
Log Management
Infrastructure Monitoring
Real User Monitoring
Security Monitoring
Pricing & Plans
Free Tier
Entry Pricing
Which approach fits
Checkly is the superior choice for teams focused on synthetic monitoring, offering deeper Playwright integration, monitoring-as-code workflow, and predictable pricing starting at $24/month. Datadog is the right choice when synthetic monitoring is one piece of a broader full-stack observability strategy requiring cross-signal correlation across APM, infrastructure, logs, and synthetic tests.
When each approach fits
Choose Checkly if:
Choose Checkly for focused synthetic monitoring of web applications and APIs with monitoring-as-code workflow, Playwright browser checks, and predictable flat-rate pricing
Choose Datadog if:
Choose Datadog for unified full-stack observability where synthetic monitoring needs to correlate with APM traces, infrastructure metrics, and log data across complex distributed architectures
Choose Checkly if:
Choose Checkly for budget-conscious teams and startups where the $24/month entry price and transparent billing prevent cost surprises common with usage-based platforms
These scenarios reflect the available product evidence. Your requirements, existing stack, and team expertise should guide the final decision.
Frequently Asked Questions
Can Checkly replace Datadog for monitoring?
No, not as a full replacement. Checkly covers synthetic monitoring (browser checks, API checks, uptime monitoring) but does not provide APM, log management, infrastructure monitoring, or real user monitoring. If your team only needs synthetic monitoring, Checkly is a superior and cheaper choice. If you need full-stack observability, Checkly handles one piece and you would need additional tools for the rest.
Is Datadog's synthetic monitoring as good as Checkly's?
Datadog's synthetic monitoring is capable but less developer-friendly than Checkly's purpose-built platform. Datadog supports browser tests and API tests with global coverage, but lacks Checkly's native Playwright integration, monitoring-as-code CLI, and 30-second check frequencies on mid-tier plans. Datadog's synthetic product shines in integration: correlating failures with APM traces and infrastructure metrics.
How do Checkly and Datadog pricing compare for a 20-person engineering team?
For synthetic monitoring only: Checkly's Team plan at $64/month covers 10 users with 75 monitors and 12,000 browser runs. Comparable Datadog synthetic coverage costs $100-300/month depending on volume. For full-stack observability on Datadog with 20 hosts, expect $800-2,000/month or more depending on log volume and APM retention.
Does Checkly support monitoring internal services behind a firewall?
Yes. Checkly's Team plan ($64/month) and Enterprise plan include private locations, which let you run checks from agents deployed inside your network for monitoring internal APIs, staging environments, and services not exposed to the public internet.