Datadog
Semrush
| Feature | Datadog | Semrush |
|---|---|---|
| Pricing | Free / from $15/mo | Free / from $139.95/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.6 / 5 |
| Best For | devops-teams, sre-teams, cloud-native-companies, enterprises | digital-marketers, agencies, enterprise, ppc-managers |
| Founded | 2010 | 2008 |
| Infrastructure Monitoring | ✓ | ✗ |
| Apm | ✓ | ✗ |
| Log Management | ✓ | ✗ |
| Synthetics | ✓ | ✗ |
| Real User Monitoring | ✓ | ✗ |
| Security Monitoring | ✓ | ✗ |
| Dashboards | ✓ | ✗ |
| Alerting | ✓ | ✗ |
| Keyword Research | ✗ | ✓ |
| Site Audit | ✗ | ✓ |
| Rank Tracking | ✗ | ✓ |
| Competitor Analysis | ✗ | ✓ |
| Ppc Tools | ✗ | ✓ |
| Content Marketing | ✗ | ✓ |
| Social Media | ✗ | ✓ |
✓ Datadog Pros
- Unified platform for metrics, traces, logs, and security
- 750+ integrations with cloud services and tools
- Powerful dashboards and alerting system
- AI-powered anomaly detection
✗ Datadog Cons
- Per-host pricing becomes expensive at scale
- Complex pricing with many add-ons
- Data ingestion costs can be unpredictable
✓ Semrush Pros
- Most comprehensive marketing toolkit
- Excellent PPC and advertising tools
- Content marketing platform included
- Social media management built-in
✗ Semrush Cons
- Very expensive for small businesses
- Interface can feel overwhelming
- Some data less accurate for non-US markets
The Verdict
Datadog is built for devops teams and sre teams, with a focus on infrastructure-monitoring and apm. Semrush targets digital marketers and agencies and leads with keyword-research and site-audit.
On pricing, Datadog is the clear winner for budget-conscious users — starting at $15/mo compared to $139.95/mo for Semrush. That $124.94999999999999/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Datadog offers broader built-in capabilities (8 features vs 7), while Semrush takes a more focused approach — which can mean a simpler, faster onboarding experience.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.