Technology · head to head
PostHog vs Datadog
PostHog
Technology
The single platform to analyze, test, observe, and deploy new features
- From
- Free
- Rated
- -
The short version
- Only PostHog has a free tier, so it costs nothing to try first.
- Each has a real cost: PostHog the free tier covers 1M events, 5K web session recordings and 2.5K mobile recordings per month before usage-based billing starts; Datadog consumption-based pricing model makes costs hard to predict and can scale quickly
- They diverge on capability: PostHog covers Product analytics, Datadog covers Infrastructure monitoring.
Where they differ
Only the attributes on which PostHog and Datadog actually diverge.
Identical on both: user rating (Not yet rated), category (Technology).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in PostHog
- Product analytics
- Session recording
- Feature flags
- A/B testing
- Heatmaps
- SQL access
- Data warehouse
- Apps platform
Only in Datadog
- Infrastructure monitoring
- Application performance monitoring
- Log management
- Real user monitoring
- Synthetic monitoring
- Security monitoring
- Network monitoring
- Serverless monitoring
Both cover
- Slack
- SOC2
- HIPAA
What people use each for
The jobs each tool is most often brought in to do.
PostHog
- Product analyticsnot Datadog
- Feature experimentationnot Datadog
- User behavior trackingnot Datadog
- A/B testingnot Datadog
- Debug production issuesnot Datadog
Datadog
- Infrastructure monitoringnot PostHog
- Application performancenot PostHog
- Security monitoringnot PostHog
- Log analysisnot PostHog
- Cloud monitoringnot PostHog
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
PostHog
- The free tier covers 1M events, 5K web session recordings and 2.5K mobile recordings per month before usage-based billing starts
- Accounts without a card on file are limited to 1 project; adding one raises it to 6
- Data retention is 1 year until a card is added, which extends it to 7 years
- Support is community-only until the account is on a paid plan
- Error tracking is capped at 100K exceptions and surveys at 1500 responses per month on the free tier
Datadog
- Consumption-based pricing model makes costs hard to predict and can scale quickly
- Add-on modules significantly increase costs: custom metrics, indexed spans, extended retention
- No free tier for production monitoring
- High costs for organizations with large amounts of log data or high-cardinality metrics
Pricing, plan by plan
PostHog
Free- FreeFree
- 1M events/month
- 5K sessions/month
- Unlimited users
- Paid$undefined/month
- $0.00031/event
- $0.005/session
- Advanced permissions
- Enterprise$undefined/month
- SAML SSO
- Advanced security
- Dedicated support
Datadog
$15/month- Infrastructure Monitoring$15/month
- Host monitoring
- Basic dashboards
- APM$31/month
- Application performance monitoring
- Trace collection
- Log Management$0.1/gb
- Log indexing
- Search and filter
Which should you pick?
Choose PostHog if
- You need product analytics.
- You want to start without paying.
- You work on Web, Ios, Android, Api.
- You also want session recording.
Choose Datadog if
- You need infrastructure monitoring.
- You work on Web, Linux, Windows, macOS.
- You also want application performance monitoring.
Questions people ask
- Is PostHog or Datadog better?
- Neither clearly leads. PostHog starts at Free and Datadog at $15/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, PostHog or Datadog?
- PostHog has a free tier; the other does not. Paid plans start at Free for PostHog and $15/month for Datadog.
- Does PostHog or Datadog run on more platforms?
- PostHog runs on Web, Ios, Android, Api. Datadog runs on Web, Linux, Windows, macOS.
- Can I use PostHog for free?
- Yes. PostHog has a free tier, so you can try it without paying. Datadog starts at $15/month.
- What is PostHog best used for?
- PostHog is most often used for product analytics, feature experimentation, user behavior tracking, a/b testing. Of those, product analytics and feature experimentation are not what Datadog is typically brought in for.
- What can PostHog do that Datadog cannot?
- PostHog covers Product analytics, Session recording, Feature flags, A/B testing. Datadog covers Infrastructure monitoring, Application performance monitoring, Log management, Real user monitoring. Both handle Slack, SOC2, HIPAA.
Answered from the vendors’ own pages
Datadog: How is Datadog pricing structured?
Datadog uses consumption-based pricing tied to data volume ingested, hosts monitored, and products enabled. Infrastructure Monitoring starts at $15/host/month, APM at $31/host/month, and Log Management at $0.10/GB for indexed logs.
SourceDatadog: Does Datadog offer a free tier?
Datadog offers a free trial but not a permanent free tier for production monitoring. Pricing begins with paid plans only.
SourceDatadog: What integrations does Datadog support?
Datadog offers 1000+ built-in integrations including AWS, Kubernetes, Docker, Azure, GCP, and most major cloud platforms and services.
SourceDatadog: Can Datadog monitor Kubernetes clusters?
Yes. The Datadog Agent runs as a DaemonSet to provide real-time visibility into pods, nodes, deployments, and control-plane health across major Kubernetes distributions including EKS, AKS, GKE, OpenShift, and others.
SourceDatadog: How can I reduce Datadog costs?
Datadog bills based on indexed logs, custom metrics, and high-cardinality tags. Costs can be unpredictable and may run 2-3x estimates. Prepaying annually can secure 5-15% discounts.
Source