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Software · head to head

Elastic Stack vs PostHog

Elastic Stack logo

Elastic Stack

Software

Search, Observability, and Security Solutions

From
On request
Rated
-
Full reviewWebsite
PostHog logo

PostHog

Software

The single platform to analyze, test, observe, and deploy new features

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only PostHog has a free tier, so it costs nothing to try first.
  • Each has a real cost: Elastic Stack self-managed deployment requires licensing based on node count and RAM usage; PostHog the free tier covers 1M events, 5K web session recordings and 2.5K mobile recordings per month before usage-based billing starts
  • They diverge on capability: Elastic Stack covers Full-text search, PostHog covers Product analytics.

Where they differ

Only the attributes on which Elastic Stack and PostHog actually diverge.

Attributes where Elastic Stack and PostHog differ
AttributeElastic StackPostHog
Starting priceOn requestFree
Pricing modelsubscriptionusage-based
Free tierNoYes
PlatformsCloud-hosted, Self-managed, Docker, Kubernetes (ECK)Web, Ios, Android, Api
Founded20112020

Identical on both: user rating (Not yet rated), category (Unknown).

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 Elastic Stack

  • Full-text search
  • Log analytics
  • Security monitoring
  • Alerting
  • API
  • Webhooks
  • REST
  • Web support

Only in PostHog

  • Product analytics
  • Session recording
  • Feature flags
  • A/B testing
  • Heatmaps
  • SQL access
  • Data warehouse
  • Apps platform

What people use each for

The jobs each tool is most often brought in to do.

Elastic Stack

  • Distributed search and analytics engine for production-scale workloadsnot PostHog
  • Full-text search and vector search with approximate nearest neighbour supportnot PostHog
  • Security event tracking with field-level and document-level access controlnot PostHog
  • Machine learning capabilities including anomaly detection and forecastingnot PostHog

PostHog

  • Product analyticsnot Elastic Stack
  • Feature experimentationnot Elastic Stack
  • User behavior trackingnot Elastic Stack
  • A/B testingnot Elastic Stack
  • Debug production issuesnot Elastic Stack

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Elastic Stack

  • Self-managed deployment requires licensing based on node count and RAM usage
  • Serverless option has pending features including traffic filtering and bring-your-own-key encryption
  • Hosted deployment requires custom resource configuration for cluster management
  • Pricing models differ significantly across Hosted, Serverless, and Self-managed options

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

Pricing, plan by plan

Elastic Stack

On request

No published plan breakdown. See the Elastic Stack review.

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

Which should you pick?

Choose Elastic Stack if

  • You need full-text search.
  • You work on Cloud-hosted, Self-managed, Docker, Kubernetes (ECK).
  • You also want log analytics.
Elastic Stack review

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.
PostHog review

Questions people ask

Is Elastic Stack or PostHog better?
Neither clearly leads. Elastic Stack starts at On request and PostHog at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Elastic Stack or PostHog?
PostHog has a free tier; the other does not. Paid plans start at On request for Elastic Stack and Free for PostHog.
Does Elastic Stack or PostHog run on more platforms?
Elastic Stack runs on Cloud-hosted, Self-managed, Docker, Kubernetes (ECK). PostHog runs on Web, Ios, Android, Api.
Can I use PostHog for free?
Yes. PostHog has a free tier, so you can try it without paying. Elastic Stack starts at On request.
What is Elastic Stack best used for?
Elastic Stack is most often used for distributed search and analytics engine for production-scale workloads, full-text search and vector search with approximate nearest neighbour support, security event tracking with field-level and document-level access control, machine learning capabilities including anomaly detection and forecasting. Of those, distributed search and analytics engine for production-scale workloads and full-text search and vector search with approximate nearest neighbour support are not what PostHog is typically brought in for.
What can Elastic Stack do that PostHog cannot?
Elastic Stack covers Full-text search, Log analytics, Security monitoring, Alerting. PostHog covers Product analytics, Session recording, Feature flags, A/B testing.
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