⚡Stack Radar

A/B Testing · Reviewed 20 Oct 2026

PostHog

A product analytics and experimentation platform for engineers.

free tier · posthog.com ↗

Paid against free › A/B Testing › PostHog

PostHog at a glance
3.6MEstimated total trafficModeled monthly visits5.6KRanking keywordsPublic search sample96/100Technical health15 pages checked31KReferring domainsLive backlink summary

Overview

01

Summary

The useful answer before the supporting detail.

PostHog is a single platform for people who build things, providing tools for product analytics, session replay, feature flags, experiments, and more S1 S29. It is used by engineers and product teams to understand user behavior, validate ideas, and ship features safely S29 S47. The platform offers a generous free tier and usage-based pricing, making it accessible for startups and established companies alike S1 S52.

02

Product identity and positioning

Name, category, positioning, audience, and first-party claims.

  • Identity: PostHog is a product analytics and experimentation platform for engineers S29.
  • Core purpose: Helps teams analyze, test, observe, and deploy new features S29.
  • Intended users: Engineers and product teams building software products S29.
  • Product scope: A single platform with multiple integrated tools, including analytics, session replay, feature flags, and experiments S29.
  • Positioning: Positioned as a self-driving product toolkit, emphasizing honest communication and transparent pricing S1.
  • Claimed distinction: Claims to be priced to match the cheapest major competitor with a generous free tier S1.
03

Use cases and audiences

Who the product serves and the jobs it is designed to handle.

AudiencePractical use case
Product engineersValidate onboarding, pricing, or UI changes with experiments before committing S47.
Growth teamsLaunch A/B tests on pricing pages to improve signup conversion S47.
Data analystsConnect drops or spikes in user behavior to recent code changes S157.
Startup foundersUse the free tier to try out features without a credit card S52.

Features

09

Features and capabilities

Core functions and evidence-backed product capabilities.

CapabilityWhat it does
Product AnalyticsAnalyze user behavior with funnels, retention, and paths; autocapture works out of the box on web S157.
Session ReplayReplay user sessions to understand behavior and identify issues S29.
Feature FlagsControl rollouts and ship safely with SDKs for web, mobile, and backend S156.
ExperimentsRun A/B, A/B/n, holdout, fake door, and redirect tests with statistical significance S47.
SurveysCollect user feedback directly within the platform S29.
Error TrackingMonitor and track errors in your application S29.
AI ObservabilityMonitor and evaluate AI features and models S29.
Data WarehouseStore and query your data with Sources, including real-time destinations S29.
10

Integrations and ecosystem

Connected products, exports, APIs, and workflow compatibility.

Integration or interfaceTypeWhat it enables
SDKsSDKSend events and implement feature flags from web, mobile, and backend S156.
FrameworksSDKIntegrate with frameworks like Svelte/SvelteKit S47.
ServicesIntegrationConnect to third-party services for data import/export S29.
APIAPIEvaluate feature flags over the API S156.
MCP serverAI interfaceConnect AI assistants to query usage data for pricing estimates S73.

Pricing

11

Pricing and plans

Published plans, free access, trials, credits, and pricing limitations.

Plan or offerVerified price and billingIncludedLimits
Free$0 monthly S521M flag requests, 1M analytics events, 5K session recordings per month S521 project, 1-year retention; usage stops at limits S52
Pay-as-you-go$0.0001 per flag request from 1M to 2M, falling to $0.00001 above 50M S52Unlimited usage S526 projects, 7-year retention, per-product billing limits S52

Competition

12

Alternative tools

Named from this report, then each website opened and checked before it is shown.

MixpanelProduct Intelligence Platform for the AI Era | MixpanelLike PostHog, it provides powerful product analytics with a generous free tier, but focuses strictly on analytics rather than bundling session replay, error tracking, and feature flags.AmplitudeAmplitude | A new era for product teamsIt offers advanced product analytics and experimentation similar to PostHog, but targets enterprise-scale companies with higher pricing rather than developer-first solo builders.LogRocketSession Replay | Product Analytics | Error Tracking | LogRocketIt combines session replay and product analytics like PostHog, but places a heavier emphasis on frontend performance monitoring and frontend error tracking.LaunchDarklyRuntime Control for AI-Era Software | Feature Flags & AI Agent Control | LaunchDarklyIt matches PostHog's feature flag and experimentation capabilities, but operates as an enterprise-grade dedicated feature management platform rather than an all-in-one suite.

4 verified

13

Competitive landscape

Domains competing for the same organic search demand.

Sampled competitors

CompetitorFirst-page appearancesSampled queriesAverage positionQueries observed
learn.microsoft.com111channel type
harness.io112guard rail metrics
discord.js.org112channel type
mixpanel.com113guard rail metrics
c-sharpcorner.com113channel type
statsig.com114guard rail metrics
stackoverflow.com114channel type
kameleoon.com115guard rail metrics
docs.oracle.com115channel type
wingify.com116guard rail metrics

Website intelligence — Collected evidence

Customers, testimonials, and first-party review claims

No supporting public-page evidence was collected for this category.

Independent review sources discovered

No links to supported independent review platforms were discovered on the collected pages.

Website intelligence — Scout synthesis

  • Pricing differentiation: PostHog claims to be cheaper than competitors for session replay and anonymous events, with a blog post stating "making PostHog the cheapest session replay tool in its class" W88W89.
  • Usage-based pricing: PostHog charges based on usage, unlike competitors that charge per user/session/event uniformly W91.
  • AI features: PostHog integrates AI agents and MCP, which may be a differentiator W11W207.
15

AI visibility

Measured ChatGPT and Google AI mentions with cited sources.

AI-assistant referral traffic

  • Estimated current generative-AI referral share: 1.7%
MonthSource
—All AI assistants
—All AI assistants
—All AI assistants

Website intelligence — Collected evidence

Site-stated AI capabilities

Page typeEvidenceSource
featuresAI Research EngineerAI Research Teamhttps://posthog.com/careers/product-engineer
featuresAI Observabilityhttps://posthog.com/teams/cloud-platform
featuresAI Researchhttps://posthog.com/teams/cloud-platform
featuresInstall with AIhttps://posthog.com/
featuresIllustrative demo: PostHog AI investigates falling paid conversion using Google Ads traffic, PostHog funnels, Stripe payments, and GitHub changes. It finds an extra required field at mobile checkout and recommends testing a shorter checkout. All findings are sample data.https://posthog.com/
featuresPostHog AISample datahttps://posthog.com/
featuresGet started - freeInstall with AIhttps://posthog.com/feature-flags
featuresInstall with AI in a single prompthttps://posthog.com/feature-flags
featuresPaste into your terminal or code editor and make AI do the work.https://posthog.com/feature-flags
featuresGet started - freeInstall with AIhttps://posthog.com/product-analytics
featuresInstall with AI in a single prompthttps://posthog.com/product-analytics
featuresPaste into your terminal or code editor and make AI do the work.https://posthog.com/product-analytics
featuresAI Research EngineerAI Research Teamhttps://posthog.com/careers/product-engineer

These are first-party product claims, not independent measurements of AI-search visibility.

Website intelligence — Scout synthesis

  • AI product: PostHog AI is featured on the homepage, with an illustrative demo of investigating falling paid conversion W11W16.
  • MCP support: PostHog offers MCP integration for feature flags and product analytics, allowing AI agents to query data W207W231.
  • AI observability: PostHog has a dedicated team page for AI Observability W100.
  • AI research: Team page for AI Research exists W101.
16

Marketing opportunities

Actions calculated directly from the collected evidence.

OpportunityRecommended actionEvidence
Competitor gapReview the sampled queries where learn.microsoft.com appears.1 first-page appearances across channel type

Website intelligence — Collected evidence

Website evidence gaps

  • integrations: no usable public page was collected; verify whether the site publishes this evidence.
  • customers: no usable public page was collected; verify whether the site publishes this evidence.
  • reviews: no usable public page was collected; verify whether the site publishes this evidence.
  • changes: no usable public page was collected; verify whether the site publishes this evidence.
  • identity: no usable public page was collected; verify whether the site publishes this evidence.
  • technical: no usable public page was collected; verify whether the site publishes this evidence.

Website intelligence — Scout synthesis

  • Free tier messaging: Emphasize that 97% of companies use PostHog for free, with no credit card required W51W53.
  • Cost savings: Highlight the 80% cheaper anonymous events and the deliberate revenue decline to attract cost-conscious users W89W90.
  • AI integration: Promote MCP capabilities for developers using AI coding assistants W207W231.
  • Enterprise features: Showcase platform packages for security and compliance (SSO, HIPAA BAA) W29W40.
  • Pre-paid plans: Offer discounts for committed usage, appealing to larger companies W156W160.

Trust and proof

17

Customers, proof, and reviews

Published proof, customer signals, and review evidence.

Independent reviews

PlatformPageHow it was foundNote
posthog.comHow YC's biggest startups run A/B tests (with examples) - PostHogGrounded web searchMonzo, an online banking app, provides a classic example for how to run A/B tests. Monzo's team focus on top-of-funnel tests (because those impact the most users) and run about 4 per month. Most tests are simple page comparisons,
posthog.comGuardrail metrics for A/B tests, explained - PostHogGrounded web searchA team responsible for increasing bookings ran a test where the house rules weren't shown at checkout. This increased bookings, but decreased one of the test's guardrail metrics: review ratings. ... an A/B test triggers a guardrail metric at Airbnb, it's

Customer proof

Proof typeNamed customer or sourceEvidence
Case studyY Combinator (Cat)customer case study — Since starting with PostHog, Y Combinator has gone beyond analytics and begun using more PostHog features, such as experiments and session replays, to explore data from multiple angles at once. (How Y Combinator used PostHog experiments to boost engagement by 40% - PostHog)
Case studyWebshare (Utku)customer case study — “We’re running about 20 experiments at any moment,” says Utku. (How Webshare replaced Mixpanel, Hotjar, and FullStory with PostHog - PostHog)
Case study4DayWeek (Phil)customer case study — “I made the call to end the experiment early and deploy the test version,” says Phil. (How 4DayWeek increased conversion by 4% with one A/B experiment - PostHog)

Independent mentions

  • Experiments – Run tests and validate ideas with PostHog — Experiments let you run A/B, A/B/n, holdout, fake door ... . Create an experiment (which creates a feature flag), pick primary and secondary metrics, target ... tell you what won – and you can watch session replays for each variant when you need the why
  • Experiments & A/B testing best practices — can be attributed to what was changed. If there are multiple changes, it's difficult to determine which one caused the change in behavior. The caveat here is that too small of change can slow your team down. Since running experiments takes time, if
  • What launching Experimentation taught us about running effective A/B tests — You just finished running the experiment above, and the results are in. Horizontal funnel layout had 1,000 interactions, while vertical funnel layout had 1,200. The results ended up being significant, with vertical funnel layout being 20% better.
  • Analyzing results — : Green: The variant is winning (achieving the desired change) Red: The variant is losing (moving ... the 95% confidence interval (frequentist) or credible interval (Bayesian): If the interval doesn't cross zero, the result is statistically significant
  • How Groove uses A/B testing and surveys to test new pricing models - PostHog — Using PostHog’s A/B testing platform, Groove runs a wide range of tests across its entire product. These include simple visual tweaks, such as swapping the color of a button, or the H1 on a page, through to testing a freemium pricing model vs. a free trial

External links were grounded in one live web search. Search snippets are leads, not independently scraped page content; rejected links remain available in Review evidence.

18

Company, security, and trust

Ownership, policies, security signals, and public trust evidence.

SignalFindingSource
Company and ownershipJames HawkinsCo-foundersource
Contact and supportNot published on the collected pages.—
Legal and privacyIf something stupid happens and you get an unexpected bill (like if your side project unexpectedly goes viral or you're unhappy), we'll pretty much always refund it!source
Security and complianceSSO, audit logs, custom roles, and project permissions for teams that need to manage access as they grow.source
Uptime and status pageNot published on the collected pages.—
Domain registered2020-01-23—
Domain expires2027-01-23—

Not found on the collected pages: contact and support, uptime and status page. This only means Scout did not find it on the pages it read; it says nothing about the company itself.

19

Documentation and product updates

Help resources, product guidance, and visible changes over time.

Resource or updateTypeWhat is availableDate or freshness
PostHog DocsDocumentationThe single platform for engineers to analyze, test, observe, and deploy new features. Product analytics, session replay, feature flags, experiments, CDP, and more. (source)Not dated
PostHog pricing estimates: a guide for AI agents - PostHogGuideGuides, comparisons, pricing breakdowns, use cases, and how-to articles. (source)Not dated
Experiments – Run tests and validate ideas with PostHogProduct updateProduct update is publicly available. (source)Not dated
About PostHogRoadmapPublic product roadmap. (source)Not dated

Not found in the collected public sources: changelog or release notes, status page, separate help center or knowledge base.

Technical

20

Technical and delivery signals

Delivery model, platforms, API, data ownership, reliability claims and release activity.

SignalFindingSource
Delivery model (cloud, self-hosted, desktop, browser extension)PostHog is available as a cloud platform and open-source codebase S1.S1
Platforms and appsWeb app with SDKs for web, mobile, and backend S156.S156
API and extensibility (API, SDK, webhooks, MCP, plugins)Offers SDKs, API for feature flags, and MCP server for AI assistants S156 S73.S156 S73
Data ownership and exportNot published on the collected pages.—
Performance and reliability claimsNot published on the collected pages.—
Release activityNot published on the collected pages.—
21

Measured infrastructure

Domain, certificate, and hosting signals, measured directly.

SignalFinding
Domain registered2020-01-23 — Amazon Registrar, Inc.
Domain expires2027-01-23
First archived2011-01-28 — web archive
TLS certificateLet's Encrypt, valid, expires 2026-12-12
Security headersHSTS
Headers not servedCSP, X-Content-Type-Options, X-Frame-Options, Referrer-Policy
Server headerVercel
Mail handled byaspmx.l.google.com, alt1.aspmx.l.google.com
Nameserversjulissa.ns.cloudflare.com, rory.ns.cloudflare.com

Not measurable: rdap: exceeded the overall budget; wayback: exceeded the overall budget; tls: exceeded the overall budget; dns: exceeded the overall budget; headers: exceeded the overall budget. A gap here means the lookup was unavailable, not that the finding is negative.

22

Technical site audit

A bounded multi-page crawl with page-level issues and URLs.

Scout — Bounded technical crawl

  • Pages crawled: 15 of 15 maximum
  • Technical health: 96/100
  • Critical issues: 0
  • Warnings: 7
  • Notices: 10

Issues

SeverityIssueValueAffected URL
noticeImages are missing alt text4https://posthog.com/
noticeImages are missing alt text1https://posthog.com/pricing
noticeMeta description length should be reviewed179https://posthog.com/context-warehouse
noticeLow visible word count55https://posthog.com/demo
noticeLow visible word count87https://posthog.com/talk-to-a-human
noticeMeta description length should be reviewed17https://posthog.com/about
warningPage should have one primary H10https://posthog.com/changelog
noticeImages are missing alt text19https://posthog.com/careers
warningPage should have one primary H10https://posthog.com/trash
noticeLow visible word count95https://posthog.com/trash
noticeImages are missing alt text16https://posthog.com/docs/cdp/sources
noticeImages are missing alt text2https://posthog.com/product-analytics
warningDuplicate meta description in audit sample3https://posthog.com/docs
warningDuplicate meta description in audit sample3https://posthog.com/handbook
warningDuplicate meta description in audit sample3https://posthog.com/merch
warningDuplicate meta description in audit sample2https://posthog.com/demo
warningDuplicate meta description in audit sample2https://posthog.com/trash

Crawled pages

StatusTitleH1sWordsResponseURL
200PostHog - your product’s context layer1115193 mshttps://posthog.com/
200PostHog pricing – Start free, scale when you need1222244 mshttps://posthog.com/pricing
200PostHog self-driving11032556 mshttps://posthog.com/self-driving
200Context warehouse - PostHog158698505 mshttps://posthog.com/context-warehouse
200PostHog Docs121575 mshttps://posthog.com/docs
200Demo - PostHog155313 mshttps://posthog.com/demo
200Talk to a human – Book a PostHog demo18740 mshttps://posthog.com/talk-to-a-human
200About PostHog1122762 mshttps://posthog.com/about
200Changelog - PostHog01910797 mshttps://posthog.com/changelog
200Handbook - PostHog1197269 mshttps://posthog.com/handbook
200Merch - PostHog1291449 mshttps://posthog.com/merch
200Careers - PostHog1306651 mshttps://posthog.com/careers
200Trash - PostHog095317 mshttps://posthog.com/trash
200Link a source - Docs - PostHog11604775 mshttps://posthog.com/docs/cdp/sources
200Product Analytics – Funnels, retention, and paths \PostHog11394256 ms

This is a bounded Scout crawl. Core Web Vitals and Lighthouse scores are not claimed unless a dedicated performance audit is connected.

23

Search Console and Analytics

First-party search and behavioral data connection state.

Modeled acquisition channels

ChannelEstimated share
direct71.2%
search12.2%
search organic10.7%
search paid1.5%
social4.4%
social organic4.2%
social paid0.3%
referrals6.2%
paid referrals1.3%
mail3.0%
gen ai1.7%
affiliate0.1%
other0.0%

First-party connections

IntegrationStatusData available after connection
Google Search ConsoleNot connectedClicks, impressions, CTR, average position, queries, pages, countries, and devices
Google AnalyticsNot connectedOrganic sessions, engagement, landing pages, conversions, geography, and devices

No first-party Search Console or Analytics numbers are shown until the site owner authorizes the corresponding Google account. Scout traffic model values above are modeled estimates, not private analytics totals.

Limits and method

24

Limitations and open questions

Known constraints and missing evidence from the collected pages.

The collected pages do not mention specific competitors by name. Evidence gaps include lack of detailed security certifications, uptime guarantees, and specific customer testimonials. Open questions remain about data export capabilities and performance benchmarks.

25

Sources, method, and limitations

Evidence inventory, collection method, provider use, and constraints.

This report is based on 15 collected pages from posthog.com, including the About, Docs, Pricing, Experiments, and Founders hub pages. Evidence was gathered via static and browser rendering rendering. External proof search was enabled but only verified the existence of external profiles, not their content. Limitations include potential marketing bias and lack of third-party verification.

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