GrowthBook vs PostHog

PostHog provides product analytics and feature flags but is not warehouse-native and lacks advanced statistical experiment methods.

GrowthBookOpen-source feature flags and A/B testing

PostHogProduct analytics, session replay and feature flags

Which to pick

Pick GrowthBook if you want…

Warehouse-native feature flags & experiments
Integrations with JavaScript, React or Vue (on GrowthBook's list, not PostHog's)

Pick PostHog if you want…

Unified product analytics with AI assistance
Product analytics with basic flags
Integrations with Stripe, GitHub or Google Ads (on PostHog's list, not GrowthBook's)

Side by side

What it is: GrowthBook:GrowthBook is an open-source, warehouse-native platform for feature flags, A/B testing and product analytics.; PostHog:PostHog is an all-in-one product analytics platform with session replay, error tracking, feature flags and AI-driven insights.
Best for: GrowthBook:Warehouse-native feature flags & experiments; PostHog:Unified product analytics with AI assistance
Who it’s for: GrowthBook:Product, engineering and data teams that need experimentation and flag management.; PostHog:Product teams and engineers who need analytics, monitoring and automated issue resolution.
Pricing: GrowthBook:Freemium; PostHog:Freemium
Plans: GrowthBook:Starter Free · Pro $40 per seat per month; PostHog:Free $0 · Pay-as-you-go $0 per month · Platform packages $0
Open source: GrowthBook:Yes, 8,481 GitHub stars; PostHog:Yes, 40,071 GitHub stars
Works with: GrowthBook:JavaScript, React, Vue, Node.js, Python, Java, Kotlin, Swift; PostHog:Stripe, GitHub, Google Ads, Postgres, HubSpot, Zendesk, Linear, Slack

GrowthBook features

Unlimited feature flags. Create and manage unlimited flags with low-latency evaluation.
Unlimited experiments. Run unlimited A/B tests directly on your data warehouse.
AI Visual Editor. Design experiments with a visual interface powered by AI.
Multi-arm & contextual bandits. Optimize experiments using advanced statistical methods.
Safe rollouts & auto-rollback. Schedule releases with guardrails and automatic rollback on failures.
24+ lightweight SDKs. Integrate with JavaScript, Python, React, iOS, Android, Go, Rust and more.
REST API & webhooks. Full API access and unlimited webhooks for custom workflows.
Product analytics. Explore metrics, funnels and user journeys directly from your warehouse.

PostHog features

Product Analytics. Capture, store and query events with a free tier of 1 M events per month.
Session Replay. Record user sessions (5 K free recordings) and surface dead clicks or crashes.
Error Tracking. Collect exceptions and stack traces, grouped into actionable issues.
Feature Flags & Experiments. Toggle features and run A/B tests with 1 M free flag requests per month.
AI Observability. Ask natural-language questions; AI generates diagnostics and pull-request suggestions.
Managed Data Warehouse. Store raw events, rows and logs; query via SQL or BI tools.
Workflows & Inbox. Automated agents create PRs, prioritize findings and route tickets to GitHub, Zendesk, etc.
Integrations. Ingest data from 120+ sources like Stripe, Postgres, HubSpot, Google Ads and more.

GrowthBook vs PostHog FAQ

Is GrowthBook or PostHog free?+

GrowthBook has a free plan (Starter); paid plans start at $40/month per user (Pro). PostHog has a free plan and paid plans.

Is GrowthBook or PostHog open source?+

Yes, both are open source: GrowthBook (growthbook/growthbook on GitHub) and PostHog (PostHog/posthog on GitHub).

Do GrowthBook and PostHog integrate with the same tools?+

Their integration lists don't overlap: GrowthBook lists JavaScript, React, Vue, Node.js and 6 more; PostHog lists Stripe, GitHub, Google Ads, Postgres and 4 more.

On DevHunt

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