PostHog vs RudderStack

PostHog provides open-source product analytics and feature flags, but does not offer the extensive warehouse-first data activation and compliance suite.

PostHogProduct analytics, session replay and feature flags

RudderStackCustomer data pipelines for warehouses and tools

Which to pick

Pick PostHog if you want…

Unified product analytics with AI assistance
Open-source product analytics
Integrations with Stripe, GitHub or Google Ads (on PostHog's list, not RudderStack's)

Pick RudderStack if you want…

Warehouse-first CDP with agentic workflows
Integrations with 200+ cloud destinations or 10+ warehouse and data lake destinations (on RudderStack's list, not PostHog's)

Side by side

What it is: PostHog:PostHog is an all-in-one product analytics platform with session replay, error tracking, feature flags and AI-driven insights.; RudderStack:RudderStack is a warehouse-first customer data platform that collects, unifies, governs and activates event data.
Best for: PostHog:Unified product analytics with AI assistance; RudderStack:Warehouse-first CDP with agentic workflows
Who it’s for: PostHog:Product teams and engineers who need analytics, monitoring and automated issue resolution.; RudderStack:Data engineers, analytics teams and product teams building customer data pipelines.
Pricing: PostHog:Freemium; RudderStack:Freemium
Plans: PostHog:Free $0 · Pay-as-you-go $0 per month · Platform packages $0; RudderStack:Free $0 · Growth $265 per month
Open source: PostHog:Yes, 40,071 GitHub stars; RudderStack:Yes, 4,495 GitHub stars
Works with: PostHog:Stripe, GitHub, Google Ads, Postgres, HubSpot, Zendesk, Linear, Slack; RudderStack:200+ cloud destinations, 10+ warehouse and data lake destinations

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.

RudderStack features

Event Collection. Capture clean, standardized events from web, mobile and server sources via 16+ SDKs.
Data Unification. Resolve identifiers and build a customer 360 profile without writing SQL.
Real-time Activation. Stream data to 200+ destinations and activate audiences via natural-language chat.
Governance & Compliance. Schema validation, consent management, PII masking and alerting to ensure data quality.
Transformations. JavaScript and Python transformations with limits per plan, plus unlimited libraries.
Agentic Interfaces. AI-powered chat and CLI tools let users query and manage data pipelines safely.
Profiles & Data Apps. Identity resolution, feature builder, audience builder and activation APIs for downstream use.
Security & Management. SSO, HIPAA support, VPC deployment options and unlimited team members on paid plans.

PostHog vs RudderStack FAQ

Is PostHog or RudderStack free?+

PostHog has a free plan and paid plans. RudderStack has a free plan; paid plans start at $265/month (Growth).

Is PostHog or RudderStack open source?+

Yes, both are open source: PostHog (PostHog/posthog on GitHub) and RudderStack (rudderlabs/rudder-server on GitHub).

Do PostHog and RudderStack integrate with the same tools?+

Their integration lists don't overlap: PostHog lists Stripe, GitHub, Google Ads, Postgres and 4 more; RudderStack lists 200+ cloud destinations and 10+ warehouse and data lake destinations.

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