Amplitude vs PostHog
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
AI tool · Freemium
Product analytics for tracking user behaviour, funnels and retention, with AI agents and experiments.
AI tool · Freemium
An open-source product platform with analytics, session replay, feature flags, experiments and LLM observability.
The short answer
Choose Amplitude if you need…
- Product teams analysing funnels
- Retention analysis
Choose PostHog if you need…
- Engineering-led product teams
- All-in-one product tooling
Side-by-side
| Amplitude | PostHog | |
|---|---|---|
| Type | Data & analytics · Product analytics | Data & analytics · Product analytics |
| Price | Freemium | Freemium |
| Platforms | Web, API | Web, Self-hosted, API |
| Works with | Segment, Snowflake, Slack | Slack, GitHub, Stripe |
| Hands-on tested by us | Not yet | Not yet |
| Last checked | 2026-10-29 | 2026-10-29 |
What each one is
Amplitude
Product analytics for tracking user behaviour, funnels and retention, with AI agents and experiments. Deep behavioural insight. Needs disciplined event tracking to be trustworthy.
PostHog
An open-source product platform with analytics, session replay, feature flags, experiments and LLM observability. Huge feature set with a generous free tier. The breadth can feel unfocused.
Best for
Amplitude
- Product teams analysing funnels
- Retention analysis
PostHog
- Engineering-led product teams
- All-in-one product tooling
Strengths
Amplitude
- Event analytics
- Funnels and cohorts
- Experimentation
- Session replay
PostHog
- Product analytics
- Session replay
- Feature flags and experiments
- AI assistant
Frequently asked questions
What is the difference between Amplitude and PostHog?
Amplitude: Product analytics for tracking user behaviour, funnels and retention, with AI agents and experiments. PostHog: An open-source product platform with analytics, session replay, feature flags, experiments and LLM observability. Amplitude suits product teams analysing funnels, while PostHog suits engineering-led product teams.
Are Amplitude and PostHog free?
Amplitude: Freemium. PostHog: Freemium.
What are other alternatives to Amplitude and PostHog?
Other options people compare them with include Mixpanel, ThoughtSpot.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.