Amplitude vs PostHog(2026)
Amplitude is better for teams that need industry standard for product analytics. PostHog is the stronger choice if open source. Amplitude is freemium (from $49/month) and PostHog is freemium (from $0 (usage-based after 1M events)).
Full feature breakdown, pricing details, and pros & cons below.
By Bikram NathLast updated
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Amplitude
Amplitude is a product analytics platform used by growth teams to understand user behavior through funnels, retention, and pathfinding.
Starting at $49/month
Visit AmplitudePostHog
PostHog is an open-source product analytics suite with funnels, feature flags, A/B testing, and session recording.
Starting at $0 (usage-based after 1M events)
Visit PostHogHow Do Amplitude and PostHog Compare on Features?
| Feature | Amplitude | PostHog |
|---|---|---|
| Pricing model | freemium | freemium |
| Starting price | $49/month | $0 (usage-based after 1M events) |
| Funnels | ✓ | — |
| Retention analysis | ✓ | — |
| Pathfinding | ✓ | — |
| Cohorts | ✓ | — |
| A/B testing | ✓ | ✓ |
| Session replay | ✓ | — |
| Predictions | ✓ | — |
| Product analytics | — | ✓ |
| Session recording | — | ✓ |
| Feature flags | — | ✓ |
| Surveys | — | ✓ |
| Data warehouse | — | ✓ |
Amplitude Pros and Cons vs PostHog
Amplitude
PostHog
Deep dive: PostHog
When to choose PostHog
PostHog is the right pick when the team wants product analytics, session replay, feature flags, and A/B testing in a single platform rather than stitching together Mixpanel plus LaunchDarkly plus FullStory. The self-hosted option makes it the default for teams with data residency requirements or those who want to avoid sending user behavior data to a third-party cloud. The generous free tier of 1 million events per month and 5,000 session recordings covers most early-stage products without any cost. Choose PostHog when the team values open-source transparency, when the project needs to correlate feature flag exposure with conversion metrics in the same dashboard, or when the engineering team wants to extend analytics with custom plugins. Avoid it when the team needs enterprise-grade support with SLAs, when the marketing team expects a polished non-technical UI comparable to Amplitude, or when the project only needs basic page-view analytics that Plausible handles more simply.
Real-world use case
A B2B SaaS startup with 3,000 monthly active users uses PostHog Cloud to track product adoption. The team set up feature flags for a new pricing page redesign and uses the built-in experimentation framework to A/B test conversion rates. Session replay helps the product team watch users struggle with the onboarding flow without installing a separate tool. The total cost is /bin/zsh per month on the free tier. The tradeoff is that PostHog query performance degrades on complex funnels with more than 5 steps over 90-day windows, and the self-serve documentation for HogQL custom queries assumes SQL proficiency that the product manager lacks.
Hidden gotchas
The autocapture feature records every click, input change, and page view by default, which generates high event volumes that can push past the free tier within days on high-traffic sites. Teams that enable autocapture without configuring event filtering often discover a surprise bill at the end of the month. Session replay does not capture iframe content or canvas elements, which means product tours built with third-party onboarding tools are invisible in replays. The self-hosted deployment on Kubernetes requires significant infrastructure knowledge and at minimum 8 GB RAM for the ClickHouse instance. Feature flag evaluation adds a network request per page load unless the team configures local evaluation with bootstrapped flags, which requires server-side rendering changes. Group analytics for B2B use cases (tracking organizations rather than individual users) requires a separate billing add-on that is not included in the free tier.
Pricing breakdown
The free tier includes 1M events, 5K session recordings, and 1M feature flag requests per month. Beyond that, events cost /bin/zsh.00031 each (roughly per 1M events), session recordings cost /bin/zsh.005 each, and feature flag requests cost /bin/zsh.0001 each. A typical B2B SaaS with 10,000 MAU generating 5M events, 10K recordings, and 2M flag requests per month runs approximately ,600 to ,000 per month. The self-hosted option eliminates per-event pricing but shifts infrastructure costs to the team.
Should You Use Amplitude or PostHog?
For most teams, Amplitude is the better default: it offers industry standard for product analytics and is freemium (from $49/month). Choose PostHog instead if open source matters more than steep learning curve. There is no universal winner — the right pick depends on your budget, team size, and whether you value industry standard for product analytics or open source more.
Choose Amplitude if…
- •Industry standard for product analytics
- •Powerful retention analysis
- •Behavioral cohorts
Choose PostHog if…
- •Open source
- •All-in-one product suite
- •Generous free tier