GrowthBook vs PostHog
Both are in A/B testing. Here is how their plans, prices and features compare, taken from each vendor's own site.
The main differences
- Fees: GrowthBook Per seat per month, Custom pricing; contact sales; PostHog Same free tier each month, then pay for usage.
| GrowthBook | PostHog | |
|---|---|---|
| Starting price | Free plan · from $40/mo | Free plan |
| Free plan | Yes | Yes |
| Free trial | Not stated by the vendor | Not stated by the vendor |
| Plans | Starter ($0); Pro ($40/mo); Enterprise () | Free ($0); Pay-as-you-go () |
| Fees | Per seat per month; Custom pricing; contact sales | Same free tier each month, then pay for usage |
| Best for | Not stated | Not stated |
| Key features | Unlimited experiments (A/B tests) and feature flags; Bring your own warehouse or a managed warehouse; Bayesian and frequentist statistics; AI Visual Editor and split URL tests (Pro) | Product and web analytics, 1M events a month free; Session replay, 5,000 recordings a month free; Feature flags (1M requests free) and experiments; Surveys and error tracking |
| Checked on | 2026-10-03 | 2026-10-03 |
Prices change; confirm on the vendor's site before you buy. Full details and sources are on each tool's page.
GrowthBook
- Free plan with unlimited experiments, flags and traffic
- No credit card required to start
- Self-hosting is an option
Trade-offs
- Free is limited to 3 users and 1 project
- Pro is $40 per seat a month, so cost grows with the team
- SSO, approval workflows and uptime SLAs need Enterprise
PostHog
- Free tier with no credit card that renews monthly, not a trial
- Usage stops at the free limits, so no surprise bills
- Unlimited team members
Trade-offs
- The free plan has 1 project and 1-year data retention
- Pay-as-you-go has no flat price, so cost depends on usage across products
- Platform packages (SSO, audit logs, custom roles) are sold separately