GrowthBook vs PostHog
GrowthBook
Open-source, warehouse-native feature flagging and experimentation that computes results from event data already in your warehouse.
Full directory entry →PostHog
Open-source platform bundling product analytics, session replay, feature flags, experiments, and surveys on a single ClickHouse-backed event store.
Full directory entry →Facts, side by side
| GrowthBook | PostHog | |
|---|---|---|
| Pricing model | freemium · from $40 | freemium |
| Pricing notes | Self-hosting is free under the MIT license with unlimited users. Cloud Starter is free for up to 3 users with unlimited flags and experiments; Pro is $40/seat/month (up to 50 users) and adds the visual editor, multi-armed bandits, and safe rollouts; Enterprise (cloud or self-hosted) is quoted. Cloud plans meter CDN usage (1M requests/month on Starter, 2M on Pro with overage pricing). | Usage-based per product with monthly free allowances on Cloud (1M analytics events, 5K replays, 1M flag requests, 1.5K survey responses); per-unit rates fall with volume and anonymous events are billed cheaper than identified ones. The open-source Docker deploy is free. |
| Open source | Yes | Yes |
| Self-hostable | Yes — MIT-licensed; runs from a Docker image against your own database, connected to your warehouse. | Partial — A Docker Compose hobby deploy is supported at small scale; large self-hosted instances are no longer sold or supported as a paid product. |
| Categories | Experimentation | Product analytics, Session replay, Experimentation |
| Who it's for | data engineers, implementation engineers, measurement managers | implementation engineers, data engineers, measurement managers |
| Integrations listed | 11 | 5 |
Directory entries last updated: GrowthBook 2026-07-18 · PostHog 2026-07-18.
In brief
GrowthBook — Open-source, warehouse-native feature flagging and experimentation that computes results from event data already in your warehouse. Pricing: freemium · from $40. Self-hosting is free under the MIT license with unlimited users. Cloud Starter is free for up to 3 users with unlimited flags and experiments; Pro is $40/seat/month (up to 50 users) and adds the visual editor, multi-armed bandits, and safe rollouts; Enterprise (cloud or self-hosted) is quoted. Cloud plans meter CDN usage (1M requests/month on Starter, 2M on Pro with overage pricing). Self-hosting: Yes — MIT-licensed; runs from a Docker image against your own database, connected to your warehouse.. Listed integrations: bigquery, snowflake, clickhouse, databricks, redshift, postgres, athena, mixpanel, segment, rudderstack, google-analytics-4.
PostHog — Open-source platform bundling product analytics, session replay, feature flags, experiments, and surveys on a single ClickHouse-backed event store. Pricing: freemium. Usage-based per product with monthly free allowances on Cloud (1M analytics events, 5K replays, 1M flag requests, 1.5K survey responses); per-unit rates fall with volume and anonymous events are billed cheaper than identified ones. The open-source Docker deploy is free. Self-hosting: Partial — A Docker Compose hobby deploy is supported at small scale; large self-hosted instances are no longer sold or supported as a paid product.. Listed integrations: segment, rudderstack, bigquery, snowflake, hightouch.
Which one, when
Derived mechanically from the structured facts above — deltas only, not an editorial verdict. Where the facts tie, read both entries.
- you need full self-hosting — PostHog is only partially self-hostable
- you also need Product analytics, Session replay — not a listed category for GrowthBook
Also compare
GROWTHBOOK VS: Optimizely · Statsig · VWO
POSTHOG VS: Amplitude · Fullstory · Heap · Hotjar · LogRocket · Microsoft Clarity · Mixpanel · Optimizely · RudderStack · Segment · Snowplow · Statsig · VWO