GrowthBook vs PostHog (2026): which should you pick?
As of Nov 13, 2026, we pick PostHog: it is second in our ranking of website and product analytics tools, and it grades higher too, 3.2 against 2.8.
Checked Oct 18, 2026 and Nov 13, 2026 · graded Oct 18, 2026 and Nov 13, 2026 by ToolGPA
PostHog grades higher on value for money and features. They get the same grade on the free plan, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
GrowthBook
Open-source feature flags and A/B testing on your own warehouse
PostHog
Open-source product analytics with replays, flags and surveys
Which one is for you
Pick GrowthBook if
- Fits if your data is in a warehouse and you can write SQL metrics
- Works for teams of three that want free flags and experiments
Look elsewhere if
- Tight if you're past 3 users or 1 project, which means Pro
- Pricey if you're a bigger team, at $40 a seat and capped at 30 users and 3 projects
- Watch out: events past 1M or 2M cost $30 per million on the managed warehouse
- Watch out: SSO is Google only until Enterprise, and CDN use past 2M requests costs extra
- Not for you if you have no warehouse or SQL skills
Pick PostHog if
- Fits if you're a startup that wants analytics, replays and flags within the free allowance
- Works for developers who want to go from a broken session to the error behind it
Look elsewhere if
- Skip it if you just want simple visitor counts without learning a whole toolkit
- Pricey if you need SSO or a HIPAA BAA, which take Boost at $250 a month on top of usage; SAML takes Scale at $750
- Not for you if you want a fixed monthly bill, as everything past the free allowance is metered
- Tight if you stay free, with 1 project, recordings kept a month and events dropped past the limits
- Watch out: self-hosted PostHog is officially unsupported, with no tagged releases or paid support
How we grade them
| 2.8GPAGrowthBookGood | 3.2GPAPostHogVery good | |
|---|---|---|
| Value for money | BStarter is free with unlimited flags, experiments and traffic, but Pro is $40 a seat, which is where the dearer quarter starts. | AA site with 10,000 visitors a month fits in the free 1M events and 5,000 recordings, so the figure is $0. There's no base fee after that, just usage from $0.00005 an event. Boost, at $250 a month, is only for SSO, HIPAA and more projects. |
| Free plan and trial | BFree Starter: 3 users, 1 project and unlimited traffic. One small team can live on it. | BNo card and no time limit: 1M events, 5,000 recordings, 1M flag requests and 1,500 survey responses every month, with unlimited members. Usage stops at the limit, so no surprise bill. You get 1 project, and recordings are kept a month. |
| Features | BExperiments, flags, warehouse metrics, product analytics, SDKs and an API. Nothing core is missing. | AAnalytics, web analytics, replays, flags, A/B tests, surveys, error tracking, logs and a data warehouse with pipelines in and out. Graded against Amplitude, Mixpanel and Heap, it covers the whole job, and none of them bundles errors, logs and a warehouse too. |
| Ease of use | CNo rating read. A warehouse, SQL metrics and SDKs to set up first. | CNo rating on record. The cloud version is a snippet and a sign-up, but there are a lot of products to learn and events to plan. The free self-hosted version is a Docker deploy PostHog doesn't officially support, which is a developer's job. |
| Platforms and integrations | BWeb with SDKs and an API, Slack and dbt links, and a self-host option. | BWeb only, so it can't reach an A. It pulls data in from Stripe, HubSpot, Salesforce and Postgres, sends events out to Braze, Klaviyo and others, and works with Snowflake, BigQuery and Zendesk. |
| Best for | warehouse-based A/B tests and flags | a whole product toolkit on one free allowance |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: GrowthBook and PostHog. How we grade
Where they differ
- GrowthBook also covers dashboards.
- PostHog also covers surveys, web analytics and session replay.
At a glance
| GrowthBook | PostHog | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $40 per seat / month | $0.00005 per analytics event past the free 1M (pay-as-you-go) |
| Free plan | Starter plan: up to 3 users, 1 project, unlimited feature flags, experiments and traffic, bring your own warehouse or use the managed one. | Monthly allowance that resets: 1M analytics events, 5,000 recordings, 1M flag requests, 1,500 survey responses, 100K exceptions. Unlimited members, 1 project, 1-year retention. |
| Free trial | None listed | None listed |
| Web | ||
| Made by | GrowthBook | PostHog |
| Price read from | growthbook.io | posthog.com |
| Checked | Nov 13, 2026 | Oct 18, 2026 |
Worth knowing
GrowthBook
- The free Starter plan allows only 3 users and 1 project; Pro caps at 30 users and 3 projects.
- The managed warehouse includes 1M events a month on Starter and 2M on Pro, then $30 per million.
- CDN use beyond 2M requests a month on Pro costs $10 per million, and bandwidth beyond 20GB costs $1 per GB.
- SSO is Google only on Starter and Pro; custom OIDC and SCIM need Enterprise.
PostHog
- Usage is metered per product, so the monthly bill moves with traffic; billing limits can be set for each product to cap it.
- SSO enforcement, a HIPAA BAA and unlimited projects need the $250-a-month Boost package on top of usage; SAML sign-in needs Scale at $750.
- The free plan keeps recordings for 1 month and data for 1 year, allows 1 project, and drops events past its limits.
- Self-hosted PostHog is officially unsupported and has no tagged releases; PostHog recommends always running the latest image.
Key features
GrowthBook
- Experimentation
- Unlimited A/B tests with Bayesian and frequentist statistics; Pro adds multi-arm bandits and a power calculator.
- Feature flags
- Unlimited flags with percentage rollouts and targeting; Pro adds safe rollouts with automatic rollback, and Enterprise adds ramp schedules.
- Warehouse-native metrics
- Metrics are defined in SQL on the customer's own data warehouse, with an optional managed warehouse so no connection is needed.
- Product analytics
- A metric explorer and fact table explorer on every plan, with funnel builder, user journeys and custom dashboards on higher tiers.
- SDKs and API
- 24+ SDKs, a REST API, webhooks and an MCP server, with local evaluation so flag checks do not call out to GrowthBook.
- Self-hosting
- The pricing page has a Self-Hosted tab, and the homepage describes the platform as open source with a self-hosted option.
PostHog
- Product and web analytics
- Funnels, trends, retention, user paths and a web analytics dashboard, built from events. The first 1M events a month are free.
- Session replay
- Recordings of real visits to see where people get stuck, linked to funnels and errors. 5,000 recordings a month are free; recordings are kept 90 days on pay-as-you-go.
- Feature flags and experiments
- Roll features out to chosen users and run A/B tests, billed together by flag requests, with 1M requests free each month.
- Surveys
- In-app surveys with 1,500 free responses a month, and white-labeled surveys on the Boost package.
- Error tracking and logs
- Captures exceptions (100K free a month) and ingests logs (10 GB free), so you can go from a replay to the error behind it.
- Data warehouse and pipelines
- Syncs data in from Stripe, HubSpot, Salesforce, Postgres and others, and sends events out to tools such as Braze and Klaviyo.
Plans
GrowthBook
Starter$0
Up to 3 users and 1 project. Unlimited flags, experiments and traffic, with community support. Managed warehouse includes 1M events a month.
Pro$40
per seat / month, billing period not shown
Up to 30 users and 3 projects. Adds AI visual editor, multi-arm bandits, safe rollouts, custom dashboards and premium support.
EnterpriseCustom
Custom environments, approval workflows, SSO and SCIM, exportable audit logs, 99.99% uptime SLAs and dedicated support.
PostHog
Free$0
Full free allowance on every product, unlimited team members, 1 project, community support. Usage stops at the limits, so no surprise bill.
Pay-as-you-go$0
plus usage above the monthly free allowance
No base fee. Analytics from $0.00005 an event and replays from $0.005 a recording, cheaper at volume. 6 projects, 7-year data, email support.
Boost$250
per month, plus usage
Platform package: unlimited projects, SSO enforcement, 2FA enforcement, white labeling, HIPAA BAA and 12 months of replay retention.
Scale$750
per month, plus usage
Everything in Boost plus SAML and OIDC sign-in, approval workflows, real-time alerts and priority support with an 8-hour target.
EnterpriseCustom
Sold through sales: role-based access, a dedicated account manager, training, and up to 5 years of replay retention.
Self-hosted (hobby deploy)$0
MIT-licensed Docker Compose deployment you host yourself. Officially unsupported, with no paid support plan.
Ways to pay less
GrowthBook
No public discounts listed.
PostHog
- Startups
$50,000 in credits for early-stage startups
Companies under 2 years old that have raised less than $5M get $50,000 of PostHog credit for 12 months, plus partner perks. A company email domain is required.
- Nonprofit
Discount for nonprofits
PostHog says it gives nonprofits a discount in most cases: create an account, then contact sales with details of the organization.
Common questions
Which is cheaper, GrowthBook or PostHog?
As of Nov 13, 2026, GrowthBook starts at $40 per seat / month, and PostHog starts at $0.00005 per analytics event past the free 1M (pay-as-you-go).
Which has a free plan, GrowthBook or PostHog?
As of Nov 13, 2026, both GrowthBook and PostHog have a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.