GrowthBook Alternatives: Best GrowthBook Competitors, GrowthBook Pricing and Open Source A/B Testing Compared

GrowthBook alternatives at a glance

Short answer: almost nobody leaves GrowthBook over the price. The cloud Starter plan is free for up to three users with unlimited experiments and unlimited traffic, Pro is a flat $40 per seat per month, and the self-hosted edition costs nothing in license fees. GrowthBook is also the only vendor in this category that bills you for headcount instead of audience, so a viral month never moves the invoice. The real reasons to look elsewhere are narrower: it assumes an engineer and a data warehouse, its outage support target on Pro is one business day, custom single sign-on and SCIM sit behind a sales quote, and it measures which variation won without telling you what to try. Every figure on this page was read at GrowthBook's own pricing page and public repository on 2 September 2026.

What GrowthBook costs in 2026

GrowthBook publishes a complete rate card, which already puts it ahead of Optimizely, Adobe Target, AB Tasty and Contentsquare, none of which show a self-serve buyer a number. There are two deployment tracks, cloud and self-hosted, each with a free tier and a paid tier.

The self-hosted track is simpler. The open source edition is free with one project and unlimited feature flags, experiments and traffic, and self-hosted Enterprise is a custom quote that unlocks the same governance features as cloud Enterprise plus multi-tenant mode, custom validation hooks and HIPAA with a BAA available.

Two things are absent that are worth naming, because their absence is unusual. There is no monthly and annual billing toggle anywhere on the pricing page, and no published discount for paying up front. Crazy Egg, by contrast, is annual-only at every tier, so its advertised $29 is really a $348 commitment. GrowthBook's $40 is just $40. We also checked the page's structured data for Offer blocks retaining plans the visible page had dropped, the trick that surfaced Unbounce's withdrawn $29 Starter plan, and found none.

GrowthBook is the only tool here that bills your org chart, not your traffic

This is the single most important thing to understand before comparing GrowthBook to anything else, and it is the reason a like-for-like price comparison usually misleads. Every other vendor in this category meters some measure of your audience. GrowthBook meters your team.

The practical effect is a clean split. If you have a small team and a large audience, GrowthBook is dramatically cheaper than anything else on that list, and the gap widens every month your traffic grows. Four people running experiments across a site with fifty million monthly visitors pay $160 a month. There is no plan on this page from any other vendor that serves that traffic at that price.

If you have a large team and a modest audience, the arithmetic inverts and GrowthBook becomes one of the more expensive options. A fifty-person product organization on Pro pays $2,000 a month, which is the same as PostHog's Enterprise platform package, and it pays that whether the site sees ten thousand visitors or ten million. Seat-based pricing also creates a quiet incentive that traffic-based pricing does not: it makes you ration who gets an account, which is the opposite of what a company trying to build an experimentation culture wants.

So the right question is not which tool is cheaper. It is which number in your business is growing faster, your traffic or your headcount, because that is the number you have agreed to be billed on.

Is GrowthBook cheaper than the alternatives? A worked comparison

Take a mid-size ecommerce team: eight people who need access, roughly two million monthly page views, and a want to run four or five experiments at a time.

GrowthBook lands mid-table at that shape, and wins outright as traffic climbs. Add twenty more people, though, and it is the most expensive line in the table.

Is GrowthBook open source? Yes, with an asterisk worth reading

GrowthBook is source-available rather than fully open source, and most published comparisons, including an earlier version of our own page, get this wrong by calling it MIT-licensed and stopping there. The repository's own LICENSE file states that content is available under the MIT Expat license except for three directories, which carry a separate proprietary GrowthBook Enterprise License:

This matters more than a licensing footnote usually does, because of which code sits in those directories. The enterprise paths hold the governance features a regulated or larger company most wants when it decides to self-host in the first place: custom roles, SCIM provisioning, team permissioning, approval workflows. So the features that push a company toward running the software on its own infrastructure are precisely the features that are not covered by the open license. GitHub reflects this, reporting the repository's license as NOASSERTION rather than MIT.

None of that makes GrowthBook a bad deal. The MIT core is real, substantial and genuinely free to run, the project is actively developed with more than 8,000 GitHub stars and commits landing daily, and being clear about a mixed license is more honest than the vendors that publish no license terms at all. But if your reason for choosing GrowthBook is a formal open source policy, check the policy against the three directories before you commit.

Self-hosted free is not a bigger version of cloud free

Most people assume the self-hosted open source edition is a superset of the free cloud plan, since you are running the whole thing yourself. It is not. Each free tier has things the other lacks, and the differences catch teams out after they have already migrated.

The two that surprise people are single sign-on and streaming updates. A three-person startup on free cloud can log in with Google; the same team self-hosting has no SSO at all until it buys Enterprise. And real-time flag propagation, which is exactly what you want from a kill switch, ships on every cloud tier including the free one but is an Enterprise feature when you self-host. Self-hosting GrowthBook buys you data residency and unlimited seats. It costs you features the free cloud plan hands over without asking.

What stops improving as you pay more

We run this test on every pricing ladder, because vendors advertise what scales and stay quiet about what does not. GrowthBook has one clear plateau and one clear step.

Projects stop at three. Starter gets one project, Pro gets three, and that is it until Enterprise. Because Pro is priced per seat, a two-person team paying $80 a month and a fifty-person team paying $2,000 a month get the identical three projects. Spending twenty-five times more buys no additional project separation whatsoever, which is a real constraint for an agency or a company with several distinct products.

Support response is the other one. Free gets community support only. Pro adds email and live in-app support with a first response target for an outage of one business day. Enterprise cuts that to one hour, with two hours for a degraded service, and adds the 99.99% uptime SLA.

The one business day figure deserves a moment, because of what this product does. GrowthBook controls feature flags, including the instant kill switch you would reach for when a release is actively breaking production. On Pro, a Friday afternoon outage of the system that turns bad features off has a contractual first response target of the next business day. That is not unusual for a $40 seat, and community Slack in practice moves faster than the SLA promises. But if flags gate anything revenue-critical, the SLA is a genuine reason to price Enterprise, and it is not a line anyone puts on a comparison chart.

What you actually get on the free plan

The free tier is unusually complete, and it is worth being specific because this is where GrowthBook breaks the pattern we have documented across this category. Our standing finding across eight vendor pricing pages is that nothing in this market will split-test a page at the entry price: Crazy Egg gates A/B testing behind its $99 Plus tier, and most enterprise vendors will not quote at all.

GrowthBook is the exception. The free cloud plan includes unlimited experiments, unlimited feature flags and unlimited traffic, plus Bayesian and frequentist engines, sample ratio mismatch detection, multiple testing corrections, shareable reports, 24 or more SDKs, a REST API, webhooks, an MCP server and the Slack integration. That is a real experimentation platform at zero cost.

The catch is not a meter, it is a prerequisite. Free has no visual editor and no split URL tests, both of which start on Pro. So you can run unlimited free experiments only if you have a developer to define variations in code and a warehouse holding clean event data. The claim that survives is narrower than the one most roundups make: nothing in this category will let a marketer split-test a headline without engineering help at the entry price. GrowthBook will let an engineering team do it for nothing.

The best GrowthBook alternatives, by the job you need done

There is no single replacement, because people arrive at this page for four different reasons.

Where GrowthBook genuinely wins, and we would not switch

Being straight about this is the point of the page. If you have engineers, a warehouse and growing traffic, GrowthBook is very hard to beat and we would tell you to keep it. Unlimited traffic on a free tier is a structural advantage no session-metered or visitor-metered rival can match at any price. Warehouse-native architecture means your experiment data stays in BigQuery, Snowflake, Redshift or ClickHouse rather than being copied into a vendor's system, which removes both a data-governance argument and a duplication cost. Publishing a full rate card and a genuinely usable free tier puts it on the honest side of a category where four of the largest vendors will not show you a number. And the customer list, which includes Dropbox, Khan Academy and Upstart, is not a company that struggles at scale.

The gap GrowthBook leaves is the same gap every experimentation platform leaves, and it is not a flaw in the product: it tells you which variation won and stays silent on what to try next. Splitting traffic is only useful once you have a challenger worth testing, and producing that challenger is a separate job.

Where Converto fits

Converto is the complement rather than the competitor, and it is worth being precise about the division of labor. Paste any live URL and Converto audits the copy, layout, CTAs, page speed and AI-readability, ranks the leaks by likely impact, and generates ready-to-ship variants. There is no SDK, no warehouse, no hosting and no traffic threshold, and it is $19 a month self serve. That matters most for the audience GrowthBook cannot serve: a marketer who needs a better page this week, or a site without the tens of thousands of visitors per variation a valid test requires.

Teams already running GrowthBook commonly use both, in sequence. Converto writes the challenger, GrowthBook proves whether it won. Suggestions are data-informed, not guarantees.