Head-to-head · 1 October 2026· free to read, no signup
GrowthBook vs LaunchDarkly for flags and experiments
This comparison is almost always framed as open-source-and-cheap against enterprise-and-expensive. The published rate cards say something more interesting: the two vendors meter completely different things, and which one is cheaper depends entirely on the shape of your product.
~5 min read · 2 tools · 1 adopt, 1 pilot · reviewed 2026-10-01 · no sponsorships, no affiliate links
The verdict, up front
LaunchDarkly if you want the whole product org watching flags — seats are free. GrowthBook if your warehouse must hold the data.
Run the arithmetic on your own two numbers before you read either feature list, because these vendors bill for different things and that is the whole decision. LaunchDarkly charges nothing per seat — unlimited users on every plan — and meters service connections at $10 a month each billed yearly plus client-side MAU at $8.33 per thousand a month. GrowthBook charges $40 per seat per month on Pro, which 20 people makes $9,600 a year, and includes a bring-your-own-warehouse model where your event data can stay in your own Snowflake or BigQuery. So for a B2B product with tens of thousands of business users and a product org that all wants flag visibility, LaunchDarkly is frequently the cheaper of the two and the arithmetic surprises people; for a consumer or freemium product with millions of client-side users, that MAU meter can become the largest single line in your tooling estate. GrowthBook's real case is not price at all — it is the data posture, which is the strongest on these pages, plus the fact that flags, experiments and analytics run off one metric definition, which kills the meeting where your dashboard and your experiment readout disagree about what 'activated' means. Both put the governance features a growing org eventually wants — SSO, SCIM, approvals, custom roles — behind a custom quote, so price the tier you will be on in year two, not the one you start on.
The verdict table
Adopt, pilot or skip — and what each one does to your SSO and your data.
One row per tool, free, no email and no card. The verdict is for a 20-person product orgat a B2B SaaS company specifically — not in general, and not on a benchmark. Where we have not written a brief for a tool yet, the row says so rather than guessing.
Adopt it outright if GrowthBook already runs your flags and experiments; as a standalone analytics migration the seat price is high for what a 20-person org gets.
SSO and SCIM provisioning, exportable audit logs and advanced access control are all Enterprise-only (custom pricing). No public SOC 2 report on the pricing page we read — ask for it. The genuinely different thing here is where the data sits: bring-your-own-warehouse means your event data can stay in your own Snowflake or BigQuery and GrowthBook queries it, which is the strongest data-residency story of any tool on these pages. Take the managed warehouse option and you give that up.
Seats are free and the meters are published, so a 20-person product org can price it exactly — and the flag estate is the thing you least want to migrate twice.
Advanced controls — custom roles, approvals, scheduled changes, large-scale targeting — are Enterprise-only at custom pricing, so governance is the upgrade trigger rather than scale. Flag configuration, targeting rules and the evaluation context you send (which is usually user or account identifiers) sit in LaunchDarkly's cloud; AgentControl run and eval data is retained 14 days on Developer and 30 on Foundation. Our full seat-band pricing of this one is published free at /verdicts/launchdarkly.
What each one costs a 20-person product org, and the pitch
Subscribers also get · on every tool above
Real price for a 20-person product org
Per tool: the plan a seat, SSO or retention minimum really forces you onto, and the annual dollar figure that comes with it — not the headline tier on the pricing page.
Paste this into #product
Per tool: three lines you can paste into #product without rewriting them — what it would do here, the before/after, and the smallest pilot worth asking for.
The verdicts and the data-risk lines above are free and stay free. The prices and the pitches arrive in every issue of the no-card trial — 7 weekday issues, each with the Adoption Brief on all five tools, for an email address and no card. (A card plan, $10/month or $96/year, also unlocks them right here on the page.) Start the trial below — or read one complete Adoption Brief on five tools, free, in our published sample issue.
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2 calls here. Five new tools, decided, every weekday.
The five tools are published free every weekday morning. Subscribers also get the Adoption Brief on each one: adopt / pilot / skip, the price a 20-person product org really lands on, the SSO and data-risk line, and a pitch you can paste into #product. Leave your email and the next 7 issues arrive with all five briefs attached — no card, nothing to cancel.
A one-word verdict on every tool — adopt, pilot or skip — with the reason in one sentence.
The real price a 20-person product org lands on, not the headline tier on the pricing page.
The integration and data-risk line: which plan SSO needs, the SOC 2 posture, where your roadmap and customer data ends up.
A paste-ready 3-line pitch for #product, so making the case costs you nothing.
The conditions, not a recommendation for everyone.
Choose LaunchDarkly if
You want every PM, designer and support lead able to see and toggle flags. Seats are free, so visibility costs nothing — count your service connections and client-side MAU instead.
Choose GrowthBook if
Your event data has to stay in your own warehouse, or you are already using it for flags and want analytics on the same metric definitions rather than a second source of truth.
Watch the meter if
You are consumer or freemium at scale. Client-side MAU at published rates can exceed your observability bill — flag server-side where you can before you negotiate.
Refuse if
The proposal is to migrate a working flag estate to save money. Price both meters against your real counts first; the saving usually is not there and the migration risk is a production one.
01— Detail
Two meters, and the cheaper one depends on your product's shape
Write down two numbers: how many server-side SDK-to-environment connections you run, and how many unique client-side users or devices touch flags each month. Those are LaunchDarkly's published units. Then write down one more: how many people in your company need to EDIT metrics and experiments, which is GrowthBook's unit at $40 a seat on Pro.
For a typical B2B SaaS product org the result is counterintuitive. Twenty people wanting visibility costs $9,600 a year on GrowthBook Pro and $0 on LaunchDarkly; a handful of environments and a few thousand business users costs very little on LaunchDarkly's connection and MAU meters. Flip the product to consumer-freemium with millions of client-side users and the MAU line dominates everything. Neither vendor is being unfair — they are selling to different shapes, and the mistake is picking on reputation instead of on your own two numbers.
Kubernetes, serverless, Python and Ruby estates are explicitly outside LaunchDarkly's standard per-connection rate and are packaged separately. Say so when you ask for a quote.
GrowthBook Pro caps at 30 users and 3 projects. A 20-person org fits, but check the project count against how you actually separate work.
The managed-warehouse option gives up GrowthBook's best argument. If data residency is the reason you chose it, bring your own warehouse.
Our full seat-band pricing of LaunchDarkly, including the renewal levers, is published free at /verdicts/launchdarkly.
02— Detail
The governance tier is where both of them actually get expensive
GrowthBook puts SSO and SCIM provisioning, exportable audit logs and advanced access control on Enterprise at custom pricing. LaunchDarkly puts custom roles, approval workflows, scheduled changes and large-scale targeting on Enterprise, also custom. In both cases the trigger is not scale, it is governance: the quarter someone asks who approved a flag change, or your security team requires SAML, is the quarter you leave the published rate card.
So price year two. Get the Enterprise quote at your projected connection count or seat count, with the year-two uplift in writing, before you move a flag estate onto either platform — because afterwards your negotiating position is strictly worse, and a flag estate is the thing you least want to migrate twice.
Do not adopt
What we would tell you not to buy.
This is the half of any comparison that pays for itself, and the reason we take no sponsorships and run no affiliate links — we could not write this section if we did.
×Vendor consolidation
Folding feature flags into an analytics tool to consolidate vendors
Why not. This sounds like good hygiene and it is the costliest idea on the page. Flags are production control surface: they sit in the request path, they gate releases, and a bad evaluation is an incident rather than a wrong chart. Moving them to save a subscription means re-instrumenting every SDK, re-creating every targeting rule, and running two systems of truth during the cutover — all for a saving that, once you have priced the published meters against your actual connection and MAU counts, often turns out not to exist.
Instead. Price both meters against your real numbers first. Keep flags where they work, and if the metric-definition drift is the real pain, fix that by pointing your analytics at the same definitions rather than by moving the flag estate.
Avoids: Unclear as spend; avoids a production-path migration undertaken for a saving that may be zero
Keeping this honest
What would change our mind.
A verdict with no falsification condition is an opinion in a confident typeface. Here is what would move ours — and if one of these has happened since 2026-10-01, tell us and we will update the page.
A published Enterprise rate from either vendor. Today the tier that holds SSO, SCIM and approvals is quoted at both, so no honest total-cost comparison is possible without a sales process.
SSO on GrowthBook's published Pro tier. At $40 a seat, an identity requirement that forces a custom quote is a steep second step.
A published per-MAU band for B2B-shaped usage at LaunchDarkly. The current unit is honest but it reads as a risk to a buyer whose client-side counts are growing.
How this was written
Published 1 October 2026, last reviewed 2026-10-01, targeting the query “growthbook vs launchdarkly”. Every verdict in the table above is one this publication has published, with the issue or the read date beside it. Every product named is real and every link goes to a vendor’s own page. Where a vendor does not publish a price we say so and name the question to ask instead of inventing a number — and pricing is the detail that rots fastest, so check the vendor’s current page before you budget.
No sponsorships, no affiliate links and no paid placements anywhere on this site. That is a business-model decision, not a virtue: the do-not-adopt call above is the part readers pay for, and we could not write it if a vendor were funding the page. Corrections to [email protected].
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7 weekday issues free · no card · nothing renews
A one-word verdict on every tool — adopt, pilot or skip — with the reason in one sentence.
The real price a 20-person product org lands on, not the headline tier on the pricing page.
The integration and data-risk line: which plan SSO needs, the SOC 2 posture, where your roadmap and customer data ends up.
A paste-ready 3-line pitch for #product, so making the case costs you nothing.