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Testing · head to head

GrowthBook vs Tricentis Tosca

GrowthBook logo

GrowthBook

Testing

Open source feature flags and A/B testing that run experiment analysis inside your own data warehouse

From
Free
Rated
-
Full reviewWebsite
Tricentis Tosca logo

Tricentis Tosca

Testing

Model based test automation for enterprise applications, with deep SAP and mainframe coverage

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only GrowthBook has a free tier, so it costs nothing to try first.
  • Each has a real cost: GrowthBook warehouse-native analysis is only an advantage if you have a warehouse with clean event data in it; without one, GrowthBook has nothing to compute against and you are back to buying an event-collecting platform.; Tricentis Tosca licensing is quoted per workstation at enterprise figures, so the tool only pays back where testing headcount is already large; a team of five will not recover the cost.
  • They diverge on capability: GrowthBook covers Feature flags, Tricentis Tosca covers Model based test design.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which GrowthBook and Tricentis Tosca actually diverge.

Attributes where GrowthBook and Tricentis Tosca differ
AttributeGrowthBookTricentis Tosca
Starting priceFreeOn request
Pricing modelPer user per monthquote
Free tierYesNo
PlatformsWeb, Self-hosted, DockerWindows, Web

Identical on both: user rating (Not yet rated), category (Testing).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in GrowthBook

  • Feature flags
  • Warehouse-native analysis
  • Reusable metric definitions
  • Bayesian and frequentist engines
  • CUPED variance reduction
  • Visual editor
  • Self-hosting
  • Guardrail metrics

Only in Tricentis Tosca

  • Model based test design
  • SAP coverage
  • Risk based test selection
  • API and message layer testing
  • Test data management
  • Distributed execution

What people use each for

The jobs each tool is most often brought in to do.

GrowthBook

  • An engineering team that wants feature flags without a per-monthly-active-user bill that grows with product successnot Tricentis Tosca
  • A data team that needs experiment results to reconcile exactly with the metrics reported in its BI toolnot Tricentis Tosca
  • A company with data residency or privacy constraints that cannot send user-level event data to a third-party vendornot Tricentis Tosca
  • Running long-tail experiments where sequential testing and CUPED shorten the time to a decision on low-traffic surfacesnot Tricentis Tosca

Tricentis Tosca

  • Regression testing an SAP estate through an S/4HANA migration where thousands of transactions must be verifiednot GrowthBook
  • A regulated organisation that needs auditable evidence of what was tested before each releasenot GrowthBook
  • Testing a mixed estate of browser, Windows desktop and mainframe applications from one suitenot GrowthBook
  • A test centre of excellence with dozens of testers where per screen maintenance beats per test maintenancenot GrowthBook

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

GrowthBook

  • Warehouse-native analysis is only an advantage if you have a warehouse with clean event data in it; without one, GrowthBook has nothing to compute against and you are back to buying an event-collecting platform.
  • Metrics are SQL, so a marketing or product team without data engineering support cannot define or fix them, and a badly written metric silently produces a confident wrong answer.
  • Cloud Pro bills per seat and then adds CDN request and bandwidth overages, so a high-traffic site can find the variable component exceeds the seat cost it budgeted for.
  • Self-hosting means you own the Mongo database, the SDK endpoint availability and the upgrade path, and a flag service that is down is a production incident, not an analytics inconvenience.
  • The statistics engine exposes real choices, Bayesian versus frequentist, sequential testing, variance reduction, and the tool will not stop a team that configures them wrongly, so it rewards statistical literacy and punishes its absence.

Tricentis Tosca

  • Licensing is quoted per workstation at enterprise figures, so the tool only pays back where testing headcount is already large; a team of five will not recover the cost.
  • Building the initial application model takes months and is usually done with paid consultants, meaning value arrives long after the invoice does.
  • The authoring environment is Windows only and heavy, which sits awkwardly in organisations whose engineers work on macOS or Linux.
  • Tricentis has assembled its portfolio through acquisitions, so products sold together vary in how deeply they are integrated and a buyer should verify the joins rather than the diagram.
  • Skills are specific to Tosca and not transferable, so recruiting testers means hiring for a niche tool and losing a trained one hurts more than losing a Selenium engineer.

Pricing, plan by plan

GrowthBook

Free
  • Open source (self-hosted)Free
    • Unlimited users, feature flags and experiments
    • One project
    • MIT licensed, you run the infrastructure
  • Starter (cloud)Free
    • Up to 3 users
    • 1 project
    • Unlimited flags, experiments and traffic
  • Pro (cloud)$40/month
    • Per seat, up to 50 users
    • 3 projects
    • CDN overage at $10 per million requests beyond the included allowance
  • Enterprise$undefined/year
    • Unlimited users and projects
    • SSO, audit logs and advanced permissions
    • Available on cloud or self-hosted

Tricentis Tosca

On request
  • Tricentis Tosca$undefined/year
    • Quoted per workstation licence with separate execution agents and module packs
    • Implementation is normally sold with partner services, which typically exceed first year licence cost

Which should you pick?

Choose GrowthBook if

  • You need feature flags.
  • You want to start without paying.
  • You work on Web, Self-hosted, Docker.
  • You also want warehouse-native analysis.
GrowthBook review

Choose Tricentis Tosca if

  • You need model based test design.
  • You work on Windows, Web.
  • You also want sap coverage.
Tricentis Tosca review

Questions people ask

Is GrowthBook or Tricentis Tosca better?
Neither clearly leads. GrowthBook starts at Free and Tricentis Tosca at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GrowthBook or Tricentis Tosca?
GrowthBook has a free tier; the other does not. Paid plans start at Free for GrowthBook and On request for Tricentis Tosca.
Does GrowthBook or Tricentis Tosca run on more platforms?
GrowthBook runs on Web, Self-hosted, Docker. Tricentis Tosca runs on Windows, Web.
Can I use GrowthBook for free?
Yes. GrowthBook has a free tier, so you can try it without paying. Tricentis Tosca starts at On request.
What is GrowthBook best used for?
GrowthBook is most often used for an engineering team that wants feature flags without a per-monthly-active-user bill that grows with product success, a data team that needs experiment results to reconcile exactly with the metrics reported in its bi tool, a company with data residency or privacy constraints that cannot send user-level event data to a third-party vendor, running long-tail experiments where sequential testing and cuped shorten the time to a decision on low-traffic surfaces. Of those, an engineering team that wants feature flags without a per-monthly-active-user bill that grows with product success and a data team that needs experiment results to reconcile exactly with the metrics reported in its bi tool are not what Tricentis Tosca is typically brought in for.
What can GrowthBook do that Tricentis Tosca cannot?
GrowthBook covers Feature flags, Warehouse-native analysis, Reusable metric definitions, Bayesian and frequentist engines. Tricentis Tosca covers Model based test design, SAP coverage, Risk based test selection, API and message layer testing.

Answered from the vendors’ own pages

GrowthBook: Is the self-hosted version actually usable, or crippled?

It is genuinely usable: unlimited users, flags and experiments on one project under an MIT licence. The paid tiers add multiple projects, SSO, audit logs and support.

Tricentis Tosca: Is Tosca scriptless?

Test assembly is scriptless, but non trivial estates still need TQL queries and custom modules, which is programming under another name.

GrowthBook: Do I need a data warehouse?

For experiment analysis, effectively yes. Feature flagging works without one, but the reason to choose GrowthBook over a flag-only tool is the warehouse-native statistics.

Tricentis Tosca: Why does it dominate SAP testing?

It holds SAP certification, covers SAP GUI and Fiori at transaction level, and is sold through the same integrators that run SAP programmes.

GrowthBook: How does the cost compare with LaunchDarkly or Optimizely?

GrowthBook charges per seat rather than per monthly active user or per tracked event, so cost stops scaling with traffic. At high volume that difference is large.

Tricentis Tosca: Can it replace Selenium for a web only product?

It can, but the economics do not work. Model based testing pays off across large heterogeneous estates, not one web application.

GrowthBook: Does it support mobile and server-side flags?

Yes, there are SDKs across JavaScript, React, Python, Go, Ruby, PHP, Java, Kotlin, Swift and more, covering client, server and mobile evaluation.

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