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Developer Tools · head to head

ConfigCat vs Glean

ConfigCat logo

ConfigCat

Developer Tools

Feature flag service priced per flag and environment with unlimited seats and unlimited monthly active users

From
Free
Free plan
Yes
Visit ConfigCatFull review
Glean logo

Glean

Business Intelligence

Work AI that Works

From
On request
Free plan
No
Visit GleanFull review

The short version

  • ConfigCat starts at $110/mo; Glean prices on request.
  • Where Glean falls short: no pricing published on website; enterprise sales model requires demo request.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which ConfigCat and Glean actually diverge.

Attributes where ConfigCat and Glean differ
AttributeConfigCatGlean
Starting priceFreeOn request
Pricing modelPer month by feature flag and environment countQuote
Free tierYesNo
PlatformsWeb, API, iOS, Android, WindowsWeb
CategoryDeveloper ToolsBusiness Intelligence

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 ConfigCat

  • Feature flags and configuration
  • Percentage rollouts
  • Targeting rules and segments
  • Unlimited seats
  • Global CDN delivery
  • Audit log
  • Public API and webhooks
  • SDKs across languages

Only in Glean

Nothing recorded that ConfigCat does not also cover.

What people use each for

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

ConfigCat

  • A consumer or mobile app with millions of users where per-MAU flag pricing would cost more than the flags are worthnot Glean
  • A team that wants every engineer, product manager and support agent to have a login without paying per seatnot Glean
  • Decoupling deployment from release with percentage rollouts and a kill switch, without buying an experimentation platformnot Glean
  • A small team that needs ten flags permanently and can run indefinitely on the free tiernot Glean

Glean

  • Onboarding new employees across distributed teams to company knowledgenot ConfigCat
  • Maintaining centralized searchable intranet for compliance requirementsnot ConfigCat
  • Surfacing historical archived content for editorial and sales teamsnot ConfigCat
  • Creating AI agents through natural language without engineersnot ConfigCat
  • Reducing language model costs by filtering unnecessary datanot ConfigCat

Where each one falls short

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

ConfigCat

  • There is no experimentation or statistical analysis engine, so teams wanting real A/B tests with significance testing must buy and integrate a separate analytics or experimentation product
  • Pricing by flag count punishes exactly the hygiene you want: the Pro tier caps at 100 flags, so teams that do not aggressively retire stale flags are pushed to the 325 dollar Smart tier for housekeeping reasons rather than growth
  • The free tier allows only 2 environments, which does not cover the common development, staging and production split, so almost any real deployment starts on a paid plan
  • It is a smaller vendor than the category incumbents, so enterprise procurement teams will find less depth in compliance attestations, contractual terms and reference architecture than LaunchDarkly offers
  • Flag evaluation relies on SDK-side caching of a CDN-delivered config, which is fast but means propagation of a change is eventually consistent rather than instant, something to understand before relying on it as an emergency kill switch

Glean

  • No pricing published on website; enterprise sales model requires demo request

Pricing, plan by plan

ConfigCat

Free
  • Forever FreeFree
    • 10 feature flags
    • 2 environments and 2 products
    • 2 segments
  • Pro$110/mo
    • 100 feature flags
    • 3 environments and 3 products
    • Unlimited seats and MAUs
  • Smart$325/mo
    • Unlimited feature flags
    • Unlimited environments, products and segments
    • Unlimited seats and MAUs
  • Enterprise$900/mo
    • Everything in Smart
    • Enterprise support and controls
    • Unlimited everything on flag counts

Glean

On request

No published plan breakdown. See the Glean review.

Which should you pick?

Choose ConfigCat if

  • You need feature flags and configuration.
  • You want to start without paying.
  • You work on Web, API, iOS, Android, Windows.
  • You also want percentage rollouts.
ConfigCat review

Choose Glean if

Nothing in the data separates Glean from ConfigCat on the points above - pick on price and on how each one feels to use.

Glean review

Questions people ask

Is ConfigCat or Glean better?
Neither clearly leads. ConfigCat starts at Free and Glean at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ConfigCat or Glean?
ConfigCat has a free tier; the other does not. Paid plans start at Free for ConfigCat and On request for Glean.
Does ConfigCat or Glean run on more platforms?
ConfigCat runs on Web, API, iOS, Android, Windows. Glean runs on Web.
Can I use ConfigCat for free?
Yes. ConfigCat has a free tier, so you can try it without paying. Glean starts at On request.
What is ConfigCat best used for?
ConfigCat is most often used for a consumer or mobile app with millions of users where per-mau flag pricing would cost more than the flags are worth, a team that wants every engineer, product manager and support agent to have a login without paying per seat, decoupling deployment from release with percentage rollouts and a kill switch, without buying an experimentation platform, a small team that needs ten flags permanently and can run indefinitely on the free tier. Of those, a consumer or mobile app with millions of users where per-mau flag pricing would cost more than the flags are worth and a team that wants every engineer, product manager and support agent to have a login without paying per seat are not what Glean is typically brought in for.
What can ConfigCat do that Glean cannot?
ConfigCat covers Feature flags and configuration, Percentage rollouts, Targeting rules and segments, Unlimited seats.

Answered from the vendors’ own pages

ConfigCat: How is ConfigCat priced?

By feature flag, environment and product count. Seats, monthly active users and flag reads are unlimited on every plan.

Glean: How much does Glean cost?

Glean does not publish pricing on its website. The platform uses an enterprise sales model where customers request a demo and pricing is determined through direct consultation with the sales team.

Source
ConfigCat: Is the free tier usable?

For small projects yes, but at 10 flags and 2 environments it will not cover a dev, staging and production setup.

Glean: Does Glean offer a free tier or trial?

No free tier information is available on Glean's website. Interested users must request a demo to learn about trial options and pricing.

Source
ConfigCat: Can it run A/B tests?

It can split traffic, but there is no statistics engine. You need a separate analytics tool to decide a winner.

ConfigCat: How fast does a flag change take effect?

SDKs poll and cache, so changes propagate on the polling interval rather than instantly.

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