Softwr

Testing · head to head

Eppo vs Katalon

Eppo logo

Eppo

Testing

Warehouse-native experimentation and feature flagging, now sold as Datadog Experiments

From
On request
Rated
-
Full reviewWebsite
Katalon logo

Katalon

Testing

Commercial low-code test automation platform built on Appium and Selenium, priced per seat plus separate cloud session add-ons

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Eppo datadog acquired Eppo in May 2025 and is folding it into Datadog Experiments, so you are now buying a component of an observability suite rather than an independent product, and roadmap priorities will follow Datadog’s bundle strategy.; Katalon real cost stacks three separate charges, per-seat authoring licence, the True Platform add-on for test management, and per-session cloud execution, so the advertised seat price significantly understates total spend for a team running cloud tests regularly.
  • They diverge on capability: Eppo covers Warehouse-native analysis, Katalon covers Low-code test recording.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Eppo and Katalon actually diverge.

Attributes where Eppo and Katalon differ
AttributeEppoKatalon
Pricing modelquotePer seat per month, plus separate per-session cloud execution charges
PlatformsWeb, CloudWeb, Windows, macOS

Identical on both: starting price (On request), free tier (No), 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 Eppo

  • Warehouse-native analysis
  • Sequential testing
  • CUPED variance reduction
  • Feature flagging
  • Metric governance
  • Contextual bandits
  • Experiment scorecards
  • Heterogeneous effect analysis

Only in Katalon

  • Low-code test recording
  • Built on Selenium and Appium
  • Object repository
  • AI-assisted test generation
  • TestCloud execution
  • TestOps management

What people use each for

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

Eppo

  • A company whose experiment results have repeatedly disagreed with the analytics team’s own numbers because the two systems define revenue differentlynot Katalon
  • A product organisation with low traffic on a key surface that needs variance reduction to reach a decision in weeks instead of monthsnot Katalon
  • A team that must keep user-level event data inside its own warehouse for regulatory reasons and cannot ship it to a third-party analytics vendornot Katalon
  • An existing Datadog customer consolidating product analytics, feature flags and experimentation onto one vendor agreementnot Katalon

Katalon

  • A QA team wanting a lower-code authoring layer over Selenium and Appium for testers without deep coding backgroundsnot Eppo
  • An organisation wanting test management and AI-assisted test maintenance bundled with automation authoring in one commercial productnot Eppo
  • A team needing occasional cross-browser or device cloud sessions without maintaining its own device lab or Selenium Gridnot Eppo
  • An enterprise wanting a single vendor and support contract for test authoring, management and cloud execution togethernot Eppo

Where each one falls short

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

Eppo

  • Datadog acquired Eppo in May 2025 and is folding it into Datadog Experiments, so you are now buying a component of an observability suite rather than an independent product, and roadmap priorities will follow Datadog’s bundle strategy.
  • No pricing is published anywhere, before or after the acquisition; the site offers only a demo request, so cost cannot be estimated without a sales process and is likely to be quoted alongside a wider Datadog contract.
  • Because analysis runs in your warehouse, Eppo shifts compute cost onto your Snowflake or BigQuery bill; a large experiment programme with frequent recomputation raises a line item that does not appear in the Eppo quote at all.
  • Results are only as fresh as the pipeline feeding the warehouse, so teams used to near-real-time dashboards from an event-based tool will wait hours for updated numbers, which slows down the fast iteration loops some product teams rely on.
  • It assumes a mature data stack with a warehouse, defined metrics and analysts who can maintain them; an organisation without that has to build the data foundation first, which makes the real adoption cost far larger than the licence.

Katalon

  • Real cost stacks three separate charges, per-seat authoring licence, the True Platform add-on for test management, and per-session cloud execution, so the advertised seat price significantly understates total spend for a team running cloud tests regularly.
  • Since it is built on Selenium and Appium underneath, a team with strong automation engineers can replicate most of the core capability for free, paying only for optional cloud execution elsewhere, making Katalon's value proposition mainly about authoring speed rather than unique capability.
  • The steep first-three-seats discount versus the fourth-seat-and-beyond price means cost per seat rises sharply as a team scales past three testers on Katalon Studio alone.
  • Low-code recorded tests can become brittle and hard to maintain at scale in the same way any record-and-playback approach does, requiring the team to still write real code for complex scenarios.
  • Enterprise pricing is quote-only, so the largest deployments lose the pricing transparency the published seat tiers otherwise offer.

Pricing, plan by plan

Eppo

On request
  • Eppo, now Datadog Experiments$undefined/year
    • Warehouse-native experiment analysis
    • Feature flagging and assignment
    • Sequential testing and CUPED variance reduction

Katalon

On request
  • Katalon Studio$84/month
    • Annual billing, first three seats at 84 US dollars a seat a month
    • Fourth seat and beyond at 150 US dollars a seat a month
    • Low-code recording, object repository, Selenium and Appium engine underneath
  • True Automation$167/month
    • Annual billing, per seat
    • Includes Studio features plus test management and AI agents
    • True Platform TestOps and TestCloud sold as a further add-on at 700 US dollars a seat a year
  • Enterprise$undefined/year
    • Custom quote for private SaaS and hybrid licensing
    • Dedicated support
    • Negotiated cloud session volume

Which should you pick?

Choose Eppo if

  • You need warehouse-native analysis.
  • You work on Web, Cloud.
  • You also want sequential testing.
Eppo review

Choose Katalon if

  • You need low-code test recording.
  • You work on Web, Windows, macOS.
  • You also want built on selenium and appium.
Katalon review

Questions people ask

Is Eppo or Katalon better?
Neither clearly leads. Eppo starts at On request and Katalon at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Eppo or Katalon?
Eppo starts at On request and Katalon at On request.
Does Eppo or Katalon run on more platforms?
Eppo runs on Web, Cloud. Katalon runs on Web, Windows, macOS.
What is Eppo best used for?
Eppo is most often used for a company whose experiment results have repeatedly disagreed with the analytics team’s own numbers because the two systems define revenue differently, a product organisation with low traffic on a key surface that needs variance reduction to reach a decision in weeks instead of months, a team that must keep user-level event data inside its own warehouse for regulatory reasons and cannot ship it to a third-party analytics vendor, an existing datadog customer consolidating product analytics, feature flags and experimentation onto one vendor agreement. Of those, a company whose experiment results have repeatedly disagreed with the analytics team’s own numbers because the two systems define revenue differently and a product organisation with low traffic on a key surface that needs variance reduction to reach a decision in weeks instead of months are not what Katalon is typically brought in for.
What can Eppo do that Katalon cannot?
Eppo covers Warehouse-native analysis, Sequential testing, CUPED variance reduction, Feature flagging. Katalon covers Low-code test recording, Built on Selenium and Appium, Object repository, AI-assisted test generation.

Answered from the vendors’ own pages

Eppo: Is Eppo still a separate product?

It is still sold and supported, but Datadog acquired it in May 2025 and it is branded as Datadog Experiments. Buy it expecting a Datadog product roadmap.

Katalon: Is Katalon free?

No, though a 30-day free trial with no credit card is offered; the product is commercial with per-seat licensing.

Eppo: What does it cost?

Nothing is published. There is no pricing page, only a demo request, and pricing is now likely bundled into a Datadog agreement.

Katalon: Does Katalon replace Selenium and Appium?

No, it is built on top of them; Katalon adds a low-code authoring layer, test management and cloud execution rather than a different automation engine.

Eppo: Does it need a data warehouse?

Yes. Warehouse-native analysis is the whole architecture. Without Snowflake, BigQuery, Redshift or Databricks there is no product.

Katalon: Is cloud execution included in the seat price?

No, TestCloud cross-browser and mobile sessions are billed separately, at 197 US dollars a session monthly or 1,899 annually per session.

Eppo: Does it include feature flags?

Yes. Assignment and measurement come from the same system, which is the main reason teams pick it over pairing a flag tool with a separate analysis tool.

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