Testing · head to head
Eppo vs Insomnia
Eppo
Testing
Warehouse-native experimentation and feature flagging, now sold as Datadog Experiments
- From
- On request
- Rated
- -
Insomnia
Testing
REST and GraphQL API client for development and testing
- From
- Free
- Rated
- -
The short version
- Only Insomnia has a free tier, so it costs nothing to try first.
- 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.; Insomnia git Sync on the free tier covers up to 3 users only
- They diverge on capability: Eppo covers Warehouse-native analysis, Insomnia covers REST API Client.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Eppo and Insomnia actually diverge.
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 Eppo
- Warehouse-native analysis
- Sequential testing
- CUPED variance reduction
- Feature flagging
- Metric governance
- Contextual bandits
- Experiment scorecards
- Heterogeneous effect analysis
Only in Insomnia
- REST API Client
- GraphQL Support
- gRPC Support
- GitHub
- GitLab
- Slack
- Windows support
- MacOS support
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 Insomnia
- A product organisation with low traffic on a key surface that needs variance reduction to reach a decision in weeks instead of monthsnot Insomnia
- 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 Insomnia
- An existing Datadog customer consolidating product analytics, feature flags and experimentation onto one vendor agreementnot Insomnia
Insomnia
- Sending and debugging HTTP, GraphQL and gRPC requestsnot Eppo
- Storing collections in Git rather than a vendor cloudnot Eppo
- Mocking an API endpoint before it existsnot Eppo
- Running collections in CI with the Inso CLInot Eppo
- Environment management across staging and productionnot 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.
Insomnia
- Git Sync on the free tier covers up to 3 users only
- Mock servers are capped at 1,000 requests a month on free, then $10 per 25,000
- Role-based access control requires Pro at $12 per user per month
- SSO, SCIM and vault integrations are Enterprise only at $45 per user per month
- Working without an account is limited to the local-only Scratch Pad
Pricing, plan by plan
Eppo
On request- Eppo, now Datadog Experiments$undefined/year
- Warehouse-native experiment analysis
- Feature flagging and assignment
- Sequential testing and CUPED variance reduction
Insomnia
Free- EssentialsFree
- unlimited Cloud/Local projects
- up to 3 users with Git Sync
- 1,000 mock server requests/month
- Pro$12/user/month
- unlimited users with Git Sync access
- unlimited organizations
- role-based access control
- Enterprise$45/user/month
- Kong Konnect integration
- SSO (SAML/OIDC)
- SCIM provisioning
Which should you pick?
Choose Eppo if
- You need warehouse-native analysis.
- You work on Web, Cloud.
- You also want sequential testing.
Choose Insomnia if
- You need rest api client.
- You want to start without paying.
- You work on Windows, MacOS, Linux, Web.
- You also want graphql support.
Questions people ask
- Is Eppo or Insomnia better?
- Neither clearly leads. Eppo starts at On request and Insomnia at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Eppo or Insomnia?
- Insomnia has a free tier; the other does not. Paid plans start at On request for Eppo and Free for Insomnia.
- Does Eppo or Insomnia run on more platforms?
- Eppo runs on Web, Cloud. Insomnia runs on Windows, MacOS, Linux, Web.
- Can I use Insomnia for free?
- Yes. Insomnia has a free tier, so you can try it without paying. Eppo starts at On request.
- 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 Insomnia is typically brought in for.
- What can Eppo do that Insomnia cannot?
- Eppo covers Warehouse-native analysis, Sequential testing, CUPED variance reduction, Feature flagging. Insomnia covers REST API Client, GraphQL Support, gRPC Support, GitHub.
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.
Insomnia: How much does Insomnia cost?
Insomnia offers a free Essentials plan. Pro plans cost $12 per user per month with annual billing offering 17% savings. Enterprise plans cost $45 per user per month with support for up to 50 users self-serve; contact sales for larger teams.
SourceEppo: 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.
Insomnia: Is there a free version of Insomnia?
Yes, the Essentials plan is free and includes unlimited Cloud and Local projects, Git Sync for up to 3 users, 1,000 mock server requests per month, Inso CLI, E2EE, custom linting, plugins, and AI features.
SourceEppo: Does it need a data warehouse?
Yes. Warehouse-native analysis is the whole architecture. Without Snowflake, BigQuery, Redshift or Databricks there is no product.
Insomnia: What mock server request limits apply to Insomnia plans?
Essentials includes 1,000 mock server requests per month. Pro includes 10,000 requests per month. Enterprise includes unlimited mock server requests. Additional mock server requests beyond plan allowances cost $10 per 25,000 requests.
SourceEppo: 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.
Related pages
Other head to heads
- Eppo vs GrowthBook
- Eppo vs Split
- Eppo vs Kameleoon
- Eppo vs Xray Test Management
- Eppo vs Qase
- Eppo vs Tricentis Tosca
- Eppo vs Appium
- Eppo vs TestRail
- Eppo vs Katalon
- Eppo vs Zephyr Scale
- Eppo vs TestNG
- Eppo vs Percy
- Eppo vs Applitools
- Eppo vs pytest
- Eppo vs Testsigma
- Eppo vs Vitest
- Eppo vs Jest
- Eppo vs Playwright
- Eppo vs GitHub Actions
- Eppo vs BrowserStack
- Eppo vs Cypress
- Eppo vs CircleCI
- Eppo vs BugHerd
- Eppo vs Cucumber
- Insomnia vs GrowthBook
- Insomnia vs Split
- Insomnia vs Kameleoon
- Insomnia vs Xray Test Management
- Insomnia vs Qase
- Insomnia vs Tricentis Tosca
- Insomnia vs Appium
- Insomnia vs TestRail
- Insomnia vs Katalon
- Insomnia vs Zephyr Scale
- Insomnia vs TestNG
- Insomnia vs Percy
- Insomnia vs Applitools
- Insomnia vs pytest
- Insomnia vs Testsigma
- Insomnia vs Vitest
- Insomnia vs Jest
- Insomnia vs Playwright
- Insomnia vs GitHub Actions
- Insomnia vs BrowserStack
- Insomnia vs Cypress
- Insomnia vs CircleCI
- Insomnia vs BugHerd
- Insomnia vs Cucumber