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testcritic

Tonic.ai vs Mockoon

Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.

Entry price

Quote on request

Quote only

From $100 per month (Team, billed annually, up to 5 members)

Free tier

What drives the bill

The metric that actually scales your invoice.

Enterprise quote-based pricing by data volume and connected databases.

Free locally and forever; the paid cloud tier adds hosted mocks and team sync. Team covers 5 members, 3 cloud-deployed mocks and 100k calls a month, with Enterprise on a quote. Work emails get a 14-day trial, others 7 days with a card.

Free tier

Free trial.

The desktop app and CLI are free and open source.

Open source

MIT

Self-hostable

No-code authoring

Languages

CodelessPython
JavaScriptCodeless

Platforms

API
API

Fits teams

Scale-up / mid-marketEnterprise
Solo / side projectStartupScale-up / mid-market

Adoption

Established

Tonic.ai · since 2018

Widely used

Mockoon · since 2017

Strengths

  • Preserves referential integrity and statistical distribution, so applications behave as they do in production.
  • Directly addresses the GDPR and HIPAA exposure created by production data in lower environments.
  • Subsetting produces a small but coherent slice rather than a full copy.
  • Genuinely a minute from download to a working mock API.
  • Dynamic templating with faker-style helpers produces realistic responses.
  • Proxy mode mocks only the routes you need and passes the rest through.

Limitations

  • Expensive, with enterprise-only pricing.
  • Initial configuration of sensitive-field classification takes real effort.
  • Adds a pipeline stage that must be maintained as the schema evolves.
  • Desktop-first; sharing mocks across a team needs the paid cloud or a committed config file.
  • HTTP only.
  • Less suited to complex stateful behaviour than WireMock.

Best for

Organisations that currently copy production data into staging and know they should stop.

Front-end developers unblocking themselves while a backend is still being built.

Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.