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Following our new versioning policy, the Preview tier has been replaced by Experimental. If you are currently calling Preview endpoints, you must migrate to the stable 2026.07 version before the end of 2026.

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Experimental version

The experimental version lets you explore brand-new features before they are finalized, so you can plan ahead and provide early feedback. New features may appear in the experimental version at any time and may change significantly before — or without ever — reaching a stable release. This version can be called using “experimental” as the version identifier:
For more details, visit our Versioning policy page.
Experimental — For early exploration
  • Test brand-new features before they’re finalized
  • Contracts may change significantly at any time
  • Not suitable for production use
For the stable endpoints and other detailed documentation, see the current Criteo API version.