Deployment timing
Wednesday, 8 October 2025
Tech/News Announcement
This user-notice was handled as part of T399669#11234558
Bucketing criteria
Bucketing Requirements:
- Bucketing should include both registered and unregistered users at all identified "Participating wikis" below.
- All users, who are editing a desktop or mobile main namespace page (NS:0), at any of the participating wikis should have a 50% chance of being included/bucketed into the A/B test's control or treatment group.
- Bucketing should be done on a per-Wikipedia basis. 50% of people within a given wiki should be placed within the control group; 50% should be bucketed in the treatment group
- The test group should have Paste Check experience enabled while the control group should not
- People should remain in the same test group for the duration of the test (and across sessions and pages).
NOTE: We need to specify the experiences that will be available in both the test and the control groups. For example, will all wikis in the control group have access to Multi-Check (References)?
Instrumentation-Related Requirements
- A bucket is applied to these events so we can distinguish all events logged for the control group and the test group within the A/B test.
- The bucket should be descriptive of the test in case there are overlapping AB tests.
- The anonymous_user_token field is populated for unregistered users in the test.
Participating wikis
NOTE: List of wikis was finalized via T403680.
| ID | Wiki |
|---|---|
| 1. | de.wiki |
| 2. | pl.wiki |
| 3. | id.wiki |
| 4. | vi.wiki |
| 5. | tw.wiki |
| 6. | simple.wiki |
| 7. | it.wiki |
| 8. | nl.wiki |
| 9. | cs.wiki |
| 10. | uk.wiki |
| 11. | ru.wiki |
| 12. | bn.wiki |
| 13. | hi.wiki |
| 14. | zh.wiki |
| 15. | ar.wiki |
| 16. | fa.wiki |
| 17. | sw.wiki |
| 18. | dag.wiki |
| 19. | fon.wiki |
| 20. | ca.wiki |
| 21. | eu.wiki |
| 22. | gl.wiki |