=== Deployment timing
**Monday, 27 April 2026**
WARNING: this date will not be considered final until @ppelberg removes this warning label.
=== Announcement(s)
//See T420667.//
=== Bucketing criteria
**Bucketing Requirements:**
* Bucketing should include both registered and unregistered users with 100 or fewer edits at first exposure. This will require the use of the [edge-unique ](https://wikitech.wikimedia.org/wiki/Test_Kitchen/Conduct_an_experiment#Experiment_design:_identifier_type) identifier type.
* Only users at participating Wikipedias as identified in T420664
* All users, who are editing a **mobile web or desktop** main namespace page (NS:0) using the visual editor, at any of the Wikipedias should have a 50% chance of being included/bucketed into the A/B test's control or treatment group.
* The treatment group should have Edit Suggestions enabled while the control group will not.
* Each device should remain in the same test group for the duration of the test (and across sessions and pages). Note: If the cookie is cleared manually or automatically – by, for example, a privacy enhanced browser – the client is issued a new wmf-uniq cookie, and they may or may not end up enrolled or even assigned to the same group.
=== Instrumentation Requirements
* Ensure Test Kitchen stream is configured appropriately
* .
* .
=== Participating wikis
Only those with ~85% UI translation, and good configurations, and no concerns raised onwiki
| ID | [[https://translatewiki.net/wiki/Special:MessageGroupStats?group=ext-visualeditor-ve-mw-editcheck&messages=&suppressempty=1&x=D|UI % transl.]] | [[https://global-search.toolforge.org/?q=.*®ex=1&namespaces=8&title=Editcheck-config.json|json ready]]| on-wiki discussion(s)
|---|---|---|---
| en.wiki | - | [[https://en.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|good]] | [[https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)#Suggestion_Mode_A/B_test_with_newcomers|link]]
| fr.wiki | 99% | [[https://fr.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|good]] | [[https://fr.wikipedia.org/wiki/Wikip%C3%A9dia:Le_Bistro/22_avril_2026#Test_A/B_du_mode_Suggestion_avec_les_nouveaux_arrivants|link]]
| de.wiki | 100% | [[https://de.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|good]] | [[https://de.wikipedia.org/wiki/Wikipedia:Projektdiskussion#A/B-Test_des_Vorschlagsmodus_mit_Neulingen|link]]
| ja.wiki | 99% | [[https://ja.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|good]] | [[https://ja.wikipedia.org/w/index.php?title=Wikipedia%3A%E3%81%8A%E7%9F%A5%E3%82%89%E3%81%9B#%E3%81%8A%E3%81%99%E3%81%99%E3%82%81%E3%83%A2%E3%83%BC%E3%83%89%E3%81%AE%E6%96%B0%E8%A6%8F%E5%8F%82%E5%8A%A0%E8%80%85%E5%AF%BE%E8%B1%A1_A/B_%E3%83%86%E3%82%B9%E3%83%88|link]]
| es.wiki | 98% | [[https://es.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|good]] | [[https://es.wikipedia.org/wiki/Wikipedia:Caf%C3%A9/Archivo/T%C3%A9cnica/Actual#Test_A/B_del_Modo_de_Sugerencias_con_usuarios/as_que_est%C3%A1n_dando_sus_primeros_pasos_en_la_edici%C3%B3n|link]]
| ru.wiki | 84% | [[https://ru.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|good]] | [[https://ru.wikipedia.org/wiki/%D0%92%D0%B8%D0%BA%D0%B8%D0%BF%D0%B5%D0%B4%D0%B8%D1%8F:%D0%A4%D0%BE%D1%80%D1%83%D0%BC/%D0%9D%D0%BE%D0%B2%D0%BE%D1%81%D1%82%D0%B8#A/B-%D1%82%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5_%D0%A0%D0%B5%D0%B6%D0%B8%D0%BC%D0%B0_%D0%BF%D1%80%D0%B5%D0%B4%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B9_%D0%B4%D0%BB%D1%8F_%D0%BD%D0%BE%D0%B2%D0%B8%D1%87%D0%BA%D0%BE%D0%B2|link]]
| pt.wiki | 28%/72% | [[https://pt.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|needs work]] | [[https://pt.wikipedia.org/wiki/Wikip%C3%A9dia:Caf%C3%A9_dos_programadores#Teste_A/B_do_Modo_de_Sugest%C3%B5es_com_pessoas_novatas|link]]
| zh.wiki | 99% | [[https://zh.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|TKTK]] | [[https://zh.wikipedia.org/wiki/Wikipedia:%E4%BA%92%E5%8A%A9%E5%AE%A2%E6%A0%88/%E6%8A%80%E6%9C%AF#%E5%BB%BA%E8%AD%B0%E6%A8%A1%E5%BC%8F%E7%9A%84_A/B_%E6%B8%AC%E8%A9%A6%EF%BC%88%E9%87%9D%E5%B0%8D%E6%96%B0%E7%94%A8%E6%88%B6%EF%BC%89|link]]
| it.wiki | 49% | [[https://it.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|TKTK]] | [[https://it.wikipedia.org/w/index.php?title=Wikipedia%3AOfficina#Test_A/B_della_%22Modalit%C3%A0_suggerimento%E2%80%9D_con_i_nuovi_utenti|link]]
| pl.wiki | 99% | [[https://pl.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|good]] | [[https://pl.wikipedia.org/wiki/Wikipedia:Kawiarenka/Kwestie_techniczne#Test_A/B_trybu_sugestii_z_udzia%C5%82em_nowych_u%C5%BCytkownik%C3%B3w|link]]
| nl.wiki | 99% | [[https://nl.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|needs work]] | [[https://nl.wikipedia.org/w/index.php?title=Wikipedia%3ASHEIC#A/B-test_van_de_Voorgestelde-bewerkingen-modus_met_nieuwkomers|link]]
| he.wiki | 99% | [[https://he.wikipedia.org/wiki/%D7%9E%D7%93%D7%99%D7%94%20%D7%95%D7%99%D7%A7%D7%99:Editcheck-config.json|needs disambig]] | [[https://he.wikipedia.org/wiki/%D7%95%D7%99%D7%A7%D7%99%D7%A4%D7%93%D7%99%D7%94:%D7%A4%D7%99%D7%AA%D7%95%D7%97_%D7%94%D7%AA%D7%A9%D7%AA%D7%99%D7%AA#%D7%91%D7%93%D7%99%D7%A7%D7%AA_A/B_%D7%9C'%D7%9E%D7%A6%D7%91_%D7%94%D7%A6%D7%A2%D7%95%D7%AA'_%D7%A2%D7%9D_%D7%A2%D7%95%D7%A8%D7%9B%D7%95%D7%AA_%D7%95%D7%A2%D7%95%D7%A8%D7%9B%D7%99%D7%9D_%D7%97%D7%93%D7%A9%D7%99%D7%9D|link]]
| ar.wiki | 100% | [[https://ar.wikipedia.org/wiki/%D9%85%D9%8A%D8%AF%D9%99%D8%A7%D9%88%D9%8A%D9%83%D9%8A:Editcheck-config.json|good]] | [[https://ar.wikipedia.org/wiki/%D9%88%D9%8A%D9%83%D9%8A%D8%A8%D9%8A%D8%AF%D9%8A%D8%A7:%D8%A7%D9%84%D9%85%D9%8A%D8%AF%D8%A7%D9%86/%D8%AA%D9%82%D9%86%D9%8A%D8%A9#%D9%88%D8%B6%D8%B9_%D8%A7%D9%84%D8%A7%D9%82%D8%AA%D8%B1%D8%A7%D8%AD_%E2%80%93_%D8%A7%D8%AE%D8%AA%D8%A8%D8%A7%D8%B1_%D8%A3/%D8%A8_%D9%85%D8%B9_%D8%A7%D9%84%D9%88%D8%A7%D9%81%D8%AF%D9%8A%D9%86_%D8%A7%D9%84%D8%AC%D8%AF%D8%AF|link]]
| cs.wiki | 99% | [[https://cs.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|good]] | [[https://cs.wikipedia.org/wiki/Wikipedie:Pod_l%C3%ADpou_(technika)#A/B_testov%C3%A1n%C3%AD_re%C5%BEimu_n%C3%A1vrh%C5%AF_na_nov%C3%A1%C4%8Dc%C3%ADch|link]]
| ko.wiki | 99% | [[https://ko.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|TKTK]] | [[https://ko.wikipedia.org/wiki/%EC%9C%84%ED%82%A4%EB%B0%B1%EA%B3%BC:%EC%82%AC%EB%9E%91%EB%B0%A9_(%EA%B8%B0%EC%88%A0)/2026%EB%85%84_4%EC%9B%94#%EC%83%88_%EC%82%AC%EC%9A%A9%EC%9E%90%EB%A5%BC_%EC%9C%84%ED%95%9C_A/B_%ED%85%8C%EC%8A%A4%ED%8A%B8_%EC%A0%9C%EC%95%88_%EB%AA%A8%EB%93%9C|link]]
| vi.wiki | 63% | [[https://vi.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|TKTK]] | [[https://vi.wikipedia.org/wiki/Wikipedia:Th%E1%BA%A3o_lu%E1%BA%ADn#Ch%E1%BA%BF_%C4%91%E1%BB%99_g%E1%BB%A3i_%C3%BD_(th%E1%BB%AD_nghi%E1%BB%87m_A/B_v%E1%BB%9Bi_ng%C6%B0%E1%BB%9Di_d%C3%B9ng_m%E1%BB%9Bi)|link]]
| bn.wiki | 43% | [[https://bn.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|TKTK]] | [[https://bn.wikipedia.org/wiki/%E0%A6%89%E0%A6%87%E0%A6%95%E0%A6%BF%E0%A6%AA%E0%A6%BF%E0%A6%A1%E0%A6%BF%E0%A6%AF%E0%A6%BC%E0%A6%BE:%E0%A6%95%E0%A6%BE%E0%A6%B0%E0%A6%BF%E0%A6%97%E0%A6%B0%E0%A6%BF_%E0%A6%86%E0%A6%B2%E0%A7%8B%E0%A6%9A%E0%A6%A8%E0%A6%BE%E0%A6%B8%E0%A6%AD%E0%A6%BE#%E0%A6%A8%E0%A6%A4%E0%A7%81%E0%A6%A8%E0%A6%A6%E0%A7%87%E0%A6%B0_%E0%A6%B8%E0%A6%BE%E0%A6%A5%E0%A7%87_%E0%A6%AA%E0%A6%B0%E0%A6%BE%E0%A6%AE%E0%A6%B0%E0%A7%8D%E0%A6%B6_%E0%A6%AE%E0%A7%8B%E0%A6%A1_%E0%A6%8F/%E0%A6%AC%E0%A6%BF_%E0%A6%9F%E0%A7%87%E0%A6%B8%E0%A7%8D%E0%A6%9F|link]]
| sv.wiki | 99% | [[https://sv.wikipedia.org/wiki/MediaWiki:Editcheck-config.json|good]] | [[https://sv.wikipedia.org/wiki/Wikipedia:Bybrunnen#Suggestion_Mode_A/B_test_with_newcomers|link]]
NOTE: List of wikis was finalized via T420664.
=== Open question(s)
- [ ] 1. Will non-cache splitting be available by the time the controlled experiment is scheduled to begin?
-- Update expected from Experiment Platform Team by EOD Friday, 3 April 2026.
- [ ] 2. If the answer to "1." is "No." and we move forward with cache splitting, what % of traffic (at en.wiki) will we sample?