[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"branding":3,"analytics":7,"article-when-should-an-ai-say-i-dont-know-it-depends-on-the-language":10,"sections":34},{"siteName":4,"siteTagline":5,"publisherName":4,"contactEmail":6},"The Revision","Tech news, decoded.","editor@therevision.news",{"gaMeasurementId":8,"adsenseClientId":9},"G-ZW2MV82GYR","ca-pub-8533917693782264",{"article":11},{"id":12,"slug":13,"title":14,"dek":15,"body_md":16,"tags_json":17,"published_at":18,"created_at":19,"updated_at":20,"status":21,"review_note":22,"review_notes":23,"image_url":22,"persona_id":22,"persona_name":22,"section":24,"tags":25,"sources":29,"feedback":33,"feedback_at":22,"cost_usd":33,"total_tokens":33},4388,"when-should-an-ai-say-i-dont-know-it-depends-on-the-language","When Should an AI Say 'I Don't Know'? It Depends on the Language","A new study finds that making LLMs reason in English-even for low-resource language questions-sharply improves how well they gauge their own uncertainty.","Large language models are bad at knowing what they don't know-and that problem gets worse in non-English languages.\n\nResearchers ran the first large-scale benchmark of uncertainty estimation (UE) methods across 22 languages, from well-resourced ones like Spanish and Chinese to low-resource languages with sparse training data. They tested nine different UE approaches-methods that help a model decide when to answer versus when to abstain-across multiple model sizes and architectures, using two human-curated question-and-answer datasets. The core finding: asking a model to *reason* in English, even when the question is written in a low-resource language, closes most of the reliability gap between rich and sparse-data languages.\n\nThat result reframes where the problem actually lives. Models aren't failing to *understand* low-resource languages-they're failing to *generate* reliable uncertainty signals in them. The bottleneck is on the output side, not the input side, which means a simple prompting change can substitute for years of additional training data. The study also found that the best UE method depends on model scale: smaller models do better with open-box probability-based techniques, while larger models are better served by closed-box self-verbalized uncertainty, where the model states its own confidence directly.\n\nUncertainty estimation rarely gets the spotlight that benchmark scores or context windows do, but it matters for any deployment where a wrong confident answer is worse than no answer at all-think medical triage tools, legal research assistants, or multilingual customer support. The multilingual gap in UE has been a known blind spot; this paper offers a practical workaround while the field waits for models trained on more balanced language data.","[\"ai\",\"large-language-models\",\"multilingual\",\"research\"]","2026-07-08T04:00:00.000Z","2026-07-08T07:55:42.706Z","2026-07-08T07:55:45.660Z","published",null,[],"ai",[24,26,27,28],"large-language-models","multilingual","research",[30],{"name":31,"url":32},"arXiv cs.AI","https:\u002F\u002Farxiv.org\u002Fabs\u002F2607.06327",0,{"sections":35},[36,40,45,50,55,60,65,70,75,80,85,89,94,99],{"name":37,"slug":24,"count":38,"latest_published_at":39},"AI",2590,"2026-07-16T04:00:00.000Z",{"name":41,"slug":42,"count":43,"latest_published_at":44},"Security","security",294,"2026-07-15T19:59:48.000Z",{"name":46,"slug":47,"count":48,"latest_published_at":49},"Deals","deals",179,"2026-06-29T20:02:07.000Z",{"name":51,"slug":52,"count":53,"latest_published_at":54},"Policy","policy",158,"2026-07-16T00:02:48.000Z",{"name":56,"slug":57,"count":58,"latest_published_at":59},"Hardware","hardware",122,"2026-07-14T19:46:26.000Z",{"name":61,"slug":62,"count":63,"latest_published_at":64},"Consumer Tech","consumer-tech",93,"2026-07-13T13:20:48.000Z",{"name":66,"slug":67,"count":68,"latest_published_at":69},"Software","software",70,"2026-07-13T19:52:25.000Z",{"name":71,"slug":72,"count":73,"latest_published_at":74},"Science","science",66,"2026-07-10T10:29:37.000Z",{"name":76,"slug":77,"count":78,"latest_published_at":79},"Dev Tools","dev-tools",59,"2026-07-07T04:00:00.000Z",{"name":81,"slug":82,"count":83,"latest_published_at":84},"Gaming","gaming",41,"2026-07-09T04:00:00.000Z",{"name":86,"slug":87,"count":83,"latest_published_at":88},"Startups","startups","2026-06-29T20:55:50.000Z",{"name":90,"slug":91,"count":92,"latest_published_at":93},"General","general",29,"2026-07-10T22:28:58.000Z",{"name":95,"slug":96,"count":97,"latest_published_at":98},"Reviews","reviews",20,"2026-06-24T12:00:01.000Z",{"name":100,"slug":101,"count":102,"latest_published_at":103},"How-To","how-to",6,"2026-06-16T09:00:00.000Z"]