[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"branding":3,"analytics":7,"article-researchers-show-llm-providers-can-fake-reasoning-paths-to-overcharge":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},8335,"researchers-show-llm-providers-can-fake-reasoning-paths-to-overcharge","Researchers Show LLM Providers Can Fake Reasoning Paths to Overcharge","A new study shows AI providers could pad self-consistency reasoning paths to inflate bills without tripping standard audits.","AI providers billing by the reasoning path have a financial incentive to pad the count - and a new paper shows how easy that is to hide.\n\nResearchers built an algorithm that generates extra reasoning paths for a self-consistency setup - the technique where a model produces several answers and takes a majority vote - then reorders them so every single path looks necessary to reach that majority. Tested against instruct models from the Llama and Qwen families and reasoning models distilled from DeepSeek-R1 on math, science, and question-answering benchmarks, the algorithm consistently added paths that appeared essential rather than superfluous. The distribution of padded paths turned out to be heavy-tailed, meaning most of the time the padding is modest but occasionally it is severe. Even an auditor built specifically to catch this, tuned to keep its false-positive rate below 10 percent, still let a meaningful amount of overcharging through.\n\nThis matters because self-consistency has quietly become a standard way to make LLM answers more reliable, and per-path pricing means more paths equals more revenue for the provider - a conflict of interest nobody was really auditing until now. It is the metered-billing version of a taxi meter running while stuck in traffic: technically defensible, practically unverifiable by the passenger.\n\nNothing here proves any provider is actually doing this - only that the incentive exists and the audit trail is weaker than it looks.","[\"ai\",\"llm pricing\",\"self-consistency\",\"ai auditing\"]","2026-09-28T04:00:00.000Z","2026-09-29T00:49:22.581Z","2026-09-29T00:49:29.255Z","published",null,[],"ai",[24,26,27,28],"llm pricing","self-consistency","ai auditing",[30],{"name":31,"url":32},"arXiv cs.AI","https:\u002F\u002Farxiv.org\u002Fabs\u002F2609.30352",0,{"sections":35},[36,40,45,50,55,60,65,70,75,80,85,90,95,100],{"name":37,"slug":24,"count":38,"latest_published_at":39},"AI",4917,"2026-09-28T23:39:20.000Z",{"name":41,"slug":42,"count":43,"latest_published_at":44},"Security","security",768,"2026-09-29T01:20:00.000Z",{"name":46,"slug":47,"count":48,"latest_published_at":49},"Policy","policy",406,"2026-09-28T19:04:09.000Z",{"name":51,"slug":52,"count":53,"latest_published_at":54},"Deals","deals",272,"2026-09-28T17:42:46.000Z",{"name":56,"slug":57,"count":58,"latest_published_at":59},"Hardware","hardware",191,"2026-09-28T15:45:00.000Z",{"name":61,"slug":62,"count":63,"latest_published_at":64},"Science","science",154,"2026-09-28T13:19:18.000Z",{"name":66,"slug":67,"count":68,"latest_published_at":69},"Consumer Tech","consumer-tech",139,"2026-09-28T17:09:47.000Z",{"name":71,"slug":72,"count":73,"latest_published_at":74},"Software","software",91,"2026-09-25T20:55:00.000Z",{"name":76,"slug":77,"count":78,"latest_published_at":79},"Dev Tools","dev-tools",87,"2026-09-28T16:11:42.000Z",{"name":81,"slug":82,"count":83,"latest_published_at":84},"Startups","startups",80,"2026-09-28T17:50:28.000Z",{"name":86,"slug":87,"count":88,"latest_published_at":89},"General","general",49,"2026-09-28T16:44:57.000Z",{"name":91,"slug":92,"count":93,"latest_published_at":94},"Gaming","gaming",48,"2026-09-25T18:35:21.000Z",{"name":96,"slug":97,"count":98,"latest_published_at":99},"Reviews","reviews",31,"2026-09-28T14:31:34.000Z",{"name":101,"slug":102,"count":103,"latest_published_at":104},"How-To","how-to",6,"2026-06-16T09:00:00.000Z"]