[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"branding":3,"analytics":7,"article-reasoning-ai-models-cooperate-more-selectively-study-finds":10,"sections":41},{"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":30,"tags":31,"sources":36,"feedback":40,"feedback_at":22,"cost_usd":40,"total_tokens":40},9513,"reasoning-ai-models-cooperate-more-selectively-study-finds","Reasoning AI Models Cooperate More Selectively, Study Finds","A new study finds reasoning AI models lean on strategy and reputation to cooperate, treating emotion as a secondary cue rather than ignoring it.","New research finds that upgrading an AI model to a 'reasoning' version changes how willing it is to cooperate with others, not just how well it argues.\n\nResearchers ran frontier AI models through the iterated prisoner's dilemma, varying a counterpart's reputation, strategy, and simulated facial-expression cues. In a first round with non-reasoning models (Claude 3.5, Gemini 2.0 Flash, GPT-4o), all three factors swayed cooperation decisions, echoing patterns long seen in human psychology experiments. A second round tested reasoning models (Claude 4.6, Gemini 3, GPT-5.2) and found a narrower process: these models leaned almost entirely on a counterpart's strategy and track record, and mostly stopped faking cooperation in a diagnostic test that had fooled the earlier, non-reasoning models. Emotional cues like simulated facial expressions still mattered, but only as a lower-priority tiebreaker behind reputation and strategy.\n\nThat hierarchy matters because companies are putting AI agents into negotiations, customer service, and other repeated interactions where trustworthiness is the whole point. The study also found reasoning models vary widely in endgame behavior: some kept cooperating through the final rounds, others reliably defected once the game was about to end, meaning two reasoning models with similar benchmark scores could act like very different negotiating partners.\n\nReasoning upgrades are usually sold as making models smarter. This research suggests they are also quietly rewiring how trustworthy a model acts when nobody is grading its homework.","[\"ai safety\",\"reasoning models\",\"game theory\",\"multi-agent ai\"]","2026-10-02T04:00:00.000Z","2026-10-02T22:41:03.018Z","2026-10-02T22:41:08.053Z","published",null,[24],{"id":25,"reviewer":26,"round":27,"reason":28,"status":29},"editor-r1","editor",1,"Fix the dek's claim that reasoning models act 'not' on emotional cues — the body explicitly says they still weigh emotional signals as a lower-priority cue rather than ignoring them, so the dek contradicts the body's own nuance.","resolved","ai",[32,33,34,35],"ai safety","reasoning models","game theory","multi-agent ai",[37],{"name":38,"url":39},"arXiv cs.AI","https:\u002F\u002Farxiv.org\u002Fabs\u002F2610.01222",0,{"sections":42},[43,46,50,54,59,63,67,72,77,82,87,92,97,102],{"name":44,"slug":30,"count":45,"latest_published_at":18},"AI",5887,{"name":47,"slug":48,"count":49,"latest_published_at":18},"Security","security",835,{"name":51,"slug":52,"count":53,"latest_published_at":18},"Policy","policy",438,{"name":55,"slug":56,"count":57,"latest_published_at":58},"Deals","deals",317,"2026-10-01T22:00:00.000Z",{"name":60,"slug":61,"count":62,"latest_published_at":18},"Hardware","hardware",199,{"name":64,"slug":65,"count":66,"latest_published_at":18},"Science","science",171,{"name":68,"slug":69,"count":70,"latest_published_at":71},"Consumer Tech","consumer-tech",155,"2026-10-01T19:54:10.000Z",{"name":73,"slug":74,"count":75,"latest_published_at":76},"Dev Tools","dev-tools",96,"2026-10-01T16:57:03.000Z",{"name":78,"slug":79,"count":80,"latest_published_at":81},"Software","software",93,"2026-09-30T21:41:11.000Z",{"name":83,"slug":84,"count":85,"latest_published_at":86},"Startups","startups",90,"2026-10-01T21:55:22.000Z",{"name":88,"slug":89,"count":90,"latest_published_at":91},"Gaming","gaming",53,"2026-10-02T02:50:39.000Z",{"name":93,"slug":94,"count":95,"latest_published_at":96},"General","general",50,"2026-09-30T21:37:54.000Z",{"name":98,"slug":99,"count":100,"latest_published_at":101},"Reviews","reviews",31,"2026-09-28T14:31:34.000Z",{"name":103,"slug":104,"count":105,"latest_published_at":106},"How-To","how-to",7,"2026-10-01T09:00:00.000Z"]