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ProCUA-SFT Technical Report

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A 3.1M sample synthetic dataset for training computer-use agents, significantly improving performance on desktop interaction tasks.</p>\n","updatedAt":"2026-06-17T02:11:11.215Z","author":{"_id":"6039478ab3ecf716b1a5fd4d","avatarUrl":"https://cdn-avatars.huggingface.co/v1/production/uploads/6039478ab3ecf716b1a5fd4d/_Thy4E7taiSYBLKxEKJbT.jpeg","fullname":"taesiri","name":"taesiri","type":"user","isPro":true,"isHf":false,"isHfAdmin":false,"isMod":false,"followerCount":319,"isUserFollowing":false}},"numEdits":0,"identifiedLanguage":{"language":"en","probability":0.8927692174911499},"editors":["taesiri"],"editorAvatarUrls":["https://cdn-avatars.huggingface.co/v1/production/uploads/6039478ab3ecf716b1a5fd4d/_Thy4E7taiSYBLKxEKJbT.jpeg"],"reactions":[],"isReport":false}}],"primaryEmailConfirmed":false,"paper":{"id":"2606.17321","authors":[{"_id":"6a320237bc818ff14e453d77","name":"Jaehun Jung","hidden":false},{"_id":"6a320237bc818ff14e453d78","name":"Ximing Lu","hidden":false},{"_id":"6a320237bc818ff14e453d79","name":"Brandon Cui","hidden":false},{"_id":"6a320237bc818ff14e453d7a","name":"Muhammad Khalifa","hidden":false},{"_id":"6a320237bc818ff14e453d7b","name":"Shaokun Zhang","hidden":false},{"_id":"6a320237bc818ff14e453d7c","name":"Hao Zhang","hidden":false},{"_id":"6a320237bc818ff14e453d7d","name":"Jin Xu","hidden":false},{"_id":"6a320237bc818ff14e453d7e","name":"Amala Sanjay Deshmukh","hidden":false},{"_id":"6a320237bc818ff14e453d7f","name":"Karan Sapra","hidden":false},{"_id":"6a320237bc818ff14e453d80","name":"Andrew Tao","hidden":false},{"_id":"6a320237bc818ff14e453d81","name":"Yejin Choi","hidden":false},{"_id":"6a320237bc818ff14e453d82","name":"Jan Kautz","hidden":false},{"_id":"6a320237bc818ff14e453d83","name":"Mingjie Liu","hidden":false},{"_id":"6a320237bc818ff14e453d84","name":"Yi Dong","hidden":false}],"publishedAt":"2026-06-15T00:00:00.000Z","submittedOnDailyAt":"2026-06-17T00:00:00.000Z","title":"ProCUA-SFT Technical Report","submittedOnDailyBy":{"_id":"6039478ab3ecf716b1a5fd4d","avatarUrl":"https://cdn-avatars.huggingface.co/v1/production/uploads/6039478ab3ecf716b1a5fd4d/_Thy4E7taiSYBLKxEKJbT.jpeg","isPro":true,"fullname":"taesiri","user":"taesiri","type":"user","name":"taesiri"},"summary":"Training computer-use agents (CUAs) -- models that interact with graphical desktops through screenshots and keyboard/mouse actions -- requires large-scale, diverse trajectory data collected in full desktop environments. 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Papers
arxiv:2606.17321

ProCUA-SFT Technical Report

Published on Jun 15
· Submitted by
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on Jun 17
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Abstract

Training computer-use agents using a large-scale synthetic dataset with automated task generation and verification achieves significantly improved performance on desktop interaction benchmarks.

Training computer-use agents (CUAs) -- models that interact with graphical desktops through screenshots and keyboard/mouse actions -- requires large-scale, diverse trajectory data collected in full desktop environments. The largest public resource, AgentNet (22.5K human trajectories), leads to negative transfer when used for supervised fine-tuning (SFT): continuing training UI-TARS 7B on AgentNet causes OSWorld success rate to fall from 26.3% to 8-10%. We present ProCUA-SFT, a dataset of 3.1M step-level SFT samples distilled from 93K synthetic trajectories across 2,484 application combinations. The dataset is produced by a fully automated pipeline that (i) synthesizes grounded tasks on live desktops seeded with real-world content -- 912 spreadsheets from SpreadsheetBench, approximately 10K permissively-licensed presentations from Zenodo10K, and multi-application OSWorld configs -- and (ii) verifies each task's feasibility through binary precondition checking before rollout. A single VLM (Kimi-K2.5) serves as goal generator, precondition judge, and trajectory executor, eliminating planner-actor capability gaps. Each trajectory is expanded into step-prefix samples that exactly reproduce the context layout seen at inference time. Fine-tuning UI-TARS 7B on ProCUA-SFT for one epoch yields 45.0% on OSWorld -- an 18.7 percentage-point improvement over the base model and over 35% above AgentNet-trained counterparts. A subset of ProCUA was incorporated into the training data for the Nemotron 3 Nano Omni model, contributing to its computer-use capabilities.

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A 3.1M sample synthetic dataset for training computer-use agents, significantly improving performance on desktop interaction tasks.

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