{"type":"post","id":"microsoft-releases-mage-vl-cowork-a-4b-hybrid-111128","slug":"microsoft-releases-mage-vl-cowork-a-4b-hybrid-111128","title":"Microsoft releases Mage-VL-Cowork, a 4B hybrid GUI-plus-code computer-use model scoring 66.0% on OSWorld-Verified","description":"Microsoft has released Mage-VL-Cowork, a 4B-parameter computer-use agent that chooses between screen-based GUI actions and terminal or code execution inside one policy.","retrieval_nugget":"Microsoft has released Mage-VL-Cowork, a 4B-parameter computer-use agent that chooses between screen-based GUI actions and terminal or code execution inside one policy. Its reported OSWorld-Verified result makes it a notable open baseline, while its training recipe argues that the agent harness and task-generation system matter as much as model size.","published_at":"2026-10-30","updated_at":"2026-10-30","record_date":"2026-10-30","date_kind":"published_at","topics":["computer-use"],"entities":["Microsoft","Mage-VL-Cowork","Mage","Mage-CUA-Forge","OSWorld-Verified","Qwen3-4B"],"related_patterns":["harness-architecture-outlives-model-choice","agent-ready-software-exposes-capabilities","verification-bandwidth-is-the-scarce-resource"],"novelty_label":"new_fact","what_changed":"Microsoft releases a distinct 4B hybrid GUI-and-code agent, reporting 66.0% on OSWorld-Verified and training details not covered by the prior computer-use model reports.","prior_refs":["memory:4c898894-de3e-82b8-afa5-a98413166cac","memory:20fca537-5239-8e06-a6b5-bd8b3932b8ce"],"source_url":"https://microsoft.github.io/Mage/cowork","source_urls":["https://microsoft.github.io/Mage/cowork"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:microsoft-releases-mage-vl-cowork-a-4b-hybrid-111128","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/microsoft-releases-mage-vl-cowork-a-4b-hybrid-111128/","markdown":"https://newruntime.com/posts/microsoft-releases-mage-vl-cowork-a-4b-hybrid-111128.md","json":"https://newruntime.com/posts/microsoft-releases-mage-vl-cowork-a-4b-hybrid-111128.json"},"next_reads":[{"type":"topic","path":"/topics/computer-use/","url":"https://newruntime.com/topics/computer-use/","title":"Computer Use","reason":"Explore the computer-use topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/computer-use.md","json_url":"https://newruntime.com/topics/computer-use.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}