ResearchResearch paperAgents & Tool Use · Data & Datasets · Training & Scaling2 sources · Oct 13, 2026

Cowork-Gym: Synthesizing Interactive Work Environments at Scale

We introduce Cowork-Gym, a framework that synthesizes Cowork environments through a build-execute-revise loop that uses execution evidence and review feedback to validate and repair generated environments.

Key points

  • Cowork agents navigate dependencies across tools and files while adapting to changing user requirements and edits to shared workspaces.
  • Scaling such environments requires maintaining consistency among task objectives, executable resources, user behavior, and success criteria.
  • To capture realistic Cowork dynamics, a stateful user simulator responds to the agent's actions through dialogue and direct edits to the shared workspace.
  • We synthesize 64.9K environments across 14 application scenarios and use them to post-train 9B, 27B, and 35B-A3B Qwen models with supervised fine-tuning, reinforcement learning, and on-policy distillation.

Sources (2)

Extractive summary: sentences quoted from the sources.

Before this

  1. Oct 12, 2026Alibaba Qwen Introduces QwenGyre: Elastic Reinforcement Learning RL for XLong-Horizon Agents
  2. Oct 12, 2026Double-Rollout Reinforcement Learning with Sampling-based Reward Estimation
  3. Oct 12, 2026Look Back to Move Forward: Learning to Revisit for Agentic Compositional Image Generation
  4. Oct 12, 2026EventLens: Event-Structure Reinforcement Learning for Video Understanding
  5. Oct 11, 2026RSIPO: Recursive Self-Improving Policy Optimization for Agentic Reinforcement Learning via Skill-Policy Co-Evolution
  6. Oct 10, 2026VC-OPD: Visual Counterfactual On-Policy Distillation for Grounded Vision-Language Reasoning

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