ResearchResearch paperMultimodal Models · Agents & Tool Use · Reasoning & Planning2 sources · Oct 15, 2026

CoWorld Reasoner: Agentic Multimodal Reasoning with the Evolving Video World Model-Driven Harness

To support flexible visual imagination for diverse reasoning tasks, we introduce CoWorld Reasoner, an agentic framework that uses a VWM as a unified visual reasoning engine.

Key points

  • As Vision-Language Models (VLMs) advance, they are increasingly expected to perform spatiotemporal reasoning over motion, actions, and view changes beyond what the input images show.
  • Video World Models (VWMs) provide a natural unified engine for visual imagination by generating task-relevant visual content as additional evidence.
  • We further introduce VLM-VWM Harness Co-Evolution, which jointly revises tools, skills, and execution code based on execution feedback while keeping both model weights fixed.
  • Across seven benchmarks spanning spatial intelligence, temporal and causal reasoning, and perceptual reasoning, CoWorld Reasoner outperforms direct reasoning with the same VLM.

Sources (2)

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Before this

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  2. Oct 14, 2026The Design Space of Tri-Modal Masked Diffusion Models
  3. Oct 14, 2026SafeDriveVLA: Navigation-Conditioned World Model Dreaming for Conflict-Aware End-to-End Autonomous Driving
  4. Oct 14, 2026Glance Forcing: Making Bidirectional Diffusion Autoregressive at a Glance
  5. Oct 13, 2026UniW(A)M: A Unified Mixture-of-Experts Framework for World and World-Action Models
  6. Oct 13, 2026Gemini 4 Argon for Robotics

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