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Ru-Han Wang

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#artificial intelligence Preprint Sep 2026

T1: Terminal Agent Reinforcement Learning for Long-Horizon Tasks

T1, a Mixture-of-Experts model of 122B total trained with reinforcement learning, operating a real shell in a cloud sandbox for up to 300+ tool-call turns per task, rewarded by executing each task's own verifier by executing each task's own verifier.

Jun-Yao Yang, Yu-Cheng Shi, Zhong-Zhi Li et al. · 1 citation
Preprint Aug 2026

Recursive Synthesis for Long-Horizon Terminal Tasks

Recursive Synthetic Terminal Tasks (RST) is presented, a recursive verified synthesis framework for constructing long-horizon terminal-agent tasks at scale and shows no ceiling, indicating that the process can continue well beyond the scale reported here.

Zhongzhi Li, Yucheng Shi, Zongxia Li et al. · 5 citations
Jul 2026

Long-Horizon-Terminal-Bench: Testing the Limits of Agents on Long-Horizon Terminal Tasks with Dense Reward-Based Grading

This work introduces Long-Horizon-Terminal-Bench, a terminal benchmark of 46 long-horizon tasks spanning nine categories, including experiment reproduction, software engineering, multimodal analysis, interactive games, and scientific computing, and analyzes failure modes and error patterns to support future progress on...

Zongxia Li, Zhongzhi Li, Yucheng Shi et al. · 11 citations · ⚡2
Preprint Jul 2026

Harness Handbook: Making Evolving Agent Harnesses Readable,Navigable, and Editable

The capability of a modern AI agent depends not only on its foundation model but also on its harness, which constructs prompts, manages state, invokes tools, and coordinates execution. As models, APIs, environments, and requirements evolve, the harness must be continually modified. Before such a change can be made, a d...

Ruhan Wang, Yucheng Shi, Zongxia Li et al. · 7 citations

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