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Leowei Liang

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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. · 7 citations
#artificial intelligence Preprint Sep 2026

FlowBalance: Verifier-Grounded Self-Improvement from On-Policy Reasoning Experience

FlowBalance, a verifier-grounded self-improvement method that learns a normalized distribution over complete responses, improves average performance over FlowRL on both Qwen3-4B and Qwen3-8B, while also improving training speed and stability, avoiding direct OPSD's response-length collapse, and exhibiting higher correc...

Zi-Xun Huang, Kishan Panaganti, Hai-Tao Mi et al. · 0 citations
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 Aug 2026

UI-Mate: Advancing Open-Weight Foundation GUI Agents with In-Context Demonstrations

Experiments show that UI-Mate-27B sets a new open-weight state of the art on general computer-use benchmarks, substantially improving long-horizon reliability, and makes three contributions to an environment-grounded training stack with in-context demonstration learning.

Zihan Ding, Long-Xu Dou, Qixiao Gao et al. · 1 citation

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