AgentPRM: Process Reward Models for LLM Agents via Step-Wise Promise and Progress.

@inproceedings{xi-2026-agentprm, author = {Zhiheng Xi and Chenyang Liao and Guanyu Li and Zhihao Zhang and Wenxiang Chen and Binghai Wang and Senjie Jin and Yuhao Zhou and Jian Guan and Wei Wu and Tao Ji and Tao Gui and Qi Zhang and Xuanjing Huang}, editor = {Hakim Hacid and Yoelle Maarek and Francesco Bonchi and Ido Guy and Emine Yilmaz}, title = {{AgentPRM: Process Reward Models for LLM Agents via Step-Wise Promise and Progress}}, booktitle = {{Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026}}, pages = {4184--4195}, publisher = {ACM}, year = {2026}, url = {https://doi.org/10.1145/3774904.3792551}, doi = {https://doi.org/10.1145/3774904.3792551} }