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HFEPX Benchmark Hub

WebArena Ecosystem Benchmark Papers + Simulation Env

Updated from current HFEPX corpus (Apr 9, 2026). 14 papers are grouped in this benchmark page.

Read Full Context

Updated from current HFEPX corpus (Apr 9, 2026). 14 papers are grouped in this benchmark page. Common evaluation modes: Simulation Env, Llm As Judge. Most common rater population: Domain Experts. Common annotation unit: Trajectory. Frequently cited benchmark: ALFWorld. Common metric signal: cost. Use this page to compare protocol setup, judge behavior, and labeling design decisions before running new eval experiments. Newest paper in this set is from Mar 22, 2026.

Papers: 14 Last published: Mar 22, 2026 Global RSS

Researcher Quick Triage

Use this page for benchmark-matched method comparisons and eval protocol selection. Quality band: Medium .

High-Signal Coverage

100.0%

14 / 14 sampled papers are not low-signal flagged.

Replication-Ready Set

6

Papers with explicit benchmark + metric + eval mode fields.

Quality Controls

0.0%

0 papers report calibration/adjudication/IAA controls.

  • 13 papers explicitly name benchmark datasets in the sampled set.
  • 7 papers report at least one metric term in metadata extraction.
  • Start with the ranked shortlist below before reading all papers.

Primary action: Start with the top 2 benchmark-matched papers, then compare evaluation modes in the protocol matrix.

Why This Matters (Expanded)

Why This Matters For Eval Research

  • 28.6% of papers report explicit human-feedback signals, led by demonstration data.
  • simulation environments appears in 100% of papers in this hub.
  • ALFWorld is a recurring benchmark anchor for cross-paper comparisons in this page.
Protocol Notes (Expanded)

Protocol Takeaways

  • 1 sampled papers report both human evaluation and LLM-as-judge, supporting direct agreement checks.
  • Quality-control reporting is sparse in this slice; prioritize papers with explicit calibration or adjudication steps.
  • Rater context is mostly domain experts, and annotation is commonly trajectory-level annotation; use this to scope replication staffing.

Benchmark Interpretation

  • ALFWorld appears in 42.9% of hub papers (6/14); use this cohort for benchmark-matched comparisons.
  • WebArena appears in 35.7% of hub papers (5/14); use this cohort for benchmark-matched comparisons.

Metric Interpretation

  • cost is reported in 21.4% of hub papers (3/14); compare with a secondary metric before ranking methods.
  • accuracy is reported in 14.3% of hub papers (2/14); compare with a secondary metric before ranking methods.

Start Here (Benchmark-Matched First 6)

Ranked by protocol completeness so you can quickly find papers suitable for comparison studies.

Protocol Matrix (Top 10)

Compare protocol ingredients quickly before deep-reading full papers.

Paper Eval Modes Human Feedback Metrics Quality Controls
AgentHER: Hindsight Experience Replay for LLM Agent Trajectory Relabeling

Mar 22, 2026

Human Eval, Llm As Judge Demonstrations Precision, Pass@1 Not reported
Let's Think in Two Steps: Mitigating Agreement Bias in MLLMs with Self-Grounded Verification

Jul 15, 2025

Automatic Metrics, Simulation Env Pairwise Preference Accuracy Not reported
ReDAct: Uncertainty-Aware Deferral for LLM Agents

Apr 8, 2026

Simulation Env Not reported Cost, Token cost Not reported
When Users Change Their Mind: Evaluating Interruptible Agents in Long-Horizon Web Navigation

Apr 1, 2026

Simulation Env Critique Edit Not reported Not reported
Embodied Task Planning via Graph-Informed Action Generation with Large Language Model

Jan 29, 2026

Simulation Env Not reported Pass@1, Cost Not reported
Reward Prediction with Factorized World States

Mar 10, 2026

Llm As Judge, Simulation Env Not reported Success rate Not reported
Go-Browse: Training Web Agents with Structured Exploration

Jun 4, 2025

Simulation Env Not reported Success rate Not reported
Structured Agent Distillation for Large Language Model

May 20, 2025

Simulation Env Demonstrations Not reported Not reported
World-Model-Augmented Web Agents with Action Correction

Feb 17, 2026

Llm As Judge, Simulation Env Not reported Not reported Not reported
Hierarchy-of-Groups Policy Optimization for Long-Horizon Agentic Tasks

Feb 26, 2026

Simulation Env Not reported Not reported Not reported
Researcher Workflow (Detailed)

Checklist

  • Moderate: Papers with explicit human feedback

    Coverage is usable but incomplete (28.6% vs 45% target).

  • Gap: Papers reporting quality controls

    Coverage is a replication risk (0% vs 30% target).

  • Strong: Papers naming benchmarks/datasets

    Coverage is strong (100% vs 35% target).

  • Strong: Papers naming evaluation metrics

    Coverage is strong (50% vs 35% target).

  • Gap: Papers with known rater population

    Coverage is a replication risk (14.3% vs 35% target).

  • Strong: Papers with known annotation unit

    Coverage is strong (57.1% vs 35% target).

Strengths

  • Most papers provide measurable evaluation context (100% benchmarks, 50% metrics).
  • Contains both human-eval and LLM-as-judge protocols for head-to-head methodology comparison.
  • Agentic evaluation appears in 85.7% of papers.

Known Gaps

  • Only 0% of papers report quality controls; prioritize calibration/adjudication evidence.
  • Rater population is under-specified (14.3% coverage).
  • LLM-as-judge appears without enough inter-annotator agreement reporting.

Suggested Next Analyses

  • Compare papers that report both human_eval and llm_as_judge to quantify judge-human agreement drift.
  • Stratify by benchmark (ALFWorld vs WebArena) before comparing methods.
  • Track metric sensitivity by reporting both cost and accuracy.

Recommended Queries

Known Limitations
  • Only 0% of papers report quality controls; prioritize calibration/adjudication evidence.
  • Rater population is under-specified (14.3% coverage).
  • Narrative synthesis is grounded in metadata and abstracts only; full-paper implementation details are not parsed.
Research Utility Snapshot (Detailed)

Evaluation Modes

  • Simulation Env (14)
  • Llm As Judge (3)
  • Automatic Metrics (2)
  • Human Eval (1)

Human Feedback Mix

  • Demonstrations (2)
  • Critique Edit (1)
  • Pairwise Preference (1)

Top Benchmarks

  • ALFWorld (6)
  • WebArena (5)
  • OSWorld (3)
  • WebShop (3)

Top Metrics

  • Cost (3)
  • Accuracy (2)
  • Pass@1 (2)
  • Success rate (2)

Top Papers On This Benchmark

  • AgentHER: Hindsight Experience Replay for LLM Agent Trajectory Relabeling

    Liang Ding · Mar 22, 2026 · Citations: 0

    Demonstrations Human EvalLlm As Judge

    LLM agents fail on the majority of real-world tasks -- GPT-4o succeeds on fewer than 15% of WebArena navigation tasks and below 55% pass@1 on ToolBench (Zhou et al., 2024; Qin et al., 2024) -- yet every failed trajectory is routinely…

  • Let's Think in Two Steps: Mitigating Agreement Bias in MLLMs with Self-Grounded Verification

    Moises Andrade, Joonhyuk Cha, Brandon Ho, Vriksha Srihari, Karmesh Yadav · Jul 15, 2025 · Citations: 0

    Pairwise Preference Automatic MetricsSimulation Env

    We evaluate MLLM verifiers across web navigation, computer use, and robotics, spanning 13+ models, 28+ designs, and thousands of trajectories from diverse agents.

  • When Users Change Their Mind: Evaluating Interruptible Agents in Long-Horizon Web Navigation

    Henry Peng Zou, Chunyu Miao, Wei-Chieh Huang, Yankai Chen, Yue Zhou · Apr 1, 2026 · Citations: 0

    Critique Edit Simulation Env

    As LLM agents transition from short, static problem solving to executing complex, long-horizon tasks in dynamic environments, the ability to handle user interruptions, such as adding requirement or revising goals, during mid-task execution…

  • ReDAct: Uncertainty-Aware Deferral for LLM Agents

    Dzianis Piatrashyn, Nikita Kotelevskii, Kirill Grishchenkov, Nikita Glazkov, Ivan Nasonov · Apr 8, 2026 · Citations: 0

    Simulation Env

    Recently, LLM-based agents have become increasingly popular across many applications, including complex sequential decision-making problems.

  • Embodied Task Planning via Graph-Informed Action Generation with Large Language Model

    Xiang Li, Ning Yan, Masood Mortazavi · Jan 29, 2026 · Citations: 0

    Simulation Env

    We propose GiG, a novel planning framework that structures embodied agents' memory using a Graph-in-Graph architecture.

  • Go-Browse: Training Web Agents with Structured Exploration

    Apurva Gandhi, Graham Neubig · Jun 4, 2025 · Citations: 0

    Simulation Env

    To address this, we propose Go-Browse, a method for automatically collecting diverse and realistic web agent data at scale through structured exploration of web environments.

  • BrowseComp-$V^3$: A Visual, Vertical, and Verifiable Benchmark for Multimodal Browsing Agents

    Huanyao Zhang, Jiepeng Zhou, Bo Li, Bowen Zhou, Yanzhe Shan · Feb 13, 2026 · Citations: 0

    Automatic MetricsSimulation Env

    Multimodal large language models (MLLMs), equipped with increasingly advanced planning and tool-use capabilities, are evolving into autonomous agents capable of performing multimodal web browsing and deep search in open-world environments.

  • Structured Agent Distillation for Large Language Model

    Jun Liu, Zhenglun Kong, Peiyan Dong, Changdi Yang, Tianqi Li · May 20, 2025 · Citations: 0

    Demonstrations Simulation Env

    Large language models (LLMs) exhibit strong capabilities as decision-making agents by interleaving reasoning and actions, as seen in ReAct-style frameworks.

  • World-Model-Augmented Web Agents with Action Correction

    Zhouzhou Shen, Xueyu Hu, Xiyun Li, Tianqing Fang, Juncheng Li · Feb 17, 2026 · Citations: 0

    Llm As JudgeSimulation Env

    To address these challenges, we propose WAC, a web agent that integrates model collaboration, consequence simulation, and feedback-driven action refinement.

  • Hierarchy-of-Groups Policy Optimization for Long-Horizon Agentic Tasks

    Shuo He, Lang Feng, Qi Wei, Xin Cheng, Lei Feng · Feb 26, 2026 · Citations: 0

    Simulation Env

    Group-based reinforcement learning (RL), such as GRPO, has advanced the capabilities of large language models on long-horizon agentic tasks.

  • SELAUR: Self Evolving LLM Agent via Uncertainty-aware Rewards

    Dengjia Zhang, Xiaoou Liu, Lu Cheng, Yaqing Wang, Kenton Murray · Feb 24, 2026 · Citations: 0

    Simulation Env

    Large language models (LLMs) are increasingly deployed as multi-step decision-making agents, where effective reward design is essential for guiding learning.

  • Mobile-Agent-v3.5: Multi-platform Fundamental GUI Agents

    Haiyang Xu, Xi Zhang, Haowei Liu, Junyang Wang, Zhaozai Zhu · Feb 15, 2026 · Citations: 0

    Simulation Env

    The paper introduces GUI-Owl-1.5, the latest native GUI agent model that features instruct/thinking variants in multiple sizes (2B/4B/8B/32B/235B) and supports a range of platforms (desktop, mobile, browser, and more) to enable cloud-edge…

  • R-WoM: Retrieval-augmented World Model For Computer-use Agents

    Kai Mei, Jiang Guo, Shuaichen Chang, Mingwen Dong, Dongkyu Lee · Oct 13, 2025 · Citations: 0

    Simulation Env

    Large Language Models (LLMs) can serve as world models to enhance agent decision-making in digital environments by simulating future states and predicting action outcomes, potentially eliminating costly trial-and-error exploration.

  • Reward Prediction with Factorized World States

    Yijun Shen, Delong Chen, Xianming Hu, Jiaming Mi, Hongbo Zhao · Mar 10, 2026 · Citations: 0

    Llm As JudgeSimulation Env

    We evaluate on RewardPrediction, a new benchmark dataset spanning five diverse domains and comprising 2,454 unique action-observation trajectories with step-wise ground-truth rewards.

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