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Oct 5 – Oct 11, 2026

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47

HyperBrowseComp: A Multilingual and Multimodal Stress Test for Web-Browsing Agents

Alham Fikri Aji, Faiz Rizki Ramadhan, Zayd M. K. Zuhri +14 authors

We introduce HyperBrowseComp, a multilingual and multimodal browsing benchmark comprising 423 manually authored and human-validated questions across 13 languages, written by native or highly proficient speakers. Questions are designed to be extremely challenging. Each question targets a concise, publicly verifiable answer whose discovery requires locating obscure evidence, following multi-step clue chains, or inspecting heterogeneous sources such as videos, scanned documents, images, or maps. Easier questions are filtered out by evaluating them with models without internet access to reduce the likelihood that they can be answered with parametric knowledge alone. We evaluate several models using provider-native search and a shared external retrieval harness under a common agent protocol. To contextualize model performance and effort, we also conduct a human evaluation on a sample of the questions. HyperBrowseComp provides a challenging testbed for persistent information seeking across languages and evidence modalities, with difficulty arising from discovering and connecting evidence on the open web.

60HF ↗arXiv ↗
50

World Embedding Benchmark

Yiqi Liu, Ruifeng Yuan, Yang Wang +7 authors

Researchers benchmark how video embeddings encode physical properties across simulations, finding a trade-off between cross-modal alignment and quantitative recoverability, and show that retrieved physical references improve generated video fidelity.

57world modelsvideo generationHF ↗arXiv ↗
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