LongWebBench: Evaluating Structural and Functional Webpage Generation in Long-Horizon Settings

In three linesLongWebBench is a benchmark evaluating long-horizon webpage generation by vision-language models. It contains 490 real-world pages for structural evaluation and 507 goal-oriented interaction tasks over 129 pages. Experiments show structural fidelity degrades with webpage length, and visually plausible generations often fail to support multi-step executable interactions.

Summary generated by Claude — human-verified