WebRISE: Requirement-Induced State Evaluation for MLLM-Generated Web Artifacts
For researchers and developers of multimodal large language models (MLLMs) generating web artifacts, WebRISE provides a more rigorous evaluation method that captures functional correctness beyond visual quality.
WebRISE introduces a benchmark for evaluating MLLM-generated web artifacts using Interaction Contract Graphs (ICGs) to assess requirement-induced states and transitions. Across 442 tasks and 14 MLLMs, the best model achieves only 65.6% transition validity and 66.3% requirement coverage, with ICG-based scoring detecting state errors at 2-16x the rate of checkpoint-style evaluation.
Existing benchmarks for MLLM-generated web artifacts assess interaction through local evidence and miss the requirement-induced states and transitions that determine whether a page works. We introduce WebRISE, which compiles task requirements into Interaction Contract Graphs (ICGs) of observable states, user-intent transitions, and DOM/visual assertions for implementation-agnostic browser execution. WebRISE spans 442 tasks across five input modalities (Text, Markdown, Sketch, Image, Video), with 5,495 transitions and 5,271 requirement checks that separate user-stated functions from implicit product-level constraints. Across 14 MLLMs, even the strongest model reaches only 65.6% transition validity and 66.3% requirement coverage, and visual quality is no proxy for behavior (Qwen3.6-35B-A3B on Markdown: V=80.8 yet T=15.5). Video gives the strongest interaction signal (+10.6 pp implicit coverage over Text), while implicit constraints persist; defect injection shows ICG-based scoring detects state errors at 2-16x the rate of checkpoint-style evaluation.