WebDev
Expert-evaluated front-end builds paired with briefs, development trajectories, and rubric-based scores for aesthetics, motion, and interaction.
Overview
Copula WebDev Aesthetics is a structured training and evaluation corpus for frontend product aesthetics and complex interaction quality.
Each datapoint pairs a natural-language requirement with a runnable frontend product built from that brief, finished screenshots, and expert-authored dimensional scores.
The dataset trains and evaluates how well models translate design intent into high-quality frontend interfaces. Aesthetics and complex interaction quality — visual taste, motion and gestures, multi-step interaction flows, and fit with the intended use case — are among the hardest supervision signals to obtain.
Every sample carries an expert-authored scoring system refined to concrete criteria, designed to be rigorous, auditable, and reproducible.
Built for
- SFT and preference data for coding agents
- RL on runnable, gradeable front-end tasks
- Targeted evals of aesthetics and interaction quality
Featured samples
Aether IDE landing page
Interactive · Web
A ToB launch page for an agentic code editor, built from one brief. The hero runs a live agent that shows file diffs, compile failures and its own auto-correction loop; the SWE-bench matrix and pricing calculator are both interactive.
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