One shared brief
Every tool receives the same topic, learning goal, source facts, and one-minute target. We do not repair weak visuals after generation.
Visuals must teach
A high score requires visuals that explain the idea. Text that repeats the narration is not enough. Current visual scores are provisional manual reviews.
How the visual score is judged
Visual Explanation is a 0–10 manual score. We review whether the pictures teach the concept, not simply whether the video looks polished.
Accuracy
The visual model must represent the concept correctly and avoid misleading substitutions.
Mechanism
Visuals should show the causal, spatial, temporal, or quantitative relationships being explained.
Progression
The explanation should build step by step instead of becoming a disconnected montage.
Visual carry
The pictures should still contribute when the video is muted. Text cannot do all the teaching.
Relevance
Scenes must directly support the idea rather than serve as generic footage, avatar filler, or decoration.
Clarity
Diagrams, labels, and transitions should be readable, consistent, and easy to follow.
This score does not measure learner outcomes. Current scores are provisional manual assessments, not controlled comprehension studies.
Overall first, details second
The Explainer Index combines 45% visual explanation, 30% speed, and 25% cost. Separate tabs show each measure.
Workflow labels matter
One-shot, scene-by-scene, framework, and manual workflows stay labeled. We do not present manual work as automation.
Cost bases do not mix
An account charge, subscription amortization, and an API list price are different measurements. We label the basis. When actual usage is missing, a documented subscription calculation may be used if the arithmetic and limitation are shown beside the score.
Evidence stays attached
Each published result has a test evidence page with the shared benchmark brief, available output, review, pricing basis, and primary sources.
Changes stay visible
Method changes start a new comparison window. Errors go in the public corrections log.