Flat 2D explainer animation
Which model animates a flat cartoon character without breaking the art style?
How: One source frame (our fox host, Finn) and one motion prompt, sent to four models through fal.ai. Only the model changed. Each 5-second clip was scored 1 to 10 for style, motion and usability by an AI reviewer (Gemini Flash), then checked by eye.

Scores: style / motion / usable, out of 10.
Limits: One frame, one style. Since June, newer versions of these models have shipped. Scores are from an AI reviewer, so a tie at 9 means none of them failed, not that they are identical.