Preface:
For a long time, Multimodal AI was viewed as an "amusing toy." It could generate beautiful anime illustrations or synthesize a funny video of Trump dancing, but when you tried to use it to make a continuous animation of even 3 minutes, or design a 3D asset importable to Unity, it exposed fatal flaws: character flickering, physics collapse, style drift.

In March 2025, with the concentrated explosion of Sora v2 (hypothetical version), Runway Gen-4, and Midjourney 3D, the critical point was breached. Multimodal AI is completing the evolution from "Generating Pixels" to "Simulating Physics." This article delves into the technological driving forces and industrial echoes behind this revolution.