AI startup Runway on Monday released what it claims is one of the highest-fidelity AI-powered video generators yet. Called Gen-4, the model is rolling out to the company’s individual and enterprise customers. Runway claims that it can generate consistent characters, locations, and objects across scenes, maintain “coherent world environments,” and regenerate elements from different perspectives and positions within scenes. “Gen-4 can utilize visual references, combined with instructions, to creat...