The original, still earning its chair
Runway was doing AI video before it was a category, and Gen-4.5 carries that studio DNA: world references. Define a character, a location, a prop once. Gen-4.5 holds them across shots with the discipline of a continuity department. For campaigns, series and brand universes where shot 14 must match shot 1, that's the core strength, delivered by the company with the longest professional editing heritage in the space.
Where Gen-4.5 fits the roster
Think of Runway Gen-4.5 as the agency-safe pick: consistent, controllable, predictable. The model you hand to a team that has to deliver the same world forty times. For maximum per-frame prompt control, Seedance 2.5 leads. For native audio, Veo 3.1. For volume value, Kling 3.0. Gen-4.5 sits mid-roster: priced for production, engineered for consistency. The versions table above has it live. Try your hardest continuity shot on it, then run the same brief through Seedance and keep whichever universe holds together better.
