Synthesia is the fastest way to turn a script into a clean, multilingual talking-head video — no camera, studio, or reshoots. For training, onboarding, and explainer content that gets updated often, you edit the script and regenerate, which makes it the default for L&D and internal comms teams maintaining a video library.
Runway is a different tool: generative, art-directed video for B-roll, music videos, and stylised motion, with controls like Motion Brush and camera moves. It is built for creative footage, not presenters. Choose Synthesia for informational, presenter-led video; choose Runway for cinematic, generative clips.