Runway Updates "Gen-4" — Generates Audio (Lip-Sync + Sound Effects) Alongside Video

What happened: The video-generation AI Runway updated Gen-4 to support "native audio," which creates sound at the same time as the video. It can generate lip-sync (mouth movements synced to the voice), ambient sound, and dialogue frame by frame.

Why it matters: It also added vertical, caption-ready templates for social media, plus hybrid integrations that combine with Veo and Seedance. It removes the hassle of dubbing silent clips after the fact.

What it means: Even individuals can more easily make ads and short videos end to end, from visuals all the way to audio. As an option on a different axis from Veo and Kling, it's worth using selectively depending on the purpose.