How to use Kling AI, the Kuaishou video model: what Kling 3.0 can do (native 4K, native audio, Motion Brush, storyboard), how it compares to Sora 2 and Veo 3.1, what it costs, and when to choose it for AI video.

VideoIntermediate

Runway

Runway Gen-4.5: The Production Standard for AI Video in 2026

Runway sits at #1 on the text-to-video Elo leaderboard and is the tool most ad agencies, studios, and music-video directors actually ship with. This guide covers Gen-4.5, Director Mode, Motion Brush, and the Runway API.

VideoIntermediate

Google Veo

Google Veo 3.1: The Video Model Most Likely to Replace Sora

Veo 3.1 leads the 2026 text-to-video benchmarks with native 4K, synchronized audio, and lip-sync. With Sora's app shut down and API ending in September, this is the model serious creators are migrating to.

VideoIntermediate

Sora

Sora 2 Guide: How It Worked and What to Use Instead

OpenAI discontinued Sora on April 26, 2026 and removes the API on September 24; it is not inside ChatGPT. How Sora 2 worked — prompts, storyboards, image-to-video — kept as a reference, plus which video model to use instead.