You type what you want to see. HeyVid AI generates a video using whichever AI model you pick—there are a dozen options. It pulls together Sora, Kling, Runway, Veo and others. You're not stuck with just one engine's interpretation of your prompt.
Three ways to work: text becomes video from scratch. Static images turn into moving footage. Existing videos get reimagined in different animation styles. You can animate transitions between still frames. You can sync lip movements to audio. A social media manager could describe a product demo in text—then get back multiple versions rendered through different AI models to see which aesthetic fits the campaign.
Model selection matters more than you'd think. Kling V2.6 handles certain motion differently than Runway Gen-4 or Veo 3.1. HeyVid AI lets you switch between them without juggling separate subscriptions or learning new interfaces. Image generation works through thirteen models. AI music comes via Suno integration. It handles twenty-five languages.
Prompts max out at ten thousand characters (plenty for most scenarios—but could feel tight for complex narrative sequences). Duration options cap at fifteen seconds for individual clips. You'll work within a credit system for generation.
API access opens batch processing for developers who need to generate videos at scale. Webhook support means you can automate workflows without manual monitoring. Watermarks get removed if you need clean output for client deliverables.
