Comparison
Where Runway still wins, where Viral Engine wins, and how to decide. Built for marketers running paid traffic to video, not just generic AI video shoppers.
Last updated 2026-04-30.
| Feature | Viral Engine | Runway |
|---|---|---|
| Free tier | 70 credits on signup | 125 credits one-time |
| Cheapest paid plan | $14/mo (4,000 credits) | $15/mo Standard (625 credits) |
| Video models | 5 (Kling, Luma, Wan, Minimax, Veo 3) | 1-2 (Gen-3 / Gen-4) |
| Image models | 6 (NB2, NB Pro, Imagen 4 x3, Flux) | Gen-3 image, integrations |
| Native synchronized audio | Yes (Veo 3) | No (separate audio tools) |
| Image-to-video | Yes (Kling, Luma, Veo 3) | Yes |
| Video extend / continuation | Yes (FFmpeg + prompt continuation) | Extend (Gen-3) |
| Public CLI | npm i -g viral-engine-cli | API only |
| AI chat agent that runs actions | Yes | No |
| Visual workflow builder | Yes | No |
| Long-form VSL pipeline | Yes (17-prompt VSL Studio) | No |
| Voice synthesis (TTS) | ElevenLabs + OpenAI | Lip sync, TTS limited |
| Green screen / Magic Mask | No | Yes |
| Motion brush | No | Yes (Gen-3) |
| Frames / video editor | FFmpeg compose + stitch | Full editor |
Runway's rotoscoping and masking tools are best-in-class. If your workflow includes isolating subjects from existing footage, Runway is the right tool.
Brush specific regions of an image to control motion direction and intensity. Viral Engine doesn't have an equivalent yet.
Runway has a real timeline editor for cutting, overlaying, and finishing video. Viral Engine handles compose and stitch via FFmpeg but doesn't have an interactive timeline.
5 video models in one place. Kling for cinematic, Luma for stylized, Veo 3 for premium with audio, Wan and Minimax for fast iteration.
Veo 3 generates video and matching soundtrack in one pass. No separate TTS, no sync issues.
17-prompt long-form video sales letter pipeline. Built for direct-response marketers running paid traffic.
6 image models bundled. Generate stills with Imagen 4 Ultra and animate with Kling in one workspace, no model context-switching.
ElevenLabs and OpenAI TTS native. Mix voiceover onto any video without leaving the platform.