Kling 4.0 Flash vs Seedance 2.0 Fast
Two AI video models, one credit balance. Here is how they differ on price, length, resolution and sound. Every number is what Cirrela charges today.
Side by side
| Feature | Kling 4.0 Flash | Seedance 2.0 Fast |
|---|---|---|
| Made by | Kuaishou | ByteDance |
| Good at | Costs 40% less than Kling 4.0 and, unlike it, makes sound | Snappy drafts with audio — iterate in seconds |
| Price for a default video | 47 credits, 5 seconds at 720p with sound | 121 credits, 5 seconds at 720p with sound |
| Length | 5 to 20 seconds | 4 to 15 seconds |
| Sound | Made with the video | Made with the video |
| Best resolution | 720p | 720p (paid plans) |
| Start from a photo | Yes | Yes, but not of real people |
| Formats | 16:9, 9:16, 1:1, 21:9 | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 |
Run the same idea through both
Pick a prompt, make it with each model and keep the one you like. The clips were made with Cirrela to show the idea, not necessarily with these two models.
Anime opening sequence: a girl with a long red scarf sprints across a rooftop at sunset, cherry blossom petals swirling around her, dynamic camera sweep, hand-drawn cel shading, energetic rock music
Turquoise bay with small motorboats, mountains behind, sunset from a high vantage point, slow steady glide, gentle wind and water sound
Macro shot of molten dark chocolate pouring slowly over a fresh raspberry tart on a marble counter, glossy detail, soft window light, slow motion, high-end food commercial, gentle pouring sound
A woman in dark sunglasses drives a vintage convertible through a city at night, neon reflections sliding across the windshield, light rain, cinematic 35mm film look, soft engine sound
Which one should you pick?
Pick Kling 4.0 Flash if
- you want the lower price: 47 credits against 121 for a default video.
- you need longer shots, up to 20 seconds.
- you want to animate photos of real people, which it accepts.
Pick Seedance 2.0 Fast if
- its strength fits your idea: snappy drafts with audio — iterate in seconds.
Not sure? Make the same idea with both. Failed renders are refunded, and the Create button shows the exact price before you click.