HeyGen Video vs Kling 4.0 Flash
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 | HeyGen Video | Kling 4.0 Flash |
|---|---|---|
| Made by | HeyGen | Kuaishou |
| Good at | Sharp video with its own sound, at the lowest price per second | Costs 40% less than Kling 4.0 and, unlike it, makes sound |
| Price for a default video | 18 credits, 9 seconds at 768p with sound | 47 credits, 5 seconds at 720p with sound |
| Length | 5 to 15 seconds | 5 to 20 seconds |
| Sound | Made with the video | Made with the video |
| Best resolution | 1080p on a plan, 768p otherwise | 720p |
| Start from a photo | Yes | Yes |
| Formats | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 | 16:9, 9:16, 1:1, 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.
A lone silhouette faces an endless tunnel of square neon light, slow push-in, volumetric haze, deep cinematic hum
A lighthouse keeper watching a storm roll in, dark waves crashing on the rocks below, cinematic wide shot, wind and distant thunder
Luxury commercial: a sculpted glass perfume bottle slowly rotates on wet black stone, water droplets catching a thin beam of golden light, mist drifting, macro lens, no text, no logo, deep cinematic sound design
Polished 3D animation: a small friendly robot carefully assembles a glowing glass cube on a clean pastel studio set, soft global illumination, smooth camera orbit, playful mechanical sounds
Which one should you pick?
Pick HeyGen Video if
- you want the lower price: 18 credits against 47 for a default video.
- you need higher resolution, up to 1080p.
Not sure? Make the same idea with both. Failed renders are refunded, and the Create button shows the exact price before you click.