Runway vs Kling: Which AI Video Generator Is Cheaper?
Side by side: what Runway and Kling give you for free, what they charge to start, and whether they stamp a watermark. Sisif sits in the third column so you can see the free option too.
Runway starts at $12/mo and Kling at $5.99-7.99/mo. On the free tier, Runway watermarks free exports and Kling watermarks free exports. Both are closed models you rent by the credit. Sisif runs the open Wan2.2 weights, gives you 35 credits on signup and never adds a watermark.
35 free credits • No credit card required
Runway vs Kling vs Sisif
| Feature | Runway | Kling | Sisif |
|---|---|---|---|
| Free tier | 125 one-time credits (no refresh) | ~66 credits/day (~6 clips) | 35 credits, no card |
| Watermark on free output | Yes | Yes | None |
| Entry paid plan | $12/mo | $5.99-7.99/mo | $10/month (100 credits) |
| Cost per second | $0.25-0.50 | ~$0.09 | 1.5 to 6 credits per second |
| Model weights | Closed | Closed | Open (Wan2.2 TI2V-5B) |
Verdict
Kling is cheaper to start ($5.99-7.99/mo against $12/mo) and refreshes free credits daily, about six clips a day. Runway gives 125 credits once. Both watermark free exports. Sisif's free credits do not refresh either, but there is no watermark on any export and no card at signup.
How It Works
Describe Your Idea
Write what you want to show in your video in simple text
AI Generates the Video
Our artificial intelligence creates your video in minutes
Download and Share
Video ready to publish on any platform
Frequently Asked Questions
Which is cheaper, Runway or Kling?
Runway's entry plan is $12/mo and Kling's is $5.99-7.99/mo. Sisif is free to start with 35 credits and no card, and paid plans begin at $10/month.
Do Runway and Kling watermark free videos?
Runway watermarks free exports. Kling watermarks free exports. Sisif never adds a watermark, on any plan.
Is there a free alternative to Runway and Kling?
Yes. Sisif runs the open Wan2.2 model and gives every new account 35 free credits. Describe the clip, render it in portrait, download an MP4 with no watermark.
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No credit card required • 35 free credits