Nobody tells you what 30 AI videos per month actually costs.** You open Runway's pricing page. It says "125 credits included". You open Kling's page. It says "monthly tokens". Luma says "generations per day". None of them define what a "credit" translates to in dollars for your specific workflow. So you guess. You launch a project. Three weeks later you get a bill that's 3x what you planned. I hit this problem enough times that I built a calculator to stop guessing: AI Video Studio Cost Planner . Here's the math behind it. How each platform actually charges you The three platforms have completely different credit models: Runway Gen-3 Alpha Charges per second of video generated. Standard rate: ~10 credits/second. At $0.01 per credit, that's $0.10/second. A 10-second clip costs $1. Sounds fine — until you're generating 50 clips for a client project. Add 4K upscaling and that rate doubles. That's the part nobody reads in the pricing page.…