Free tools guides
These free tools answer the questions people ask before they spend credits: what a clip will cost, which model suits the shot, how one app's credits compare with another's and whether a character photo will work.
3 guides on Free tools
- AI video cost calculator: price per usable clip by modelWhat one usable AI video clip costs: Runway API rates for Kling, Veo, Wan and Seedance, plus retries, audio and reference-video billing. Checked 26 Oct 2026.
- AI video model comparison: pick the right model for your use caseFilter AI video models by audio, length, resolution, budget and references. Real per-10-second prices from Runway's API and MiniMax. Checked 26 Oct 2026.
- Best photo for image to video: check yours before you spend creditsCheck a photo for image-to-video before you pay: format, size, aspect range, blur and face size, with limits from Runway's docs. Runs in your browser.