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Both cover ai video & voice. Here is what separates them on price, billing, what you can take with you, and coverage.
| Runway | Synthesia | |
|---|---|---|
| Starting price | From $15 | From $19 |
| Pricing model | Free plan, paid tiers | Free plan, paid tiers |
| Free tier | Yes | Yes |
| Billing | Monthly or annual | Monthly or annual |
| Free trial | None | None |
| API | Yes | Yes |
| Data export | Not stated | Not stated |
| Their cut | Not stated | Not stated |
| Runs on | Web | Web |
| Covers | AI Video & Voice, Video Editing | AI Video & Voice, AI Content Tools |
| Works with | Nothing in particular | Nothing in particular |
| Founded | Not listed | Not listed |
| Reader rating | No reviews yet | No reviews yet |
| Live deals | None right now | None right now |
Generative video with an editor around it
Runway is where the frontier video models arrive with a timeline attached, so a generated shot can be trimmed, upscaled and cut against footage you filmed. Credits are the unit of everything, and they go faster than the plan names suggest. Read the credit cost per second before picking a tier, because the gap between plans is nothing like the gap between prices.
Our note
Work out how many seconds of your chosen model each plan buys before subscribing, because the answer is usually smaller than the credit numbers suggest. Runway is the right pick when the shot cannot be filmed. For talking-head video from a script, Synthesia and HeyGen cost less and do it better.
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Video from a script, read by an AI presenter
Synthesia turns typed words into a video of a person saying them, in a long list of languages, which is why it lives in training departments rather than on channels. For a creator it earns its place on explainer and localisation work, where reshooting in nine languages is not happening. Nobody is fooled into thinking the presenter is real.
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Ratings are the average of reviews readers left. The facts are stated by each tool’s own listing and are not verified by CloutStack. How we make money.