AI Video Tools

The AI video category contains three quite different products that are easy to confuse. Text-to-video generators create short clips from a description, usually a few seconds long, with no dialogue and limited control over what happens between the first and last frame. Avatar tools take a script and render a synthetic presenter speaking it, which is aimed squarely at training material, product explainers and localisation. AI-assisted editors do not generate footage at all — they speed up work on video you already filmed, by transcribing it and letting you cut the timeline by deleting words.

Decide which of the three you need before comparing prices, because they do not substitute for each other. If you are producing internal training in eight languages, an avatar tool is the answer and a clip generator is useless. If you are cutting a podcast recording, the reverse is true.

Across all three, the practical constraints are similar. Rendering consumes credits or minutes rather than being unlimited, so heavy iteration is expensive. Generated clips remain short, and stitching them into a longer sequence without visual inconsistency is still manual work. Synthetic presenters are recognisably synthetic to most viewers, which is fine for documentation and risky for brand storytelling. Anything involving a real person's likeness or voice needs explicit permission.

Reasonable starting points from this list: Descript is the most broadly useful if your work is editing real footage, since transcript-based cutting saves time immediately. Synthesia is the established choice for avatar-led corporate and training video. Runway sits in the generative camp with a free tier to test on, which makes it a low-commitment way to find out whether generated clips are good enough for your use case.