Video

How long can AI videos be?

Short answer

AI video models generate short clips, from a few seconds to about half a minute at a time. In Melon Cut Design the longest-running models make up to 30 seconds: Kling 4.0 makes 3 to 30, Wan 3.0 2 to 30 and Seedance 2.5 4 to 30. Veo 3.1 makes 4, 6 or 8 seconds. For a longer video, join several clips in a video editor.

Clip lengths by model, and what to do when you need more.

Lengths by model in Melon Cut

Social media videos are about 10 seconds by default - long enough for a hook and a message.

  • Kling 4.0: 3 to 30 seconds
  • Wan 3.0: 2 to 30 seconds
  • Seedance 2.5: 4 to 30 seconds
  • Veo 3.1: 4, 6 or 8 seconds
  • Gemini Omni Flash: 3 to 10 seconds
  • Grok Imagine: 1 to 15 seconds

Shorter often works better

Short vertical videos are watched while scrolling, so a clear message in the first seconds matters more than length. Make the length fit the idea, not the maximum.

Length and credits

A video uses 60 credits for every started 5 seconds, so longer clips use more credits. The studio shows the cost before it makes anything.

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