Published Jul 4, 2026By LongStories Team
What is the best AI video generator for long videos?
Quick Answer
There's no single "best," but for length, scene-based tools beat clip generators. Synthesia reaches 30 minutes; InVideo AI and LongStories.ai about 15. Pick by content: avatar explainers, marketing, or narrative and music.
What to look for beyond raw maximum length
For long videos, the category that matters is scene-based, script-to-video tools, since raw models (Veo 8s, Sora 15–25s) can't sustain length. Synthesia handles avatar videos up to 30 minutes; InVideo AI up to ~15; LongStories.ai up to 15 with consistent characters for narrative and music. Beyond max length, weigh consistency, a script-to-video workflow, and built-in voice and music. Match the tool to your vertical and test a short project first.