Syren: Make a Whole Video From One Prompt With Synthesia's New AI Video Agent
Synthesia's new Syren (in beta) writes a video as code and renders it while you watch: motion graphics, 3D, voiceover, music and avatars from one prompt, refined in a chat. How to start, what the free launch credits cover, what a video costs after that, and what it can't do yet
Most AI video tools give you a loose clip you still have to cut, voice and score yourself. Syren starts from one prompt and builds the whole video: the visuals, the voiceover, the music and, if you want one, an avatar.
It's from Synthesia, the company behind the AI avatar videos you've seen in corporate training. Everything below is from Synthesia's own page, read on October 9, 2026. I haven't run Syren myself, so treat the details as Synthesia's claims until you've tried it.
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Get the full setup steps + the copy-paste setup prompt
The rest of this guide (6 more sections, 1 copy-paste prompt) opens right here. The setup prompt, one paste into Claude that sets it all up, comes by email only. Use your real address.
Unlocks: Make your first Syren video · What one prompt can build · What it costs · Brand Kit: teaching it your style · Syren or Synthesia Studio? · +1 more
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