An AI voice for TikTok, Reels and Shorts
Short-form video is decided in three seconds. An AI voice-over lets you post every day without recording, without showing your face and without a microphone. Here is how to get it right, from the hook to the vertical export.
Why creators use a synthetic voice on short formats
A TikTok, a Reel or a Short is a script of a few sentences that gets rewritten ten times. Re-recording after every change kills your posting rhythm. With an AI voice you change a word, regenerate, and the narration follows the edit rather than the other way round. It is also the answer for creators who would rather not lend their voice or their face: the voice becomes the account's signature, identical from one video to the next.
The engine is the same one used for long videos; we explain how it works on the AI voice generator page. What changes with short formats is the writing.
The hook: three seconds to keep them watching
The first sentence decides everything. Write it as a promise or a question, short, with no filler: "Three mistakes that sink your videos" rather than "Today I'm going to talk about". Test it on its own with the free trial, which reads two sentences with no account: if the hook doesn't stop you when you hear it, it won't stop anyone mid-scroll.
Pace and punctuation for a short script
A synthetic voice reads punctuation. A full stop gives a clean pause, a comma a breath, an exclamation mark lifts the end of the sentence. For a vertical format, keep sentences at eight to twelve words, one idea each, and cut connecting words. Digits are read correctly; spell numbers out only when you want to force a particular rhythm.
A 45-second script is roughly 700 characters including spaces. The counting rule is explained in the FAQ on character counting; you stay far below the 1,500-character limit per generation.
Choosing the tone
On short formats energy matters as much as clarity. In American English, Paul Cheerful grabs attention from the first second and Paul Confident suits product or opinion pieces; Paul Neutral holds up better for explanations and lists. Oliver and Jane offer the same range with a British accent, and Marie covers French. Listen to the samples on the voices page: every voice reads the same text, so you compare tone rather than script.
Keep one voice for the whole account. If you also publish long videos, the YouTube voice-over guide shows how to keep that consistency across formats.
Vertical export, captions and editing
Download the mp3, import it into CapCut, Premiere Rush, DaVinci or the platform's own editor, then cut your shots to the voice: the narration sets the tempo. Generate automatic captions from the audio; because the text is clean, the transcript is too. One generation per video is enough; for a series, keep one file per episode in your history, stored for 90 days (see how long audio is kept).
What the platforms require
TikTok, Instagram and YouTube ask you to flag realistic AI-generated content. Narration over footage you filmed yourself is usually not concerned, but check the current rules before you publish. In Europe, the AI Act requires informing the public when synthetic content could be mistaken for the real thing. Every mp3 produced by Aievalu carries a technical marker in its metadata. Imitating a real person without their consent is never allowed, whatever the platform.
What it costs per video
A 45-second video, about 700 characters, costs close to €0.06 with the €9 pack of 100,000 characters. In other words, one pack covers well over a hundred short videos and stays valid for twelve months. Subscriptions start at €4.99 a month for 60,000 characters if you post daily; the details are on the pricing page. Credits are only charged when the audio is produced, and commercial use is included with paid credits, as explained in the FAQ on usage rights.
Do you also produce audio episodes? The podcast voice-over guide covers intros and narrated episodes; for course modules, see voice-over for e-learning.