Lip Sync Apps for AI Avatars in 2026: 5 Compared

A lip sync app for AI avatars makes a face speak a script or an audio track. The five below all do that; what separates them is whose face it is (yours, from a photo, or a stock presenter), what the free plan keeps (watermark, downloads, length), and how you pay (by the second, by credits or by minutes).

Every price and limit below was read on the maker's own pricing page on 15 September 2026. For lip syncing any clip rather than an avatar, see free AI lip sync video generators; for a deeper look at voice cloning on the same platforms, see AI avatar platforms compared.

Percify builds the avatar from one photo of you and speaks with your cloned voice or any audio you upload. The talking video runs on InfiniteTalk: InfiniteTalk Fast ↗ costs 2 credits a second, about $2.53 a minute on Creator ($26 for 1,233 credits), and InfiniteTalk costs 4 credits a second at 480p and 6 at 720p. No plan adds a watermark and every plan, the free one included, carries commercial rights. It renders a video; it does not run an avatar live, and its library of ready-made presenters to pick from is small.

HeyGen ↗ is the pick for many stock presenters: 500+ on the free plan, which makes 3 videos a month of up to a minute, with 1 custom avatar and 30+ languages. Creator, at $29 a month, removes the watermark and lists 175+ languages and dialects.

Synthesia ↗ is built for company and training video, in 160+ languages. Its free Basic plan includes 1,200 credits a month with no card, but downloading your videos and removing the Synthesia logo start on Starter, shown to us at €26 a month or €16 billed yearly, with 125+ stock avatars.

D-ID ↗ animates photos into talking avatars. Its 14 day trial gives 3 minutes of video with a full screen watermark and a personal use licence; Lite ($4.70 a month billed yearly) still carries a D-ID watermark, and Pro ($16 a month billed yearly) adds a commercial licence.

Vidnoz ↗ has the largest stock set here, 1,900+ avatars, plus a lip sync tool ↗ that syncs an uploaded video to new audio. The free plan gives 30 credits a day, which its pricing page equates to 60 seconds, at 720p and up to 3 minutes a video, with its watermark.

• The avatar should be you: Percify, from one photo, with no watermark on any plan. HeyGen allows 1 custom avatar on its free plan.
• You want a stock presenter: HeyGen (500+), Vidnoz (1,900+) or Synthesia (125+ from Starter).
• Training or company video in other languages: Synthesia lists 160+ languages; HeyGen's Creator lists 175+.
• You want to test free before paying: Percify's free credits make a video with no watermark and HeyGen's free plan makes 3 a month; Synthesia's free plan does not include downloads, and D-ID's trial is watermarked.
• You need an avatar that talks live, in a call: that is a different product. Percify does not do it; Synthesia lists interactive avatars for practice conversations and D-ID lists Agents.

1. Download a free video and look at the corners. That is where a watermark sits.
2. Watch the lips on P, B and M. They must close on those sounds.
3. Check the last seconds of a long clip. Timing drifts over a long take.
4. Read the licence line. A personal use licence, as on D-ID's trial, is not a commercial licence.