Synthesia builds presenter videos from a script: an AI avatar, a voice, translation into many languages, a brand kit and analytics, all aimed squarely at corporate training and internal comms. Montaj is a Synthesia alternative only for people who wanted something else entirely. A real recording, filmed by you, finished on your device with subtitles, tightening and clean audio.
You produce training or internal communications at company scale, need the same module in several languages, and need brand control, collaboration and reporting around it.
Choose Montaj if…
You are the person on camera, the clip is vertical, and the job is captions, dead air and audio.
Montaj vs Synthesia at a glance
Feature
Montaj
Synthesia
Where your video goes
Nowhere. It stays on your device
Generated and stored in Synthesia's cloud platform
Not the problem it solves, the presenter is generated
Works offline
Fully offline after the one-time model download
A cloud platform, it needs a connection
Price
Free today, no watermark
Free plan with monthly limits; paid plans and Enterprise
The honest summary: Synthesia wins the corporate video pipeline outright , avatars, translation, brand governance, analytics , none of which Montaj attempts. Montaj wins the single real take, finished on the device it was filmed on.
Buyer
Why a Synthesia alternative usually is not another avatar tool
Synthesia is bought by organisations, and it shows in every part of it: brand kits so nobody goes off-template, collaboration so a module can be reviewed, analytics so somebody can report on it, translation so the same content ships everywhere.
Montaj has none of that furniture because it is not sold to a company. It assumes one person, one clip, and a deadline measured in minutes.
Winner: Synthesia for the company; Montaj for the individual
Real footage
Synthesia vs Montaj when the person on screen is you
An avatar never stumbles, never records in a noisy room and never leaves a four-second gap while it thinks. That is the appeal, and it is also why Synthesia has no reason to build the tools a real take needs:
On-device transcription and word-by-word karaoke subtitles, editable inline.
One-tap silence removal across the whole take, reversible and non-destructive.
Neural audio denoising tuned for voice, running on the device.
A real timeline for trims, reordering and B-roll layers with split-screen.
Winner: Montaj. A generated presenter has no take to fix
Honest limits
Where Synthesia wins
Avatars, translation, brand governance, collaboration and analytics: Montaj offers none of these and is not built to. For a company producing video that has to be consistent across teams and languages, this comparison is over before it starts.
Montaj is vertical 9:16 only, single-user, and does not yet save projects, closing one loses it.
Winner: Synthesia, corporate scale
The verdict
Synthesia is enterprise software and should be judged as such: if your job is producing training modules that must exist in a dozen languages with the brand locked down and someone reporting on completion rates, buy it. Montaj is not remotely in that conversation. The only people who should read past the first paragraph here are the ones who arrived searching for AI video and actually meant their own phone footage.
For avatar-led corporate video, the alternatives are other avatar platforms and Montaj is not one. For finishing footage of a real person on your device, Montaj is the strongest Synthesia alternative, free and with nothing uploaded.
Can Montaj create an AI presenter?
No. Montaj has no avatars, no synthetic voice and no script-to-video. It edits footage of real people.
Does Synthesia translate videos?
Yes, into many languages, which is a large part of why companies buy it. Montaj does not translate.
Is there a free video editor for a single creator?
Montaj is free today with no watermark and no export limit, and it runs on your device rather than a cloud platform.
