FastH3 Omni vs Seed Audio

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

FastH3 Omni compared with Seed Audio
Detail	FastH3 Omni	Seed Audio
What it does	AI video generation with synced audio from reference images and text prompts	AI text to speech and voice generator for realistic, multilingual speech
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Paid	Freemium
Pricing	Not given	Basic: $4.95/month billed yearly (was $9.9/month), includes 960,000 TTS characters/year and 9,600 voice credits. Pro: $14.95/month billed yearly (was $29.9/month), includes 4,200,000 TTS characters/year and 42,000 voice credits. Enterprise: $24.95/month billed yearly (was $49.9/month), includes 9,60
Key features	Up to 9 reference images per generation Up to 3 audio references per generation 5 fixed video lengths from 5.875 to 14.375 seconds 4 aspect ratios (16:9, 1:1, 9:16, 4:3) 24 fps frame rate Real-time rendering for first 3 reference images First and last frame control MP4 output saved for 7 days Text prompt with reference naming Automatic credit refund for failed generations	Up to 1,000 characters per conversion on paid plans Voice model creation and storage
What makes it different	Synced audio and video in a single generation pass 8-step distilled model for fast generation in browser No installation or GPU required	Fast generation allows instant iteration and regeneration of single lines Shared credits across text to speech, voice design, and voice cloning Consent-first voice cloning with private voice models No infrastructure management required, API handles all production needs
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	4 +4 (up) since last check	27 −1 (down) since last check
Trust Flow (Majestic)	0	6
Citation Flow (Majestic)	0	24
Referring domains (Majestic)	0	101

4 details filled in for both companies.

More alternatives to FastH3 Omni More alternatives to Seed Audio