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SFX Engine vs FastH3 Omni

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

SFX Engine compared with FastH3 Omni
DetailSFX Engine logo SFX EngineFastH3 Omni logo FastH3 Omni
What it doesAI sound effect generator that creates royalty-free SFX from text descriptions in seconds AI video generation with synced audio from reference images and text prompts
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelPaid Paid
PricingStarter: $10/month or $8/month billed yearly for 500 credits. Creator: $25/month (50% off first month) or $20/month billed yearly for 4,000 credits. Pro: $90/month (50% off first month) or $72/month billed yearly for 15,000 credits. Each sound effect costs 3 credits. Browsing and downloading from th Not given
Key features
  • AI sound effect generation from text descriptions
  • Sound effects up to 47 seconds long
  • Background music creation
  • DJ transition maker
  • Stem splitter for music
  • Royalty-free commercial license included
  • Free public library of pre-made sounds
  • API access on all plans
  • Voiceover generation
  • 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
What makes it different
  • Generated sound effects are royalty-free for commercial use without licensing fees
  • Sounds created from text descriptions are unique to your project
  • Generate sounds in 5-15 seconds typically
  • Supports diverse use cases including games, video, podcasts and music production
  • Cancel anytime with no long-term commitment
  • Synced audio and video in a single generation pass
  • 8-step distilled model for fast generation in browser
  • No installation or GPU required
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)40 +1 (up) since last check4 +4 (up) since last check
Trust Flow (Majestic)260
Citation Flow (Majestic)420
Referring domains (Majestic)8500

4 details filled in for both companies.

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