SFX Engine
AI sound effect generator for audio producers, video editors, and game developers
About SFX Engine
SFX Engine generates royalty-free sound effects from text descriptions, with clips up to 47 seconds and a commercial license on every generation. It also offers background music, AI music transitions, a stem splitter, and an API, sold on credit-based plans.
Pros & Cons
Pros
- Commercial license included on every generated sound, with games and apps named explicitly
- Clips up to 47 seconds, long enough for short ambience beds
- Fast generation, usually 5 to 15 seconds per sound
- API access on every paid plan for batch or pipeline generation
- Low entry price for solo creators
Cons
- Not suited to melodies, full songs, or vocals
- No built-in looping control or engine plugin; you trim and import files yourself
- Credit math on plans is less transparent than a per-sound price
Key Features
Text-to-SFX generation
Describe a sound in plain text and get a generated effect, typically in 5 to 15 seconds.
Adjustable length
Set the sound effect length, up to 47 seconds per generation.
Unlimited variations
Regenerate the same prompt to get new takes of a sound for variation sets.
Commercial license by default
Every generated sound is royalty-free for personal and commercial projects, including games and apps.
Searchable sound library
Browse and reuse sounds other users have generated, organized by category and tag.
Background music and transitions
Generate background music beds and AI music transitions alongside sound effects.
AI stem splitter
Split existing audio into stems for reuse and editing.
API access
Generate sound effects programmatically on every paid plan, with full API access from Creator up.
Pricing
- 6,000 credits per year
- Sound effect generation
- Background music creation
- Studio quality output
- Priority email support
- API access
- $8/mo billed yearly ($96/year)
- 48,000 credits per year
- Sound effect generation
- Background music creation
- Studio quality output
- Priority support
- Full API access
- $20/mo billed yearly ($240/year)
- 180,000 credits per year
- Sound effect generation
- Background music creation
- Studio quality output
- Priority support
- Full API access
- Priority feature requests
- $72/mo billed yearly ($864/year)
- Custom pricing and features
- Contact sales
Best For
Indie game SFX
Generate impacts, ambience, creature, and UI sounds for a game without a sound designer, with commercial rights included.
Video editing
Create custom sound effects that match on-screen action instead of searching a stock library.
App sound design
Produce notification, button, and feedback sounds for mobile and web apps.
Automated audio pipelines
Use the API to generate sound effects programmatically for content or tooling pipelines.
