SFX Engine vs Seedream Pro

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 Seedream Pro
Detail	SFX Engine	Seedream Pro
What it does	AI sound effect generator that creates royalty-free SFX from text descriptions in seconds	ByteDance Seedream AI image and Seedance video generator in one studio
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Paid	Freemium
Pricing	Starter: $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	Free: 10 credits for new accounts, valid 30 days. Basic: $8.3/month (billed yearly at $100/year, 2,400 credits per 12 months). Pro: $30/month (billed yearly at $360/year, 21,600 credits per 12 months). Business: $49.9/month (billed yearly at $599/year, 48,000 credits per 12 months). One-time Credit
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	Five Seedream versions in one studio: 5.0 Pro, 5.0 Lite, 4.5, 4.0 and 3.0 Text-to-image generation with prompts up to 5,000 characters Image editing with up to 14 reference images Layer decomposition to split images into separate elements Up to 4K resolution on Basic and higher plans Eight aspect ratios including ultrawide 21:9 banners Seedance video generation with seven versions and motion generation Commercial use support through Business-level access Free plan with 10 credits for 30 days, no credit card needed
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	Access to five Seedream versions in one interface without switching platforms Up to 14 reference images for image editing, the largest edit input among versions Integrated Seedance video studio to turn stills into clips without leaving the platform Transparent credit system showing cost before generation with automatic refund on failure
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)	40 +1 (up) since last check	30 +1 (up) since last check
Trust Flow (Majestic)	26	4
Citation Flow (Majestic)	42	28
Referring domains (Majestic)	850	122

5 details filled in for both companies.

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