Compare AI tools

	Stable Audio A	Suno S	Udio A	Sora A
Tagline	Stability AI's open audio model. Loops + SFX + background.	Prompt to full song with vocals, instruments, the works.	Suno's main rival. Often better on instrumental nuance.	OpenAI's video model. Long clips, cinematic quality.
Category	audio	audio	audio	video
Pricing	Free + $12/mo Pro + enterprise	Free + $10/mo + $30/mo	Free + $10-$30/mo	Included with ChatGPT Plus/Pro
Best for	Game developers, podcasters needing SFX, video creators needing background music.	Jingles, intros, demos, sketches, personal use.	Musicians comparing AI outputs. Anyone who didn't click with Suno.	ChatGPT subscribers experimenting with cinematic shots.
Strengths	Open-weight model available Great for loops + game audio + SFX Commercial-use clarity	Real songs with real lyrics v4 is very good Quick turnaround	Strong instrumentals + genre fidelity Extend/remix features Good lyric understanding	Up to 20-sec clips at 1080p Strong physics + scene composition Storyboard feature for longer narratives Remix existing videos
Weaknesses	Not for full songs with vocals Shorter generation limits	Copyright gray zone Audio quality behind studio	Same copyright gray zone as Suno Ecosystem smaller	Stricter content policy than competitors Hit-or-miss on complex motion Text-in-video still struggles
Kai's verdict	A-tier for its niche. Different use case than Suno — SFX and loops, not songs.	S-tier in its category. The first AI music tool I'd actually listen to.	A-tier. Genuinely different vibe from Suno — worth trying both for a month.	A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
Link	Open →	Open →	Open →	Open →