In short
How they differ.
Worked out from the makers' own pages, read Oct 20, 2026. Prices change; check before you pay.
- Only Udio has a free plan.
- Udio also has a phone app.
- Stable Audio shipped an update more recently (May 20, 2026).
- Lawsuits or complaints on file: Stable Audio 1, Udio 2.
Side by side
The details.
| Stable Audio | Udio | |
|---|---|---|
| Made by | Stability AI · UK | Uncharted Labs (Udio) · US |
| What it says it is | — | — |
| Free plan | Not stated | Yes10 daily credits, plus a monthly limit of 100 credits that do not roll over |
| Plans | Not shown | Standard: not in US$Pro: not in US$ |
| Runs on | web, API, open weights | web, iOS |
| Latest update | Stable Audio 3.0 model family (small SFX, small, medium open weights; large via API), May 20, 2026 | Voices launched (early access for all subscribers), Sep 11, 2025 |
| Its terms | “as between you and Stability, you own outputs generated from the Core Models or Derivative Works”Who owns what you make · Stability AI Community License summary | — |
| Disputes | Getty Images v Stability AI (UK High Court, [2025] EWHC 2863 (Ch)) over use of Getty images to train Stable Diffusion (Stability's image model, not Stable Audio). Reuters: Getty 'largely lost its landmark lawsuit'.Getty was granted permission to appeal part of its claim on 2025-12-16 (LexisNexis, 2025-12-22); appeal outcome as of 2026-10 not verified. | Universal Music Group and Udio reached a 'compensatory legal settlement' and agreed to build a licensed creation and streaming platform; AP reported 'Udio immediately stopped allowing people to download songs they've created.'Settled (UMG). AP said the new subscription service 'will debut next year' (2026); launch not verified.Sony Music filed a second lawsuit against Udio in the U.S. District Court for the Southern District of New York after a judge denied its bid to add more tracks to the 2024 case; Variety: 'discovery for the case revealed 30,117 tracks were found among Udio's training datasets.'Pending. Variety: 'both Universal Music Group and Warner Music Group have settled their respective cases against Udio.' Sony has not settled. |
| Sources | Prices, Oct 20, 2026 · company-reported | Prices, Oct 20, 2026 · company-reported |
More comparisons