How we verified this
We don’t run generation tests, we read the fine print. For Riffusion (Google Flow Music) we read the free tier’s own terms, its commercial-use, watermark and attribution rules, then confirmed the cheapest plan that lifts them against the official pricing page, cross-checked across multiple current sources. The watermark and license clauses below are paraphrased from those terms, and the quality score is our editorial read of the tool, not a lab benchmark. Everything here was last verified June 22, 2026.
Watermark & licensing, the part that decides monetization
Why the free plan fails: Riffusion's free tier is licensed for non-commercial use only and outputs carry an embedded AI watermark; commercial rights require a paid plan, and the live terms are now Google-gated and not directly fetchable.
Watermark
Third-party and post-acquisition reporting states that Riffusion / Google Flow Music outputs carry Google's SynthID watermark, an embedded (largely inaudible) provenance mark rather than an audible tag. The harder blocker for monetization is the license itself: free output is non-commercial. We could not load the live Google-era terms to confirm the SynthID detail verbatim from a first-party page, so this is flagged as not primary-confirmed.
License
The last directly-quotable Riffusion terms granted users the right to "use the Output for any lawful, non-commercial purpose on a royalty-free basis, provided that your use does not transfer to you ownership of any Intellectual Property Rights in the Service," and barred using the Output to train your own models or reselling it unmodified (for example as a sample pack). That makes free-tier monetization a breach. Commercial use is reported to begin on the paid Starter tier (around $6/mo). The complication for verification: riffusion.com now 301-redirects through producer.ai to flowmusic.app (Google Flow Music), which returns 403 to our fetch, so the current Google-era commercial clauses cannot be primary-confirmed and are marked Unclear. Separately, the open-source Riffusion model is MIT-licensed, which permits commercial use of locally-run outputs, that is a different legal object from the hosted service.
“You may use the Output for any lawful, non-commercial purpose on a royalty-free basis, provided that your use does not transfer to you ownership of any Intellectual Property Rights in the Service.”
Pros & cons
Pros
- Strong, fast prompt-to-music quality with vocals and instrumentals
- An open-source MIT-licensed model exists for unrestricted local self-hosting
- A low-cost paid tier (reported around $6/mo) adds commercial rights
- Now backed by Google infrastructure after the Flow Music acquisition
Cons
- Free output is non-commercial only, you can't monetize it without paying
- Outputs carry Google's SynthID watermark
- Live terms and pricing now redirect to Google-gated pages we can't verify verbatim
- The terms transfer no ownership of IP in the service to you
Pricing, which plans are actually safe
| Plan | Price | What you get | Monetization |
|---|---|---|---|
| Free | $0 | Daily top-up credits in the browser app; non-commercial use only; SynthID watermark | Not safe |
| Starter | Reported around $6/mo (live pricing is Google-gated; confirm at checkout) | More credits plus commercial rights for monetized and client work | Safe |
Affiliate link, commission costs you nothing and never changes a verdict.
Alternatives we’ve tested
Suno8.5
AI music · AI songs, free tier non-commercial
Free-tier songs are licensed for personal, non-commercial use only and must credit Suno, so you cannot monetize them.
Udio2.5
AI music · AI songs you can't download
Since the Universal Music Group partnership, downloading audio, video, and stems is disabled for all accounts, so a free user cannot export a song to put behind a monetized video at all.
Beatoven.ai6.8
AI music · Royalty-free AI tracks
Free tier can't confirm a downloadable monetization license from its own pages
FAQ
Can I monetize Riffusion's free tier on YouTube?
No. The last directly-quotable Riffusion terms license free output "for any lawful, non-commercial purpose," and post-acquisition reporting says commercial rights begin on the paid Starter tier (around $6/mo). Free output also carries Google's SynthID watermark. A monetized video is commercial use, so the free tier is off-limits.
Is Riffusion the same as Google Flow Music now?
Effectively yes for the hosted product. Riffusion became Producer.ai and was acquired by Google in early 2026; riffusion.com now redirects to Google Flow Music. The downside for verification is that the live terms and pricing pages are Google-gated, so the current commercial clauses can't be confirmed verbatim, we mark those Unclear.
Isn't Riffusion open source and MIT-licensed?
The original Riffusion model code is MIT-licensed, and if you self-host and run it locally, MIT permits commercial use of your outputs. That is a separate legal object from the hosted Riffusion / Flow Music service, whose free tier is non-commercial. Don't conflate the two.