Riffusion

Not any more. As of August 2026 Riffusion is discontinued: it rebranded to Producer.ai in August 2025, Google acquired the company in February 2026, and riffusion.com now redirects to Google Flow Music at flowmusic.app. Historically, Riffusion offered a free tier with daily generation limits, personal use only, and a paid Pro subscription that unlocked commercial licensing, longer tracks, higher-quality exports, and faster generation queues. Those plans are no longer on sale. We could not read current Google Flow Music pricing because its pricing page blocks automated requests.

Suno is the polished mainstream leader with better vocals, clearer lyric handling, and radio-ready pop song output. Riffusion had a rawer, more experimental sound that many producers preferred as source material for remixing. If you wanted finished songs, Suno was the better choice. If you wanted AI-generated stems and loops to chop up in a DAW, Riffusion was often the better collaborator. Riffusion is now discontinued, so this comparison is historical.

This is now historical. While Riffusion ran, commercial rights required a paid Pro subscription; free-tier generations were limited to personal and educational use. Riffusion is discontinued as of August 2026 and the service now operates as Google Flow Music, so the licence that applies to anything you generate today is Google's, not Riffusion's. If you still hold tracks generated on the old service, re-check the current terms before releasing commercial work.

Riffusion was strongest on electronic, ambient, lo-fi, experimental, and instrumental genres where its diffusion-model roots produced interesting textures. It was weaker than Suno on polished pop and hip-hop with clean vocals. For film score sketches, game music prototypes, and background beds, Riffusion was a surprisingly good option. This is historical: the Riffusion service is discontinued.

It did, on the Pro subscription. Stem access let you download separated drums, bass, and instrumental layers so you could remix, replace, or extend the AI-generated track inside your own DAW like Ableton, Logic, or FL Studio. That was what turned Riffusion from a toy into a serious production aid. The feature is historical: the Riffusion service is discontinued and its Pro subscription is no longer on sale.

The original research is. Riffusion started as an open-source research project applying Stable Diffusion principles to audio spectrograms in December 2022, and that research code remains publicly available. The hosted commercial product that later ran at riffusion.com was never open source, and it is now discontinued: it rebranded to Producer.ai in August 2025 and Google acquired it in February 2026. riffusion.com redirects to Google Flow Music.

Not any more. While it ran, Riffusion supported track extension: you fed it an existing clip and it continued that composition in the same style. You could also blend styles, iterate on previous generations, and create longer compositions by chaining extensions. The Riffusion service is discontinued, so these features are historical.

Choose Mureka AI if you want voice cloning and a friendlier pop-song generator at $10/month. Riffusion suited producers who preferred experimental, instrumental, or loop-based generations as source material, but it is discontinued and can no longer be signed up for.