Short answer: V5.5 has been retired, so you can no longer start new generations with it. Use V6 for new generations. Songs you already generated with V5.5 are unaffected and can still be queried, played and downloaded as usual.
Models available now
| Model | Description |
|---|---|
| V6 | Standard version, suited to most song generation scenarios |
| V6 Wild | More divergent, for creations where you want unexpected surprises |
| V6 Mini | Lighter, suited to fast output and previewing |
All three variants are priced the same: 0.6 yuan per run, with a fixed 2 songs per run. Which one you pick depends on the direction you want; you can start with the standard version and then try the other two as needed.
Why V5.5 still shows up in past tasks
Retiring a model only affects new requests; it does not rewrite historical data. Older task records still show the model name used at the time. That is historical information only and does not mean the old model can still be submitted.
Are older songs affected?
No. Songs generated earlier can still be queried, played and downloaded as usual. The audio files are stored on the platform side and do not depend on whether the model is still online. Commercial licenses you have already applied for, or are about to apply for, are also unaffected by the model retirement.
Can I switch back to V5.5?
No. There is no rollback switch, and no setting that re-enables an older model for new generations: once a model is retired it is removed from the selectable list in the workspace and rejected by the API. The frequently asked versions of this question - how to change from V6 back to V5.5, whether old models can be turned back on, whether a rollback is planned - all have the same answer.
Two things are worth separating from that:
- Your existing songs are not affected. Anything made with V5.5 or earlier still plays, downloads and can be used as source material for covers, extends and remixes. The retirement applies to new generations only.
- V5.5 and V6 are different models, not different settings. Selecting V6 does not lower the quality of something you already made, and there is no per-song upgrade or downgrade.
If the reason you want V5.5 back is that a specific V6 result sounded wrong - pronunciation, a voice that drifted, an arrangement that came out too busy - that is usually a prompt or input problem rather than a model problem, and it is fixable without a rollback. The practical moves are: shorten the lines you feed in, name fewer instruments so the mix has room, keep the style description to genre plus mood plus one or two instruments, and regenerate rather than trying to repair a take you already dislike. Generating again costs the same 0.6 CNY and returns two fresh takes.
What you need to do to move to V6
No extra steps are required. In the current workspace, just select the V6 series in the model selector. When calling through the API, set the model field to the corresponding V6 model name. If you previously hard-coded V5.5 in your code, you need to change that value, otherwise you will get a model-unavailable error.
¥0.6 per generation, 2 tracks, unlimited downloads
Runs on the Suno V6 engine. Download MP3 or WAV as often as you like. Signing up needs an email address, not a phone number.
