Which Suno model made this song

Two names for the same model

Every song carries a record of what generated it, and that record has two fields rather than one.

• The public version. v4, v4.5, v5 and so on. This is the number Suno uses in its own interface, in release notes and in everything you have read about the models
• The internal name. A codename Suno uses in its own systems, which does not resemble the version number at all and is never used publicly

They describe the same thing. If you have ever looked at exported song data and found a model name you had never heard of, that is what you were looking at, and it is not an error. The public version is the one to read, and the one worth keeping in an archive, because it is the only one that means anything to anyone else.

Why it is worth knowing

Mostly for comparison. When you have a handful of takes of one idea and one of them is noticeably better, the useful question is whether that was the prompt or the model. If the good take came from a newer version and the rest did not, the prompt was probably never the problem.

It also matters when you come back to old work. A song made a year ago on an older version will not sound like the same prompt run today, and the version stamp is what tells you that before you spend credits trying to reproduce it.

Where to read it

On suno.com the version appears in a song's details. That is fine for one song and slow for a library, because it means opening each one.

Suno Manager prints the public version directly on the song row while you browse, so a list of takes shows at a glance which engine made each. The same value goes into the archive with every song, which means you can filter your whole library by model, sort by it, and see it in the CSV or Markdown export alongside the style and the lyrics.

Earlier versions of the extension showed the internal codename here, because that is what the data returns first. It now prefers the public version, since a name nobody recognises is not information. The extension is free on the Chrome Web Store.

What it does not affect

Your download allowance. The cap counts songs unlocked, not which model made them, so a v5 track and a v4 track cost exactly the same against the limit on your plan. Model choice is a credits question, not a downloads question, and the difference between those two is covered in the credits guide.

Questions people ask

How do I tell which Suno model made a song?

The version is recorded on the song itself and shown in its details on suno.com. Suno Manager also prints it on the song row and stores it with every song in the archive, so it can be filtered and sorted later.

Why does my song data show a name like chirp instead of v5?

Songs carry two model fields: a public major version such as v4.5 or v5, and an internal codename Suno uses in its own systems and never uses publicly. They refer to the same model. The public version is the one worth reading.

Can I change the model of a song I already made?

No. The model that generated a song is a property of that generation. Producing the same idea on a different model means generating it again, which spends credits.

Does the model affect my download limit?

No. The download cap counts songs unlocked and is the same regardless of which model produced them.