Is Sonauto a real Suno alternative, and what do you get on the free plan?

Type sonauto.ai into the address bar and you will not land on Sonauto. You land on treblo.com, a site with a little bird in the corner and no mention of the old name until you scroll down to the FAQ. That is the first thing anyone shopping for a Suno alternative should know: Sonauto still exists, it just changed its name. The company's own announcement says the team is the same, accounts and songs carried over, and old sonauto.ai links redirect. So every review you read that says "Sonauto" is about the product now called Treblo.

The short answer to the title: yes, Treblo (formerly Sonauto) is a real alternative to Suno for making a full song with vocals from a prompt and a lyric, and on paper its free plan is far more generous than Suno's. Unlimited generations on its newest model, downloads in five formats, editing tools included, and terms that assign you whatever rights exist in the output. Where it is weaker is exactly where the company itself admits it: languages written in non-Latin scripts, Russian included, may come out with shaky pronunciation. And whatever you paste into it, prompts and lyrics included, you license to the company to improve its models.

If you are still comparing the whole field, Udio, Stable Audio, ElevenLabs Music and the rest, the broader guide to Suno AI alternatives is the right page: it sorts tools by the job you have. This page is for the reader who already has Sonauto on the shortlist, probably because someone said "it's free", and wants to know what that free actually covers and where the catch is.

Sonauto is now Treblo: what changed and what did not

The rename is recent enough that half the internet has not caught up. Directory listings, comparison blogs and videos still say Sonauto, some describe an older model, and several contradict each other about the free tier. Here is what the company states on its own pages at the time of writing:

• The domain moved from sonauto.ai to treblo.com. Old links redirect.
• The name changed in the app, the logo and the social accounts. The homepage now also links to iOS and Android apps.
• Developers are asked to move from api.sonauto.ai to api.treblo.com; the old host still works for now.
• Accounts, logins, songs and shared links stayed where they were. The announcement describes the team as four people.

The current model is called Melodia v3. If a review talks about "Sonauto v2" or "v2 beta", it is describing an earlier generation, and its verdict on quality may not hold for what you will hear today. That alone is a reason to run your own test rather than trust a six-month-old roundup, this one included once it ages.

What the free plan actually gives you

Most "free" AI music plans are trials in a costume: a few songs a day, a weaker model, no downloads, no commercial use. Treblo's homepage is built around the claim that its free plan is different, and it backs the claim with specifics you can check in your own account. At the time of writing, the free tier, as Treblo describes it, includes:

• Unlimited songs. The site's wording is no daily limits and no "first three free" trial.
• The latest model, Melodia v3, not a cut-down free model.
• Generation, inpainting, extending and stem separation. Inpainting here means regenerating a section you do not like while keeping the rest.
• Downloads in OGG, MP3, WAV, FLAC and M4A.
• No usage restrictions placed by Treblo on songs you create, with a pointer to Section 8 of the terms.
• Lyrics your way: paste finished lyrics, sketch a hook, or let Treblo write them. An instrumental switch skips the vocal entirely.
• Nothing has to be public. Tracks can stay private, be downloaded without publishing, or be shared as unlisted.

The FAQ also says a song starts streaming in about 15 seconds and keeps generating while you listen.

So where does the money come from? The visible paid product is the developer API. The developer page lists a free trial of 3,000 API credits after card verification, then monthly plans starting at $11 and climbing to high-volume tiers. That is a business for app builders, not for someone making a birthday song, and the consumer homepage lists no paid plan at all. Free plans can change, and a company of four people can change one quickly, so treat "unlimited" as true today, not as a contract. For how the other free plans stack up, Suno, Udio and the rest, see which AI music generators are actually free.

Treblo free vs Suno Free vs Suno Pro

The table below puts each company's own pricing and FAQ pages side by side, at the time of writing. Treblo's homepage carries its own comparison table against Suno; the Suno columns here come from Suno's pricing page instead, because a competitor's description of a rival's plan is not a source.

Read the table for what it is: a comparison of terms, not of sound. Nobody can tell you from a pricing page whether Melodia v3 or Suno's v6 will sing your particular chorus better. What the table does settle is the cost of finding out. On Treblo, testing is free and unlimited. On Suno's free plan, testing is rationed and the result cannot be downloaded or used commercially, so a serious Suno test usually means paying for a month.

Where Treblo is a real alternative

When the budget is zero and the song has a real use. A wedding toast track, a YouTube intro, a song for a friend's band night. On Suno's free plan the honest answer to "can I put this in my monetised video" is no: Suno's pricing page lists commercial rights only on paid plans. Treblo's FAQ says yes, even on the free tier, and points to its terms. For a reader who needs one usable song this month and will not need another for a year, that difference is the whole decision.

When you iterate a lot. Unlimited generations change how you work. Instead of rationing credits on one polished prompt, you can run the same lyric through ten style combinations, keep two, and inpaint the weak bridge. Throwing away nine takes costs you time and nothing else.

When you need the stems or a lossless file. Stem separation plus WAV or FLAC downloads on a free plan matter to anyone who will mix the track, tuck the vocal under a video, or hand it to a friend who produces.

When the song is in English or another Latin-script language. Treblo's FAQ says it handles languages written in the Latin alphabet: English, Spanish, Portuguese, French, German, Swedish and dozens more.

Where Suno still makes more sense

Non-Latin scripts. The same FAQ is unusually frank: Treblo can sing in Japanese, Korean, Chinese, Arabic, Russian, Hindi and other languages with their own scripts, but "the pronunciation may be off", and full support is listed as coming soon. If your lyric is in Russian or Japanese, that is the company itself telling you to test carefully before you plan around it.

When your workflow is built around Suno's format. Suno's prompting has its own habits: a free-text Style field, an Exclude field, section tags with extra instructions inside the brackets, persona tricks. Most of the community knowledge and guides, ours included, are written against that format. Treblo builds the sound from a pick of thousands of style tags plus a plain-language description. Some Suno habits will carry over and some will not, and nobody should promise you a Suno prompt behaves the same in Melodia v3.

When you already pay for Suno. If you hold a paid Suno plan, the free-plan advantages above shrink to "a second model with a different voice". That is still useful: a second opinion on the same lyric is exactly what the guide to picking a generator by the song you are making recommends. It is not, by itself, a reason to cancel.

Rights: what the terms actually say

This is where reviews usually turn into slogans ("you own everything!"), so here is a description rather than a verdict.

Section 8 of Treblo's terms of service, at the time of writing, says that as between you and the service, and to the extent the law allows, you own whatever rights may exist in the music you generate, and that Treblo assigns you its own rights in it, if any. The same section says outputs may not be unique and the service may generate the same or similar output for different users. It gives no warranty about whether outputs are copyrightable or legal. And it grants Treblo a broad, perpetual, royalty-free licence to use your outputs and "the prompts, lyrics, and other content You submit" to run and improve the service and its AI models.

Two practical readings follow. First, "whatever rights may exist" is careful wording: whether an AI-generated track carries any copyright at all depends on the country and on how much human authorship went into it, and Treblo does not promise an answer. Second, the lyric you paste in is licensed to the company for model work. For a throwaway prompt that changes nothing. For a lyric you wrote over three evenings and plan to release, it is worth knowing before you press create.

This is not legal advice. For how ownership of AI music is treated in different places, read who owns AI-generated music, and for our own terms on lyrics from our generator, see the disclaimer.

Where the lyrics come from

Every song generator, Treblo included, has to get its words from somewhere, and there are three sources.

Treblo writes them. Free and instant. Fine for a joke song or a placeholder. The weakness is the one every one-click lyric writer shares: you get what the model reaches for first, and the chorus rarely sounds written for one specific person.

You write them. The best result if you can, the slowest if you cannot. Most people searching for a Suno alternative are not looking for a songwriting evening.

A dedicated lyric generator writes them, and you paste the result. This is where we fit, and the boundary deserves a plain statement. sunomarket.com is an independent site. It is not Suno, not Treblo, and not affiliated with either. Our AI song generator takes a form brief (theme, point of view, language, structure, hook type, emotion, audience age) and returns a title and a full lyric with section tags. It does not sing and never produces audio. You paste the lyric into whichever tool you pick. It is built for Suno's format, but a tagged lyric is plain text that any tool with a lyrics box accepts; how each tool reads the tags differs.

What it costs, so nobody is surprised: there is no free trial of the lyric generator, and new accounts start with zero credits. One lyric on the base model, SM1, costs 20 credits, which is $0.20. The more polished models, SM2 and SM3, run an extra editing pass that flags weak lines and rewrites them, and cost 80 credits, $0.80 a lyric. Credits come with a $5 monthly plan (500 credits) or a $19 one-time lifetime purchase (1,500 credits that never expire). The details are on the pricing page.

If you only want free songs and the words do not matter much, Treblo's own lyric writer is the honest pick and costs nothing. If the words are the point, a song for a partner, a parent, a team, then twenty or eighty cents for a lyric built around a real brief often changes the result more than switching singers does.

Pasting a tagged lyric into Treblo

Treblo's FAQ says the model understands "simple structural text like [Intro], [Verse 1], and [Chorus]". That is a narrower promise than the bracket tricks Suno users lean on, so keep the tags plain when you move a lyric across. Here is a short lyric in the shape our generator returns, written for this page:

Title: Last Bus Home

[Verse 1]
Window fogged, I draw your name and wipe it out
Driver hums a song that no one asked about
Every stop is somewhere that we swore we'd go
Every stop goes by too fast or way too slow

[Chorus]
Last bus home, and the seat beside me's cold
Last bus home, every streetlight growing old
I could ride until the city runs out of light
Last bus home, and I'm not getting off tonight

[Verse 2]
Kitchen lamp still burning past the corner shop
You'd have laughed at me and told me where to stop

[Chorus]
Last bus home, and the seat beside me's cold
Last bus home, every streetlight growing old
I could ride until the city runs out of light
Last bus home, and I'm not getting off tonight

[Outro]
Not tonight

Three habits make the paste go smoothly:

1. Keep tags to the plain set. [Verse 1], [Chorus], [Bridge], [Intro], [Outro]. A Suno-style tag stuffed with instructions, like [Outro | fade out | piano only], is outside Treblo's stated promise. In the best case it is ignored; in the worst it gets sung. Move the instruction into the style tags instead.
2. Leave the title line out of the lyrics box. The Title: line above is for you. Type the title into the title field, or the model may treat it as a line to sing.
3. Do not paste a Suno style string into the lyric. Treblo builds the sound from its own tags. Pick indie pop, melancholic, female vocalist from its list rather than pasting a long Suno style prompt where the words go.

A one-evening test to decide

Reviews, this one included, cannot hear your song. A test can, and on Treblo it costs nothing. This protocol gives you an answer in about an hour:

1. Pick one lyric you care about. Your own, or one from the generator. Use the same words for every run so the only variable is the tool.
2. Run it five times in Treblo with three or four style tags each time, changing one tag per run. Keep the two best.
3. Run the same lyric in Suno on whatever plan you have. On the free plan, the daily credits cover a small test; you will not be able to download the result, but you can listen.
4. Score each version on three things only: can you understand every word, does the chorus land harder than the verse, does the voice suit the song. Ignore everything else at this stage.
5. If the song is not in a Latin-script language, add a fourth score, pronunciation. This is the spot Treblo's own FAQ tells you to watch.
6. Check what you need afterwards. Stems, a WAV, commercial use: if any of these matter and you do not pay for Suno, Treblo's free terms already settle it.

If Treblo wins on your lyric, you have a free tool with downloads and editing, and the test cost you an evening. If Suno wins, you know exactly what the subscription buys. Either way, the words are the one part you carry from tool to tool, so make them good before the test starts: open the song generator, fill in the brief for the person or the moment the song is for, and run the result through both.