Sonauto Review, Pricing & Alternatives (2026)

Sonauto is an AI music service from Sonauto, Inc., now branded Treblo on its website. The company launched Sonauto 1.0 in April 2024 and later described its Melodia foundation model in Y Combinator launch material. Its initial product paired complete song generation with a sharing platform for people without formal production skills. The current service is available on the web and through iOS and Android apps. It does not publish a current user count, valuation, or funding total. The name change affects discovery and legal interpretation: the terms identify Sonauto, Inc., while the active service, support address, and branding use Treblo. The service is aimed at beginners, songwriters, and creators making drafts or personal tracks.

A session can start with a text idea, your own lyrics, or style direction. Users may choose from thousands of style tags, ask Treblo to write lyrics, or provide their own, including structural labels such as [Verse 1] and [Chorus]. Generated songs begin streaming in about 15 seconds and may reach 4.5 minutes in the v3 preview. Editing supports section changes, lyric replacement, part regeneration, extending, remixing, and inpainting. Instrumental mode removes vocals. Rhythm control was described at launch through uploaded percussion or a selected BPM. Downloads include OGG, MP3, WAV, FLAC, and M4A. Tracks can remain private or unlisted, or appear in profiles, playlists, groups, radio, and community discussions, so users can iterate privately before sharing.

Sonauto originally presented Melodia as a latent diffusion system rather than an audio-token language model. Its launch description combined a variational autoencoder bottleneck with a diffusion transformer, and said this design supported coherent lyrics and greater control. The 2024 discussion also described rhythm control and planned variations from uploaded or generated material. Y Combinator records a v2 update in January 2025, with example songs from that model. The current website promotes Melodia v3, identified as a preview, and associates it with full-length generation, editing, inpainting, extending, and stem separation. Sonauto has not published a dated v3 release announcement, benchmark results, a training-data inventory, or a model card, which makes technical comparison across releases difficult.

The advertised cost is $0 per month. The current site says users receive unlimited songs, no daily limit, no first-three-songs trial, latest-model access, generation, inpainting, extending, stem separation, sharing, and downloads in all listed formats. The accessible pricing page does not show a separate paid plan, so no paid monthly price is available for comparison. Account use is limited by age and terms: the service is intended for users at least 18, and automated access is prohibited. Licensing imposes a more consequential limit than generation volume. The terms grant access for personal, non-commercial use or an internal business purpose, while other commercial exploitation requires express prior written permission. Public contributions receive a broad, perpetual, worldwide license.

The main limitation is rights ambiguity for release-oriented work. The website says users may use songs outside Treblo, while the June 2026 terms restrict commercial exploitation of the services and content without written permission, so commercial users should obtain clarification before distribution. The v3 preview may also change in behavior or quality, and the privacy notice does not answer every question about training on uploaded material. Suno offers a more established subscription structure, while Udio is another close full-song competitor with a different product and rights framework. Mureka also competes on AI song generation, though its advertised free tier is narrower. Choose Sonauto for unlimited free experimentation, editable drafts, private sharing, and fast idea generation rather than guaranteed commercial licensing or enterprise commitments.