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Sonauto

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Free AI music generator that turns prompts and lyrics into full songs with vocals, now rebranded as Treblo

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  • Deployment Cloud Based
  • Starting price Free
  • Free trial Available
  • Best for Freelancers, Startups, SMEs

What is Sonauto?

Sonauto is an AI music generator that turns text prompts, lyrics, or melodies into complete songs with vocals and instrumentation. Founded in San Francisco in 2023 and backed by Y Combinator, the company built a music foundation model called Melodia that produces full songs, including up to 4.5 minute tracks with its latest engine, in a wide range of styles and languages. As of 2026 the product has rebranded from Sonauto to Treblo, with the sonauto.ai domain now redirecting to treblo.com, though user accounts and existing songs carried over unchanged.

The web app lets users generate songs from simple prompts or detailed style tags, switch between vocal and instrumental modes, and separate finished tracks into stems such as vocals, drums, bass, and instruments. It also includes a social layer for sharing tracks, following artists, and browsing curated playlists and radio. The consumer product is free with no stated song limit, while a separate paid API serves developers who want to integrate music generation into their own applications.

Key Features of Sonauto

Sonauto lists 10 documented features, including Text-to-song generation with AI vocals and instrumentation, Custom lyric input or AI-generated lyrics and Instrumental mode that skips vocals entirely. The list below covers what the product does rather than how it is marketed.

  • Text-to-song generation with AI vocals and instrumentation
  • Custom lyric input or AI-generated lyrics
  • Instrumental mode that skips vocals entirely
  • Songs up to approximately 4.5 minutes with the latest model
  • Stem separation into vocals, drums, bass, and instrumental tracks
  • Multi-language vocal generation across dozens of languages
  • Style and mood control via descriptive tags across many genres
  • Remix and extend existing generated tracks
  • Social sharing hub with playlists, artist follows, and community radio
  • Developer API with credit-based pricing for programmatic music generation

Sonauto Pricing

Sonauto lists 6 plans, starting free and running to $1,150.

Free (Web/Mobile App)

Free

Unlimited song generations, no credit system, songs up to ~4.5 minutes

Consumer-facing plan for the web app and iOS/Android apps. No stated cap on number of songs generated.

API Free Trial

Free

1,500 credits (approximately 15 songs)

One-time signup credit grant for developers to test the API before choosing a paid plan.

API Starter

$11/month

20,000 credits (approximately 200 songs) per month

Entry-level developer API subscription.

API Growth

$88/month

160,000 credits (approximately 1,600 songs) per month

Mid-tier developer API subscription.

API Scale

$330/month

660,000 credits (approximately 6,600 songs) per month

High-volume developer API subscription for larger generation needs.

API Enterprise

$1,150/month

2,875,000 credits (approximately 28,750 songs) per month

Top-tier API plan; pay-as-you-go overage available at roughly $0.04 per 100 credits with priority support.

Sonauto Specifications

Sonauto is available on web app and has iOS and Android apps. It offers an API, has a free trial and has a free plan.

Deployment
  • Cloud Based
Billing cycle
Monthly
Desktop
  • Web App
Mobile
  • iOS
  • Android
Languages
  • English
Built for
  • Freelancers
  • Startups
  • SMEs
Support
  • Email
Integrations
Primarily a standalone web and mobile app. Offers a developer API (branded Melodia) for integrating text-to-music generation into third-party applications; no consumer-facing integrations with other software (e.g. DAWs) are documented on the official site.
Public API
Yes
Free trial
Yes
Free plan
Yes
Runs in browser
Yes
Customisable
Yes
Website
sonauto.ai

Sonauto Videos

Sonauto Screenshots

Sonauto Comparisons

Side by side comparisons of Sonauto against 3 other AI Music Generator options listed here.

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Sonauto FAQs

Yes. The consumer web and mobile app is free with no stated limit on the number of songs you can generate. A separate paid API exists for developers who want programmatic access.

Yes. Sonauto rebranded to Treblo in 2026. The sonauto.ai website now redirects to treblo.com, but the company says accounts, songs, and projects carried over unchanged.

Yes. The tool has an instrumental mode that skips singing entirely, useful for backing tracks, lo-fi mixes, or game and video scores.

With the latest generation engine, songs can run up to about 4.5 minutes, longer than the short clips produced by many earlier AI music tools.

Yes. A separate developer API is available with a free trial of credits on signup, followed by paid monthly credit plans or pay-as-you-go pricing.

The company states there are no usage restrictions on songs users create, though some independent reviews note that detailed commercial licensing terms are not clearly spelled out on the public site, so users planning commercial release should verify current terms directly with the company.