Vocalize
Vocalize generates AI cover songs and text-to-speech audio using community-uploaded voices or voices users create.
What Vocalize is
Vocalize generates AI cover songs and text-to-speech audio using community-uploaded voices or voices users create. A short audio sample can train a text-to-speech voice, while a voice-to-voice RVC model supports singing and voice swapping. Its searchable library offers user-uploaded AI voice models, and users can upload RVC .pth and .index files. Vocalize says text-to-speech takes a few seconds and AI covers take 10 to 60 seconds; free accounts may wait in a shared queue during busy periods. New signups receive 3 credits without providing a credit card, and a free trial is offered. The REST API supports speech generation, streaming, instant cloning from a 10–30 second clip, direction tags, and 80+ languages. An OpenAI-compatible endpoint can be used with existing /v1/audio/speech integrations by changing the base URL. The API plan charges $0.048 per minute of generated audio plus $0.003 per request, prepaid with no subscription. Commercial use requires Vocalize's approval.
Good
- Supports text-to-speech and AI cover generation.
- Can train voices from short audio samples.
- API supports 80+ languages and streaming.
- New signups receive 3 credits without a card.
- Offers an OpenAI-compatible API endpoint.
Watch out
- Free accounts may wait in a shared queue.
- Commercial use requires Vocalize's approval.
- API usage has per-minute and per-request charges.
- Converter pricing is displayed inconsistently.
Who it suits
Vocalize suits people creating synthetic speech, cover songs, or voice-swapping audio, as well as developers integrating speech generation through an API. Commercial users should note that use requires the maker's approval.
Verdict
Vocalize combines voice creation, a searchable model library, cover generation, and a developer API. Free access includes 3 signup credits, while API use and Converter subscriptions have separate pricing; commercial use needs approval.
Plans and prices
From Vocalize's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Vocalize API | Free | Thousands of voices · Private voice clones · 80+ languages · Streaming · OpenAI-compatible endpoint · $0.048 per minute of generated audio plus $0.003 per request; prepaid, no subscription |
| API prepaid usage | $0.05, paid once | Text-to-speech API usage billed per generated audio minute and request · prepaid, no subscription; also $0.003 per request |
| Converter | $9.99 a month | Unlimited generations · queue priority · full AI voice library · unlimited model uploads · simultaneous generations · advanced conversion settings · high output quality · 24/7 live chat · monthly subscription; page also shows $12.99 |
The facts
Each one read from Vocalize's own pages, with the date it was checked.
What it does
- AI cover processing
- The service separates, converts and remixes vocals; cover generation usually takes 10 to 60 seconds.checked 21 Oct 2026
- API
- The REST API supports speech generation, streaming, instant cloning from a 10–30 second clip, direction tags, and 80+ languages.checked 8 Oct 2026
- API documentation depth
- Published documentation covers quickstart, authentication, streaming, direction tags, voices, cloning, billing, limits, errors, changelog and an OpenAPI specification.checked 21 Oct 2026
- API integration
- The API provides an OpenAI-compatible endpoint for switching existing /v1/audio/speech integrations by changing the base URL.checked 8 Oct 2026
- API languages
- The API documentation claims more than 80 languages with language detection from text.checked 21 Oct 2026
- API minimum funding
- The quickstart says API billing requires adding at least $10 credit and requests fail when the prepaid balance is insufficient.checked 21 Oct 2026
- API protocol
- Vocalize exposes HTTPS REST endpoints under https://api.vocalize.fm/v1 using bearer API keys.checked 21 Oct 2026
- API streaming
- A streaming text-to-speech endpoint starts returning audio as it is generated.checked 21 Oct 2026
- Commercial-use restriction
- The terms limit users to domestic and private use unless Vocalize specifically approves commercial or business use.checked 21 Oct 2026
- Community models
- Every voice model is user-generated and members can upload their own models.checked 21 Oct 2026
- Copyright process
- Guava LLC publishes a DMCA process requiring copyright notices to be sent to [email protected] and says repeat infringers may be suspended or terminated.checked 21 Oct 2026
- External technical assessment
- Scam Detector rates vocalize.fm 68.1/100, reports valid HTTPS, and records the domain registration date as April 27, 2023.checked 21 Oct 2026
- External trust assessment
- ScamAdviser assigns vocalize.fm a trust score of 0 and flags hidden WHOIS ownership, chargeback-prevention concerns and mainly negative reviews.checked 21 Oct 2026
- Generation speed
- Text-to-speech takes a few seconds and AI covers take 10 to 60 seconds; free accounts may wait in a shared queue at busy times.checked 8 Oct 2026
- Limit: generation variability
- AIChief notes that generation times vary with demand and that unlimited, priority access requires a subscription.checked 21 Oct 2026
- Limit: missing signup credits reported
- Two Trustpilot reviewers said they received no free credits after signup and were shown paid pricing instead.checked 21 Oct 2026
- Limit: voice similarity complaint
- A Trustpilot reviewer reported that the generated voice was not similar to the advertised voice.checked 21 Oct 2026
- OpenAI compatibility
- The API includes an OpenAI-compatible speech endpoint so clients can switch by changing the base URL.checked 21 Oct 2026
The company
- Company headquarters
- The registered office is listed at 1309 Coffeen Avenue, STE 1200, Sheridan, Wyoming 82801, United States.checked 21 Oct 2026
- Company legal name
- The terms identify Guava LLC, a Wyoming limited liability company, as the operator doing business as Vocalize.checked 21 Oct 2026
- Founded year
- No founded year is stated on the official pages reviewed.checked 21 Oct 2026
- Headquarters
- Sheridan, Wyoming, United Stateschecked 28 Sep 2026
Money
- Free access
- New signups receive 3 credits to try the service without entering a credit card.checked 8 Oct 2026
- Free credits
- New accounts receive three credits without entering a credit card.checked 21 Oct 2026
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