Kits AI vs Vocalize
Kits AI
kits.aiVocalize
vocalize.fmSide by side
| Figure | Kits AI | Vocalize |
|---|---|---|
| Price from | $10/mo | $9.99/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| API | Yes | Yes |
| Plans published | 8 | 3 |
| Spec score · AI Singing Voice Generators | 9.0 (#2) | 8.4 (#8) |
| API | The API page lists voice conversion, voice blending, and vocal removal endpoints for integration into applications. | The REST API supports speech generation, streaming, instant cloning from a 10–30 second clip, direction tags, and 80+ languages. |
| Headquarters | San Francisco, California, United States | Sheridan, Wyoming, United States |
| Product | Kits AI describes itself as studio-quality AI audio tools for creating custom voices, singing in different styles, playing instruments, and isolating vocals. | Vocalize generates AI cover songs and text-to-speech from community-uploaded voices or a voice the user clones. |
| Rating on Trustpilot | 1.5 out of 5 from 57 reviews. | 2.6 out of 5 from 4 reviews |
| Support | The pricing page directs customers to the FAQ or a support request form for help with tools and subscriptions. | The site offers email and chat support and says it replies within 24 hours; the paid plan advertises 24/7 live chat. |
| Voice library | The platform offers more than 100 royalty-free artist voice models. | The site advertises access to more than 50,000 AI voices. |
| What it does | Kits AI is a browser-based music platform that converts supplied vocals into other singing voices and provides related production tools. | Vocalize generates AI music covers and text-to-speech using community-uploaded or cloned voices. |
Plans
Kits AI
- FreeFree
- Starter$10 a month
- Producer$30 a month
- Professional$60 a month
- FreeFree
- Starter$10 a month
- Producer$30 a month
- Professional$60 a month
In their own words
Kits AI
Kits AI provides audio tools for creating and changing voices and working with vocals and music. Its features include voice cloning and conversion, vocal enhancement and removal, stem splitting, AI mastering, harmonies, pitch editing, and key and BPM detection. The voice-changing tools include a library of 100+ royalty-free artists. A Windows desktop app supports drag-and-drop into a DAW or other music production software and simultaneous auditioning of multiple vocal models; Kits AI is also available through a browser and API. The API lists voice conversion, blending, and vocal removal endpoints, while text-to-speech was deprecated from the API as of September 22, 2025. Kits says voices used in its models are licensed and sourced from artists, who benefit through revenue sharing. The free plan includes 15 conversion minutes, no voice slots, and no download minutes. Paid plans start at $10 a month. Submitted and generated audio may be used to improve the services, including related AI and machine learning models.
Vocalize
Vocalize generates AI cover songs and text-to-speech using voices from its community library or voices users create. On the web, users can train a text-to-speech voice from a short audio sample or make a voice-to-voice RVC model for singing and voice swapping. The searchable library includes uploaded AI voice models and accepts RVC.pth and.index files. Vocalize says text-to-speech takes a few seconds and covers take 10 to 60 seconds; free accounts may wait in a shared queue when demand is high. New signups receive 3 credits without entering a credit card. 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 for existing /v1/audio/speech integrations by changing the base URL. API usage is prepaid at $0.048 per minute of generated audio plus $0.003 per request, with no subscription. Converter is listed at $9.99 a month, though the page also displays $12.99 and describes paid access as starting at $12.99/mo. Commercial use is restricted unless Vocalize approves it.