Kits AI

Kits AI is a collection of audio tools for creating and changing voices, shaping vocals, and working with music. Its features include voice cloning and conversion, vocal enhancement and removal, stem splitting, AI mastering, harmonies, pitch editing, and key and BPM detection. For voice changing, the tools page lists a library of more than 100 royalty-free artists. The Windows desktop app supports drag-and-drop into a DAW or other music production software, plus auditioning multiple vocal models at once; browser access is also available. Its API offers voice conversion, voice blending, and vocal removal, but text-to-speech was deprecated from the API as of September 22, 2025. Kits says its model voices are licensed and sourced from artists, who benefit through revenue sharing. The free plan includes 15 conversion minutes, while Starter costs $10 a month and includes unlimited conversions, two voice slots, and 15 download minutes. Submitted and generated audio may be used to improve the services, including related AI and machine-learning models.

Kits AI may suit musicians and audio creators who want voice tools, vocal processing, and music-production features in a browser or Windows app. Its API may also suit developers integrating voice conversion, blending, or vocal removal.

The Free plan includes 15 conversion minutes, zero voice slots, and zero download minutes. Starter costs $10 a month and adds two voice slots plus 15 download minutes; higher plans expand those allowances.

Kits AI is a voice-conversion and music-production toolkit aimed at singers, producers, and developers. It is strongest when you need cloning or changing alongside vocal processing, while users with strict audio-privacy requirements or heavy export needs should examine the terms and paid limits carefully.

Overview

Kits AI brings voice cloning and voice changing together with vocal enhancement, vocal removal, stem splitting, AI mastering, harmonies, pitch editing, and key and BPM detection. That breadth suits a complete vocal workflow better than a single-purpose voice changer. Its models include a library of more than 100 royalty-free artist voices. Kits says those voices are licensed and sourced from artists, with artists in its model library benefiting through revenue sharing.

The trade-off is data handling. Submitted and generated audio may be used to improve the service, including training or improving related artificial-intelligence and machine-learning models. That policy deserves attention before uploading unreleased songs, client material, or other sensitive recordings. The privacy policy also notes that electronic transmissions may not be secure, despite reasonable safeguards such as computer protections and secured files and facilities.

Key features

Voice and production tools

Voice cloning and changing cover the central conversion work, while enhancement, removal, stem splitting, mastering, harmonies, and pitch editing address preparation and finishing. Key and BPM detection adds practical music-production support. Pronunciation controls are available, and both cloning methods are supported. Commercial use is supported, subject to the service's terms.

Desktop workflow

The desktop app lets you drag material into a digital audio workstation or other music software. You can audition multiple vocal models at the same time, which is useful when comparing voices during arrangement and production rather than exporting one option at a time.

API

The API provides voice-conversion, voice-blending, and vocal-removal endpoints for developers integrating those functions into applications. Text-to-speech was deprecated from the Kits AI API on September 22, 2025, so it is not the right choice for a new API project whose core requirement is speech synthesis.

Pricing

Kits AI uses a freemium model. The Free plan costs nothing, billed per month, and includes 15 conversion minutes, the voice designer/blender, and Kits generative vocals. It has 0 voice slots and 0 download minutes, so it is mainly a way to explore conversion and generative features rather than maintain custom voices or export finished audio.

Starter costs $10 a month, billed per month. It adds unlimited conversions, two voice slots, 15 download minutes, professional voice cloning, advanced settings, and the choir tool. This is the practical entry point for an individual who needs custom voices, but the two-slot and download-minute ceilings can constrain a larger voice catalogue or frequent exporting.

Producer costs $30 a month, billed per month. It keeps unlimited conversions, raises voice slots to unlimited, and provides 60 download minutes, with everything in Starter. It fits producers managing several voices, while projects with substantial export volume may still outgrow the download allowance.

Professional costs $60 a month, billed per month. It includes unlimited conversions, unlimited voice slots, unlimited download minutes, everything in Producer, and unlimited downloads subject to fair use. This is the clearest option for high-volume production, provided your usage remains within fair-use expectations.

After cancellation, paid features continue through the current billing period. Custom AI voice clones are then locked and custom voices are frozen until subscription renewal. Support is handled through the FAQ or a support-request form.

Platforms

Kits AI runs in a web browser, has a Windows desktop app, and offers an API. Windows users can download the desktop application or use the browser version. The desktop workflow is oriented toward dropping audio into a DAW, while the API targets application integration.

Who it's for

Musicians and vocal producers should consider Kits AI when conversion, cloning, cleanup, harmonies, and mastering belong in one workflow. Starter suits a solo creator needing a small number of custom voices; Producer is better for multiple voices and regular exports; Professional targets sustained, high-volume work. Developers can use the API for conversion, blending, and removal, but should choose another service if text-to-speech is essential. Users who cannot permit service-improvement use of uploaded audio should look elsewhere.

Pros and cons

Pros

• Combines voice conversion with enhancement, stem splitting, mastering, harmonies, pitch editing, and music-focused detection tools.
• Offers more than 100 royalty-free artist voices, with licensing and revenue sharing described by Kits.
• Windows, browser, and API access support studio, desktop, and integration workflows.
• Paid plans provide unlimited conversions, and higher tiers remove voice-slot or download-minute constraints.

Cons

• The free plan has no voice slots and no download minutes, limiting custom-voice work and export.
• Starter is restricted to two voice slots and 15 download minutes; Producer provides 60 download minutes.
• Submitted and generated audio may be used to improve related AI and machine-learning models.
• API text-to-speech was deprecated on September 22, 2025.

Alternatives

Voice Cloning Software and AI Singing Voice Generators lists are useful starting points for comparing specialist categories. Consider Resemble AI if you need broad platform coverage, including mobile, Linux, macOS, extensions, and self-hosting, plus a pay-as-you-go plan with credits that never expire. Fish Audio offers a freemium API, desktop, web, and self-hosted footprint with a free monthly credit allowance. IndexTTS, Qwen3-TTS, and VoxCPM are free or open-source choices for teams comfortable running models themselves. Sprag is a paid API and self-hosted option with usage-priced speech plans. Voicebox is a freemium multi-platform project, while Fish Speech provides a free tier with monthly credits, generation and character caps.

Verdict

Choose Kits AI if you want voice cloning or conversion integrated with serious vocal-production tools and a Windows, browser, or API workflow. Its licensed artist library and broad processing set are the main reasons to choose it. Look elsewhere if you need API text-to-speech, unrestricted free exports, or a policy that keeps submitted and generated audio out of service-improvement training.

Kits AI combines voice tools and music-production features, with browser, Windows, and API options. Review the plan limits and audio-use policy before choosing it, especially if you need voice slots, downloads, or text-to-speech through the API.