Altered Studio vs Confucius4-TTS
Altered Studio
altered.aiConfucius4-TTS
github.comSide by side
| Figure | Altered Studio | Confucius4-TTS |
|---|---|---|
| Price from | $30/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 6 | 0 |
| Spec score · Text-to-Speech Software | 9.5 (#1) | 7.9 (#119) |
| Spec score · Text-to-speech tools | 9.3 (#6) | 7.9 (#119) |
| API | An API is available to Enterprise customers for integrating Altered Studio into other systems. | A FastAPI server provides non-streaming and streaming TTS endpoints that accept text, a language code and a reference audio upload. |
| API access | The FAQ says API access is offered to Enterprise customers for integrating Studio into other systems. | Yes |
| Integrations | The online Voice Editor can work with audio files in Google Drive, and RealTime Pro routes audio through a virtual microphone to apps including Discord, Zoom, Microsoft Teams, and Google Meet. | The project acknowledges use of Qwen3-TTS, CosyVoice, Amphion/MaskGCT, w2v-BERT 2.0, Seed-VC, and BigVGAN components or methods. |
| Product | Altered Studio combines multiple Voice AI technologies in one platform for creating professional voice content. | Confucius4-TTS is an LLM-based multilingual and cross-lingual zero-shot text-to-speech engine. |
| Voice cloning | Users can make a Rapid Voice Clone with 4–8 seconds of audio; custom voice models are available by contacting Altered. | It supports zero-shot voice cloning without requiring a reference transcript or additional training. |
Plans
Altered Studio
- FreeFree
- Creator$30 a month
- Professional$90 a month
- Creator$360 a year
- Professional$1,080 a year
- EnterprisePriced on request
In their own words
Altered Studio
Altered Studio combines voice transformation and audio production tools for creating professional voice content. Its Speech-to-Speech and Performance-to-Performance morphing changes a voice while retaining the speaker’s performance. Other tools include text-to-speech, voice cloning, AI voice cleaning, denoising, audio editing, DSP effects and batch processing. Studio supports transcription and translation in 75+ languages, and text-to-speech voice-over in 70+ languages. A Rapid Voice Clone can be made from 4–8 seconds of audio; custom voice models are available by contacting Altered. The online Voice Editor can work with Google Drive audio, while RealTime Pro routes audio through a virtual microphone to apps including Discord, Zoom, Microsoft Teams and Google Meet. The free plan includes 3 minutes per month of voice morphing and 10,000 AI tokens. Creator costs $30 a month billed annually; Professional costs $90 a month billed annually. Desktop use requires a Windows PC with an 8GB+ Nvidia GPU, and mobile devices are not currently supported.
Confucius4-TTS
Confucius4-TTS has no write-up on Specifiction yet; its figures are above.