TTS.ai

What is TTS.ai?

TTS.ai is the most comprehensive AI voice platform, offering 20+ text-to-speech models, voice cloning, speech-to-text, and audio tools. All models are open source with no vendor lock-in.

Is TTS.ai free?

Yes! TTS.ai offers free text-to-speech with Kokoro, Piper, VITS, and MeloTTS models. No account required. Sign up to get 15,000 free characters and access all models. Paid plans start at $9/month.

Which model should I use?

For speed, use Kokoro or Piper. For quality, try CosyVoice 2 or StyleTTS 2. For voice cloning, use Chatterbox or GPT-SoVITS. For dialog, use Dia TTS. Try multiple models on the same text to compare.

Does TTS.ai have an API?

Yes. OpenAI-compatible REST API for TTS, STT, voice cloning, and audio tools. Included on every plan including free, with rate limits that scale by tier (Free: 10 req/min, Lite: 20, Starter: 30, Pro: 60, Business: 300). View documentation at tts.ai/api/.

How natural does the AI voice sound?

Voice quality varies by model. Premium models like CosyVoice 2, StyleTTS 2, and Chatterbox produce near-human quality speech with natural intonation and emotion. Free models like Kokoro offer excellent quality for most use cases.

What languages does TTS.ai support?

TTS.ai supports 30+ languages across its model library. English has the widest model support, but models like CosyVoice 2 cover Chinese, Japanese, and Korean; GPT-SoVITS handles Chinese, Japanese, Korean, and English; and MeloTTS supports English, Spanish, French, Chinese, Japanese, and Korean.

Is my data private and secure?

Yes. All processing happens on our dedicated GPU servers. We do not store your text input or generated audio after delivery. Uploaded voice samples for cloning are used only for the current session and are not retained. We never share your data with third parties or use it to train models.

Can I use the generated audio commercially?

Yes. All audio generated on TTS.ai is yours to use commercially, including for YouTube videos, podcasts, audiobooks, apps, advertisements, and products. Our models are open source under permissive licenses (MIT, Apache 2.0). No royalties or attribution required.