Free AI Text to Speech

22+ open-source models, 100+ voices, 32+ languages. No account required.

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22+ AI Voice Models

The most comprehensive collection of open-source TTS models in one platform

KokoroKokoro Free

Kokoro is an 82 million parameter text-to-speech model that punches well above its weight class. Despite its tiny size, it produces remarkably natural and expressive speech. Kokoro supports multiple languages including English, Japanese, Chinese, and Korean with a variety of expressive voices. It runs incredibly fast — generating audio nearly 100x faster than real-time on a GPU.

Best for: High-quality TTS with minimal latency, streaming applications

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PiperPiper Free

Piper is a lightweight text-to-speech engine developed by Rhasspy that uses VITS and larynx architectures. It runs entirely on CPU, making it ideal for edge devices, home automation, and applications requiring offline TTS. With over 100 voices across 30+ languages, Piper delivers natural-sounding speech at real-time speeds even on a Raspberry Pi 4.

Best for: Quick previews, accessibility, and embedded applications

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VITSVITS Free

VITS (Variational Inference with adversarial learning for end-to-end Text-to-Speech) is a parallel end-to-end TTS method that generates more natural sounding audio than current two-stage models. It adopts variational inference augmented with normalizing flows and an adversarial training process, achieving a significant improvement in naturalness.

Best for: General-purpose text-to-speech with natural prosody

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MeloTTSMeloTTS Free

MeloTTS by MyShell.ai is a multilingual TTS library supporting English (American, British, Indian, Australian), Spanish, French, Chinese, Japanese, and Korean. It is extremely fast, processing text at near real-time speed on CPU alone. MeloTTS is designed for production use and supports both CPU and GPU inference.

Best for: Production applications needing fast, multilingual TTS

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BarkBark Standard

Transformer-based text-to-audio model that generates realistic speech, music, and sound effects.

Developer: Suno · License: MIT

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Bark SmallBark Small Standard

Lighter version of Bark with faster inference and lower memory usage.

Developer: Suno · License: MIT

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CosyVoice 2CosyVoice 2 Standard

Alibaba's scalable streaming TTS with human-parity naturalness and near-zero latency.

Developer: Alibaba (Tongyi Lab) · License: Apache 2.0

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Dia TTSDia TTS Standard

Multi-speaker dialog generation model that creates natural conversations between speakers.

Developer: Nari Labs · License: Apache 2.0

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Parler TTSParler TTS Standard

Describe the voice you want in natural language and Parler generates matching speech.

Developer: Hugging Face · License: Apache 2.0

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IndexTTS-2IndexTTS-2 Standard

Zero-shot TTS with fine-grained emotion control and high expressiveness.

Developer: Index Team · License: Apache 2.0

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Spark TTSSpark TTS Standard

Voice cloning TTS with controllable emotion and speaking style via prompts.

Developer: SparkAudio · License: Apache 2.0

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GPT-SoVITSGPT-SoVITS Standard

Few-shot voice cloning TTS that replicates any voice from just 5 seconds of audio.

Developer: RVC-Boss · License: MIT

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OrpheusOrpheus Standard

Human-level emotional TTS model trained on 100K hours of speech data.

Developer: Canopy Labs · License: Llama 3.2 Community

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Qwen3 TTSQwen3 TTS Standard

Alibaba's multilingual TTS with voice cloning, preset voices, and voice design from text.

Developer: Alibaba (Qwen) · License: Apache 2.0

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ChatterboxChatterbox Premium

State-of-the-art zero-shot voice cloning with emotion control from Resemble AI.

Quality:

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Tortoise TTSTortoise TTS Premium

Multi-voice text-to-speech focused on quality with autoregressive architecture.

Quality:

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StyleTTS 2StyleTTS 2 Premium

Human-level text-to-speech through style diffusion and adversarial training.

Quality:

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OpenVoiceOpenVoice Premium

Instant voice cloning with granular control over style, emotion, and accent.

Quality:

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CosyVoice 2CosyVoice 2

Alibaba's scalable streaming TTS with human-parity naturalness and near-zero latency.

Languages: en, zh, ja, ko, fr, de, it, es

Clone Voice

IndexTTS-2IndexTTS-2

Zero-shot TTS with fine-grained emotion control and high expressiveness.

Languages: en, zh

Clone Voice

Spark TTSSpark TTS

Voice cloning TTS with controllable emotion and speaking style via prompts.

Languages: en, zh

Clone Voice

GPT-SoVITSGPT-SoVITS

Few-shot voice cloning TTS that replicates any voice from just 5 seconds of audio.

Languages: en, zh, ja, ko

Clone Voice

ChatterboxChatterbox

State-of-the-art zero-shot voice cloning with emotion control from Resemble AI.

Languages: en

Clone Voice

Tortoise TTSTortoise TTS

Multi-voice text-to-speech focused on quality with autoregressive architecture.

Languages: en

Clone Voice

OpenVoiceOpenVoice

Instant voice cloning with granular control over style, emotion, and accent.

Languages: en, zh, ja, ko, fr, de, es, it

Clone Voice

Qwen3 TTSQwen3 TTS

Alibaba's multilingual TTS with voice cloning, preset voices, and voice design from text.

Languages: en, zh, ja, ko, de, fr, ru, pt, es, it

Clone Voice

Developer-First API

OpenAI-compatible REST API. One endpoint, 22+ models. Streaming support for real-time applications.

  • OpenAI-compatible format
  • Streaming TTS for real-time apps
  • Batch processing for large jobs
  • Webhook notifications
View API Docs
Python
import requests

response = requests.post(
    "https://api.tts.ai/v1/tts/",
    headers={"Authorization": "Bearer sk-tts-xxx"},
    json={
        "model": "kokoro",
        "text": "Hello from TTS.ai!",
        "voice": "af_bella",
    }
)

with open("output.mp3", "wb") as f:
    f.write(response.content)

Simple, Transparent Pricing

Start free. Scale as you grow.

Free

$0

50 credits

  • Kokoro, Piper, VITS, MeloTTS
  • 500 character limit
  • 3 gen/hour (no account)
Sign Up Free

Starter

$9/mo

500 credits/month

  • All 22+ models
  • 5,000 character limit
  • Voice Cloning
Get Started
Most Popular

Pro

$29/mo

2,000 credits/month

  • Everything in Starter
  • API access
  • Priority processing
Get Pro

Enterprise

$99/mo

10,000 credits/month

  • Everything in Pro
  • Bulk API
  • Priority queue
Contact Sales

View all plans including credit packs →

Frequently Asked Questions

TTS.ai is the most comprehensive AI voice platform, offering 22+ text-to-speech models, voice cloning, speech-to-text, and audio tools. All models are open source with no vendor lock-in.

Yes! TTS.ai offers free text-to-speech with Kokoro, Piper, VITS, and MeloTTS models. No account required. Sign up to get 50 free credits and access all models. Paid plans start at $9/month.

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.

Yes. OpenAI-compatible REST API for TTS, STT, voice cloning, and audio tools. Available on Pro ($29/mo) and Enterprise ($99/mo) plans. View documentation at tts.ai/api/.

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.

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.

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.

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.

TTS.ai generates audio in WAV format by default for maximum quality. You can convert to MP3, FLAC, OGG, or M4A using our free Audio Converter tool. The API supports specifying your preferred output format directly in the request.

Upload a short audio sample (as little as 5 seconds) of the voice you want to clone, then type any text to generate speech in that voice. Models like Chatterbox, GPT-SoVITS, and CosyVoice 2 support voice cloning. The cloned voice captures tone, accent, and speaking style.

Free models (Kokoro, Piper, VITS, MeloTTS) require no account and cost zero credits. Standard models (2 credits/1K characters) include Bark, CosyVoice 2, F5-TTS, and Dia. Premium models (4 credits/1K characters) include OpenVoice, Chatterbox, StyleTTS 2, and Tortoise. Paid models generally offer higher quality, more voices, and additional features like voice cloning.

Yes. The API supports batch processing for converting large volumes of text to speech. Submit multiple requests and retrieve results asynchronously using job UUIDs. Enterprise plans ($99/mo) include priority queue access for faster batch processing. Ideal for audiobook production, course content, and large-scale voiceover projects.
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