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Inworld TTS-1-Max
Inworld TTS-1-Max is a high-fidelity, transformer-based neural text-to-speech model optimized for interactive and emotionally expressive voice synthesis.
Free $1 Tokens for New Members
Text to Speech
                                        const axios = require('axios').default;

const api = axios.create({
  baseURL: 'https://api.ai.cc/v1',
  headers: { Authorization: 'Bearer ' },
});

const main = async () => {
  const response = await api.post('/tts', {
    model: 'inworld/tts-1-max',
    text: 'OpenAI TTS are fast and powerful language models. Use it to convert text to natural sounding spoken text.',
    voice: 'coral',
  });

  console.log('Audio URL:', response.data.audio.url);
  console.log('Characters:', response.data.usage.characters);
};

main();

                                
                                        import requests


def main():
    url = "https://api.ai.cc/v1/tts"
    headers = {
        "Authorization": "Bearer ",
    }
    payload = {
        "model": "inworld/tts-1-max",
        "text": "OpenAI TTS are fast and powerful language models. Use it to convert text to natural sounding spoken text.",
        "voice": "coral"
    }

    response = requests.post(url, headers=headers, json=payload)
    data = response.json()

    print("Audio URL:", data["audio"]["url"])
    print("Characters:", data["usage"]["characters"])


main()
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Inworld TTS-1-Max

Product Detail

Inworld TTS-1-Max: Revolutionizing Text-to-Speech

Discover the Inworld TTS-1-Max API, a state-of-the-art, Transformer-based autoregressive text-to-speech (TTS) model. Engineered to deliver unparalleled speech quality and expressiveness, it stands as the premier choice for professional and commercial applications demanding high-resolution, nuanced voice synthesis.

With an impressive 8.8 billion parameters, TTS-1-Max pushes the boundaries of natural language generation, producing voices that are virtually indistinguishable from human speech.

Technical Specifications & Performance

  • ⚙️ Architecture: Advanced Transformer-based autoregressive model
  • 🔢 Parameters: A massive 8.8 billion (the largest in the Inworld TTS-1 family)
  • 🔊 Audio Output: Crystal-clear, high-resolution 48 kHz speech
  • 🌐 Supported Languages: Comprehensive support for 11 major languages
  • Inference Speed: Achieves approximately 8,000 tokens/sec per GPU on a 32 H100 setup, ensuring efficiency.

Leading the Quality Leaderboards

The TTS-1-Max model consistently ranks as a top performer on independent quality leaderboards, showcasing its superior output and naturalness in various evaluations.

Inworld TTS-1-Max Performance Chart

Key Features for Unrivaled Speech Synthesis

  • Superior Naturalness & Expressiveness: Leverages large-scale parameterization for incredibly natural and emotionally rich voice outputs.
  • 🗣️ High-Fidelity Multilingual Synthesis: Generate speech with exceptional clarity and accuracy across 11 diverse languages, ideal for global applications.
  • 🎭 Advanced Emotional Modulation: Fine-tune speech styles with robust emotional modulation capabilities, adding profound nuance and depth to every utterance.
  • 👂 Realistic Non-Verbal Sounds & Vocalizations: Enhances speech realism with seamless support for various non-verbal cues, making AI voices more lifelike.
  • 👤 Pure In-Context Voice Cloning: Achieves voice cloning without requiring any pre-recorded speaker data, relying purely on sophisticated in-context learning.

Transparent & Competitive API Pricing

💰 Experience premium speech synthesis with straightforward and transparent pricing:

  • Cost: Only $10.5 per 1 Million characters generated.
  • Estimated per minute cost: Approximately $0.0105 per minute of high-quality generated speech.

Integrate with Ease: Code Sample

Implementing Inworld TTS-1-Max into your applications is seamless. Below is a representation of the API snippet for quick integration:

<snippet data-docs="https://docs.ai.cc/api-references/speech-models/text-to-speech/inworld/tts-1-max" snippet data-name="voice.tts-openai" data-model="inworld/tts-1-max"></snippet>

For comprehensive integration details, advanced parameters, and more code examples, please refer to the official Inworld TTS-1-Max API Documentation.

Inworld TTS-1-Max: Competitive Edge

Understand how Inworld TTS-1-Max distinguishes itself from other leading text-to-speech models in the market, offering specialized advantages for various use cases.

🆚 vs. Inworld TTS-1

TTS-1-Max delivers superior expressiveness and naturalness thanks to its significantly larger 8.8 billion parameter scale (compared to TTS-1's 1.6 billion), making it ideal for premium content like audiobooks. In contrast, TTS-1 prioritizes real-time speed (~153 characters/second vs. TTS-1-Max's ~69 characters/second), making it better suited for highly interactive applications.

🆚 vs. ElevenLabs Multilingual V2

In quality tests, TTS-1-Max achieves a 59.1% head-to-head win rate, offering finer emotional granularity and robust support for non-verbal sounds via markups. While ElevenLabs provides strong multilingual cloning, TTS-1-Max leads in raw audio resolution and the purity of its in-context learning approach.

🆚 vs. MiniMax-Speech

TTS-1-Max prioritizes peak voice quality and fidelity across its 11 supported languages, demonstrating leadership in benchmarked naturalness and emotional prosody control. MiniMax-Speech, conversely, emphasizes broader 32-language zero-shot cloning capabilities and rapid one-shot voice replication.

Frequently Asked Questions (FAQ)

What is Inworld TTS-1-Max?

Inworld TTS-1-Max is a cutting-edge, Transformer-based autoregressive text-to-speech API, featuring 8.8 billion parameters. It's designed for professional and commercial applications demanding superior speech quality and expressiveness.

What are its key technical features?

It offers an autoregressive Transformer architecture, 8.8 billion parameters, 48 kHz high-resolution audio, support for 11 major languages, and an inference speed of approximately 8,000 tokens/sec per GPU.

How does TTS-1-Max achieve high expressiveness?

Its exceptional expressiveness and naturalness stem from its large-scale 8.8 billion parameterization, coupled with emotional modulation capabilities and support for non-verbal sounds, creating highly nuanced speech.

What is the pricing structure for the TTS-1-Max API?

The API is priced at $10.5 per 1 million characters, which translates to an estimated cost of about $0.0105 per minute of generated speech.

What are the ideal use cases for Inworld TTS-1-Max?

It's perfectly suited for professional voice-overs, dubbing, advanced conversational AI, multilingual media content production, interactive voice applications, audiobooks, gaming, and immersive virtual environments where superior voice quality and expressiveness are paramount.

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