[happy] Welcome! Bring your applications to life with expressive voices that can whisper secrets, crack jokes, or shout with excitement... Just type your line, pick a voice like Mark or Hades, and hit Generate to play it back.

[sad] Tom broke up with me last week. I'm still feeling lost.

[clear_throat] In a realm where magic flows like rivers and dragons soar through crimson skies, a hero's journey begins with a single step into the unknown.

$5 per million characters—just 5% of competitors’ pricing—with no compromises on quality

Launched at #1 on Hugging Face TTS Arena with clearer speech, lower WER, and higher SIM than leading systems.

Multiple languages including English, Spanish, French, Korean, and Chinese, all with native-speaker quality.

Create custom voices instantly from 2-15 seconds of audio, or fine-tune a professionally cloned voice.

Sub-250 ms latency optimized for real-time conversational AI with streaming support

Add emotion, delivery style, and non-verbal sounds to make speech more expressive and natural.

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    <div class="px-3 py-2  ">Version</div>
    <div class="px-3 py-2 ">Inworld-TTS-1</div>
    <div class="px-3 py-2  ">Inworld-TTS-1-max</div>
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    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">Radically accessible pricing</div>
    <div class="px-3 py-3 border-b  border-gray-200 ">$5/1M characters <span class="text-gray-500"><br/>(≈ $0.25 per audio-hour)</span></div>
    <div class="px-3 py-3 border-b border-gray-200 ">$10/1M characters <span class="text-gray-500"><br/>(≈ $0.50 per audio-hour)</span></div>

    
    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">Power</div>
    <div class="px-3 py-3 border-b  border-gray-200 ">
      <span style="display:inline-block;width:0.5rem;height:0.5rem;background-color:#0f6a39;border-radius:50%;margin-right:6px;"></span>
      <span style="display:inline-block;width:0.5rem;height:0.5rem;background-color:#0f6a39;border-radius:50%;margin-right:6px;"></span>
      <span style="display:inline-block;width:0.5rem;height:0.5rem;border:1.5px solid #0f6a39;border-radius:50%;"></span>
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    <div class="px-3 py-3 border-b border-gray-200 ">
      <span style="display:inline-block;width:0.5rem;height:0.5rem;background-color:#0f6a39;border-radius:50%;margin-right:6px;"></span>
      <span style="display:inline-block;width:0.5rem;height:0.5rem;background-color:#0f6a39;border-radius:50%;margin-right:6px;"></span>
      <span style="display:inline-block;width:0.5rem;height:0.5rem;background-color:#0f6a39;border-radius:50%;"></span>
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    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">State-of-the-art quality<br/>(WER & similarity)</div>
    <div class="px-3 py-3 border-b  border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>
    <div class="px-3 py-3 border-b border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>

    
    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">Real-time latency</div>
    <div class="px-3 py-3 border-b  border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>
    <div class="px-3 py-3 border-b border-gray-200 ">
      <span class="inline-flex text-xs ">Soon</span>
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    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">Multilingual <br/></div>
    <div class="px-3 py-3 border-b  border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>
    <div class="px-3 py-3 border-b border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>

    
    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">Professional voice cloning <br/>(custom fine-tuning)</div>
    <div class="px-3 py-3 border-b  border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>
    <div class="px-3 py-3 border-b border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>

    
    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">Embedded safeguards</div>
    <div class="px-3 py-3 border-b  border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>
    <div class="px-3 py-3 border-b border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>

    
    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">SOC2 Type II</div>
    <div class="px-3 py-3 border-b  border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>
    <div class="px-3 py-3 border-b border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>

    
    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">On-Premise deployments</div>
    <div class="px-3 py-3 border-b  border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>
    <div class="px-3 py-3 border-b border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>

    
    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">Open-source training<br/>& modeling code</div>
    <div class="px-3 py-3 border-b  border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>
    <div class="px-3 py-3 border-b border-gray-200 "><svg style="fill:var(--new_green_accent); height: 1rem; width:1rem;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><path d="M530.8 134.1C545.1 144.5 548.3 164.5 537.9 178.8L281.9 530.8C276.4 538.4 267.9 543.1 258.5 543.9C249.1 544.7 240 541.2 233.4 534.6L105.4 406.6C92.9 394.1 92.9 373.8 105.4 361.3C117.9 348.8 138.2 348.8 150.7 361.3L252.2 462.8L486.2 141.1C496.6 126.8 516.6 123.6 530.9 134z"/></svg></div>

    
    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">Free zero-shot voice cloning</div>
    <div class="px-3 py-3 border-b  border-gray-200 ">
    <span class="inline-flex text-xs ">Experimental</span>
    </div>
    <div class="px-3 py-3 border-b border-gray-200 ">
    <span class="inline-flex text-xs ">Experimental</span>
    </div>

    
    <div class="px-3 py-3 font-medium border-b  border-gray-200 ">Audio markups <br/>(emotion/style/non-verbals)</div>
    <div class="px-3 py-3 border-b  border-gray-200 ">
      <span class="inline-flex text-xs ">Experimental</span>
    </div>
    <div class="px-3 py-3 border-b border-gray-200 ">
      <span class="inline-flex  text-xs ">Experimental</span>
    </div>

    
    <div class="px-3 py-3 font-medium  border-gray-200 ">Cross-lingual <br/>(same voice, language switch)</div>
    <div class="px-3 py-3  border-gray-200 ">
    <span class="inline-flex  text-xs ">Experimental</span>
    </div>
    <div class="px-3 py-3">
    <span class="inline-flex  text-xs ">Experimental</span>
    </div>
  </div>
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Explore our latest research advancing the state of the art in speech synthesis, voice cloning, and real-time TTS.

We’ve open-sourced the full training framework behind Inworld TTS‑1—everything from codec to SpeechLM fine-tuning—so you can build your own high-quality TTS models faster.

Inworld + LiveKit: Unlocking studio-quality voice AI for real-time experiences at scale

Inworld + NLX: Enabling multi-modal consumer experiences with SOTA voice AI

Inworld meets Pipecat: Raising the bar for realtime voice AI

Inworld + Vapi: Powering the next generation of expressive, real-time voice agents

Inworld easily integrates with any existing stack or provider (OpenAI, Anthropic, Google, etc.) via one API key.  Available to everyone now.

State-of-the-art voice AI at a radically accessible price. Instant voice cloning, rich multilingual support, real-time streaming, emotion and non‑verbal control—all for just $5 per million characters.

Inworld TTS

Features

Radically accessible pricing

State-of-the-art Quality

Multi-lingual

Voice Cloning

Blazingly fast

Voice tags

Research

Publications

Open source

Integrations

Real-time web and mobile voice AI with low latency and streaming.

No-code/low-code platform for multichannel voice experiences.

Open-source video/audio API with streaming TTS for interactive apps.

Cloud telephony for voice agents with PSTN and SIP support.

Inworld is easy to build with