Chatterbox HD (Resemble AI)
Resemble AI's high-definition text-to-speech model, delivering highly expressive, natural voice synthesis with zero-shot cloning.
Get API keyWhat is Chatterbox HD (Resemble AI)?
Chatterbox HD is a high-definition text-to-speech model developed by Resemble AI. Released as part of the Chatterbox family, it delivers exceptionally expressive, natural-sounding voice synthesis and zero-shot voice cloning from just seconds of reference audio, optimized for realistic human-like speech.
Use Chatterbox HD (Resemble AI) privately on Venice
On Venice, you can access Chatterbox HD with absolute privacy. Venice routes your text-to-speech requests with zero retention, ensuring your synthesized scripts and voice outputs are never stored, profiled, or used to train external models. Experience sovereign, high-fidelity audio generation without Big Tech surveillance.
What can Chatterbox HD (Resemble AI) do?
- •High-definition, studio-quality audio output with realistic human-like intonation.
- •Zero-shot voice cloning capable of replicating a voice from just a few seconds of reference audio.
- •Unique emotion control, allowing users to adjust speech intensity from monotone to highly expressive.
- •Native support for paralinguistic tags (such as [cough], [laugh], [chuckle]) to add lifelike realism.
- •Built-in PerTh watermarking to ensure secure, verifiable synthetic audio generation.
- •Strict character limit of 2,000 characters per individual request.
- •Does not support standard SSML tags like break, whisper, or emphasis.
- •This high-definition variant is proprietary and closed-weights, unlike the base open-source Chatterbox models.
Sample outputs
Generated on Venice with our standard prompt suite — the same scripts we run through every model of this type, so you can judge it like-for-like.
“On Venice, your prompts are processed privately and never stored, profiled, or used to train anyone's model.”
“Wait — so I can run a private voice model with zero data retention, and pay only for what I use? That's genuinely useful.”
“Three… two… one… liftoff! The rocket roared into the night sky as the crowd erupted in cheers.”
How to use Chatterbox HD (Resemble AI) via API
Venice exposes an OpenAI-compatible API. Swap your base URL and call tts-chatterbox-hd.
curl https://api.venice.ai/api/v1/audio/speech \
-H "Authorization: Bearer $VENICE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "tts-chatterbox-hd",
"input": "On Venice, your prompts are processed privately.",
"voice": "af_sky",
"response_format": "mp3"
}' --output speech.mp3Specifications
Pricing
Billed per character on Venice: $50 per 1M characters of synthesized speech.
New Venice accounts include a free daily allowance and 500 welcome credits — no credit card required.
Chatterbox HD (Resemble AI) vs alternatives
| Model | Price (per 1M chars) | Latency | Open weights | Key Strength |
|---|---|---|---|---|
| Chatterbox HD | $50 / 1M chars | ~200-250ms | No | Expressive emotion & cloning |
| ElevenLabs Turbo v2.5 | $62.50 / 1M chars | ~150-200ms | No | Industry-leading realism |
| Kokoro Text to Speech | $3.50 / 1M chars | ~100ms | Yes | Ultra-low cost & open-source |
| Gemini 3.1 Flash TTS | $187.50 / 1M chars | ~200ms | No | Google ecosystem integration |
A premium balance of high-fidelity voice cloning and emotional nuance.
What is Chatterbox HD (Resemble AI) good for?
- •Creating highly realistic voiceovers for video content, podcasts, and audiobooks.
- •Developing low-latency conversational voice agents and interactive virtual assistants.
- •Zero-shot voice cloning for localized content translation while preserving the speaker's original voice.
- •Generating expressive, emotionally nuanced narration for gaming and creative storytelling.
- •Producing secure, watermarked synthetic speech for corporate and enterprise applications.
Prompting tips
- •Keep your text inputs under the 2,000-character limit to avoid truncation.
- •Insert native paralinguistic tags like [laugh] or [gasp] directly into the text for natural pauses and human-like emotion.
- •Use descriptive punctuation (like dashes and ellipses) to guide the model's natural pacing and cadence.
Version history
The original high-quality TTS model with emotion control.
Ultra-fast 350M parameter model with native paralinguistic tags.
CurrentCurrent — High-definition variant delivering enhanced audio fidelity.
Frequently asked questions
Chatterbox HD is a premium, high-definition text-to-speech model developed by Resemble AI. It is designed to generate highly realistic, emotionally expressive human speech and supports zero-shot voice cloning from short audio samples.
Chatterbox HD is priced at $50 per 1 million characters of synthesized speech on Venice. You are billed dynamically based on the exact character count of your text inputs.
While Resemble AI's base Chatterbox family has open-source roots under the MIT license, the high-definition Chatterbox HD variant hosted here is a proprietary, closed-weights model. You can try it on Venice using your daily free credits or paid balance.
Yes, Chatterbox HD supports zero-shot voice cloning. It can replicate a target voice with high accuracy using just a few seconds of reference audio, making it highly efficient for custom voice generation.
Chatterbox HD is more cost-effective at $50 per 1M characters compared to ElevenLabs Turbo v2.5 at $62.50. While ElevenLabs is often considered the gold standard for raw realism, Chatterbox HD offers superior built-in emotion controls and competitive blind-test performance.
Paralinguistic tags are native markers like [cough], [laugh], or [chuckle] that you can insert directly into your text. Chatterbox HD processes these tags to generate realistic non-speech sounds, enhancing the lifelike quality of the audio.
Yes. Venice operates under a strict private, zero-retention policy. Your text prompts and generated audio files are processed securely and are never stored, logged, or used to train AI models.
Chatterbox HD has a maximum limit of 2,000 characters per text-to-speech generation request.
Related models
Run Chatterbox HD (Resemble AI) privately.
No prompt logging. No data used for training. Free to start — no credit card.
