As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/m/chatterbox/

# Resemble AI Chatterbox (Turbo / Nano / Multilingual V3)

Resemble AI, Chatterbox family. Status: current. Type: speech and audio. Released: 2025-05-28.

## How to call it

| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Hugging Face | `ResembleAI/chatterbox` |  | https://huggingface.co/ResembleAI/chatterbox |
| Hugging Face | `ResembleAI/chatterbox-turbo` |  | https://huggingface.co/ResembleAI/chatterbox-turbo |
| pip | `chatterbox-tts` |  | https://github.com/resemble-ai/chatterbox |
| NVIDIA NIM | `resembleai/chatterbox-multilingual-tts` |  | https://build.nvidia.com/resembleai/chatterbox-multilingual-tts/modelcard |

## Pricing

- Price not published.
- Last checked: 2026-09-29

## Specs

- Input: text, audio
- Output: audio
- Context window: not published
- Max output: not published
- Open weights: yes
- Licence: mit

## Where it stands

- Newer speech and audio models in the registry since its release: 94. The 5 newest:
  - NVIDIA Nemotron 3.5 Transcribe (30B-A4B) (2026-10-28) https://postcutoff.com/m/nemotron-3-5-transcribe/
  - Hy-SimulMT-30B-A3B (2026-10-22) https://postcutoff.com/m/hy-simulmt-30b-a3b/
  - Eleven Realtime v1 Max / Mini (2026-10-20) https://postcutoff.com/m/eleven-realtime-v1-max/
  - Voxtral Mini Transcribe 3 (+ Mini Transcribe Realtime 3) (2026-10-20) https://postcutoff.com/m/voxtral-mini-transcribe-3/
  - Voxtral Small Transcribe 3 (2026-10-20) https://postcutoff.com/m/voxtral-small-transcribe-3/
- Weights are public under a permissive licence (MIT).

## What stands out

- Emotion exaggeration control: Original 0.5B Chatterbox exposes an exaggeration/intensity knob plus CFG; zero-shot cloning from ~5 s. Source: https://github.com/resemble-ai/chatterbox
- Chatterbox-Turbo: one-step decoder, paralinguistic tags (found after launch): 350M params (Dec 2025); speech-token-to-mel decoder distilled from 10 steps to 1; native [laugh], [cough], [chuckle] tags; sub-200 ms production latency. Source: https://huggingface.co/ResembleAI/chatterbox-turbo
- Built-in PerTh watermark: Every output carries Resemble's imperceptible Perth neural watermark that survives MP3 compression and edits. Source: https://github.com/resemble-ai/chatterbox
- Multilingual V3 and Nano (found after launch): Multilingual V3 (0.5B, 23 languages, better speaker similarity, fewer hallucinations) plus single-language fine-tune packs; Chatterbox-Nano (110M, English, ~3x real time on 8 CPU cores). Source: https://github.com/resemble-ai/chatterbox

## Notes

All MIT-licensed. Multilingual (23 langs) first released Sept 2025. Multilingual V3 released 2026-06-10 (Resemble post; V3 T3 weights first pushed to HF 2026-04-22): same 0.5B Llama backbone, training data up from 25.6k to 36.7k hours, 25 languages incl. 4 dialects and 6 tuned Language Pack models, PerTh watermark on by default; Resemble reports CER under 0.20% for Italian/German but ~71-75% for Korean/Vietnamese (not production-ready); NVIDIA NIM claims 2x-39x throughput. Chatterbox-Nano HF repo created 2026-04-14 (public announcement date not found). Artificial Analysis lists Chatterbox at ~1020 Elo (secondary source). Resemble's pricing page now centres on deepfake detection; hosted TTS price not verified.

Sources: https://www.resemble.ai/resources/chatterbox-multilingual-v3-tts-with-embedded-watermarking-for-25-languages , https://huggingface.co/ResembleAI/chatterbox-nano , https://github.com/resemble-ai/chatterbox , https://www.resemble.ai/learn/models/chatterbox-multilingual , https://huggingface.co/ResembleAI/chatterbox-turbo

Model page: https://postcutoff.com/m/chatterbox/