VoxCPM
VoxCPM is a tokenizer-free Text-to-Speech system that directly generates continuous speech representations via an end-to-end diffusion autoregressive architecture, bypassing discrete tokenization to achieve highly natural and expressive synthesis. VoxCPM2 is the latest major release, a 2B parameter model trained on over 2 million hours of multilingual speech data, now supporting 30 languages, Voice Design, Controllable Voice Cloning, and 48kHz studio-quality audio output. Built on a MiniCPM-4 backbone. 30-Language Multilingual, Input text in any of the 30 supported languages and synthesize directly, no language tag needed Voice Design, Create a brand-new voice from a natural-language description alone (gender, age, tone, emotion, pace …), no reference audio required Controllable Cloning, Clone any voice from a short reference clip, with optional style guidance to steer emotion, pace, and expression while preserving the original timbre Ultimate Cloning, Reproduce every vocal nuance: provide both reference audio and its transcript, and the model continues seamlessly from the reference, faithfully preserving every vocal detail, timbre, rhythm, emotion, and style (same as VoxCPM1.5) 48kHz High-Quality Audio, Accepts 16kHz reference audio and directly outputs 48kHz studio-quality audio via AudioVAE V2's asymmetric encode/decode design, with built-in super-resolution, no external upsampler needed Context-Aware Synthesis, Automatically infers appropriate prosody and expressiveness from text content Real-Time Streaming, RTF as low as ~0.3 on NVIDIA RTX 4090, and ~0.13 accelerated by Nano-vLLM or vLLM-Omni, official vLLM omni-modal serving for VoxCPM2 with PagedAttention and an OpenAI-compatible API Fully Open-Source & Commercial-Ready, Weights and code released under the Apache-2.0 license, free for commercial use Chinese Dialect: 四川话, 粤语, 吴语, 东北话, 河南话, 陕西话, 山东话, 天津话, 闽南话 [2026.04] We release VoxCPM2, 2B, 30 languages, Voice Design & Controllable Voice Cloning, 48kHz audio output! Weights Docs Playground Technical Report [2025.12] Open-source VoxCPM1.5 weights with SFT & LoRA fine-tuning. ( #1 GitHub Trending) [2025.09] Release VoxCPM Technical Report. [2025.09] Open-source VoxCPM-0.5B weights ( #1 HuggingFace Trending)
View VoxCPM on GitHub
VoxCPM is a tokenizer-free Text-to-Speech system that directly generates continuous speech representations via an end-to-end diffusion autoregressive architecture, bypassing discrete tokenization to achieve highly natural and expressive synthesis.
VoxCPM2 is the latest major release, a 2B parameter model trained on over 2 million hours of multilingual speech data, now supporting 30 languages, Voice Design, Controllable Voice Cloning, and 48kHz studio-quality audio output. Built on a MiniCPM-4 backbone. 30-Language Multilingual, Input text in any of the 30 supported languages and synthesize directly, no language tag needed Voice Design, Create a brand-new voice from a natural-language description alone (gender, age, tone, emotion, pace …), no reference audio required Controllable Cloning, Clone any voice from a short reference clip, with optional style guidance to steer emotion, pace, and expression while preserving the original timbre Ultimate Cloning, Reproduce every vocal nuance: provide both reference audio and its transcript, and the model continues seamlessly from the reference, faithfully preserving every vocal detail, timbre, rhythm, emotion, and style (same as VoxCPM1.5) 48kHz High-Quality Audio, Accepts 16kHz reference audio and directly outputs 48kHz studio-quality audio via AudioVAE V2's asymmetric encode/decode design, with built-in super-resolution, no external upsampler needed Context-Aware Synthesis, Automatically infers appropriate prosody and expressiveness from text content Real-Time Streaming, RTF as low as ~0.3 on NVIDIA RTX 4090, and ~0.13 accelerated by Nano-vLLM or vLLM-Omni, official vLLM omni-modal serving for VoxCPM2 with PagedAttention and an OpenAI-compatible API Fully Open-Source & Commercial-Ready, Weights and code released under the Apache-2.0 license, free for commercial use
Chinese Dialect: 四川话, 粤语, 吴语, 东北话, 河南话, 陕西话, 山东话, 天津话, 闽南话 [2026.04] We release VoxCPM2, 2B, 30 languages, Voice Design & Controllable Voice Cloning, 48kHz audio output! Weights Docs Playground Technical Report [2025.12] Open-source VoxCPM1.5 weights with SFT & LoRA fine-tuning. ( #1 GitHub Trending) [2025.09] Release VoxCPM Technical Report. [2025.09] Open-source VoxCPM-0.5B weights ( #1 HuggingFace Trending)
VoxCPM at a glance
| Stars | 38k |
|---|---|
| Forks | 4.3k |
| Language | Python |
| License | Apache-2.0 |
| Last update | 2026-09-02 |
| Contributors | 32 |
How to install VoxCPM
bash pip install voxcpm
Where VoxCPM is listed
Navid Moazzez
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