VoxCPM
Tokenizer-free TTS for true-to-life voice
VoxCPM launched on September 19, 2025 with 9 votes, #1,272 of 8,160 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
VoxCPM is a new open-source, tokenizer-free TTS model. By modeling speech in a continuous space, it overcomes the limitations of discrete tokens to deliver highly expressive, context-aware speech generation and incredibly realistic zero-shot voice cloning.
Abstract: We present VoxCPM, an end-to-end speech generation model based on diffusion autoregressive modeling. Built upon the efficient large language model MiniCPM-4, VoxCPM extends its capabilities to speech synthesis by combining hierarchical language modeling, finite scalar quantization (FSQ), and local Diffusion Transformers (DiT) to overcome the information loss of token methods while improving the stability of continuous autoregressive representations. Leveraging the structured semi-discrete representations produced by FSQ, the model implicitly disentangles high-level semantics from fine-grained acoustic features, enabling more natural, faithful, and prosodically expressive speech.…from openbmb.github.io
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