OpenBMB Releases VoxCPM2, a Free Self-Hosted AI Voice Model Supporting 30 Languages

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OpenBMB launched VoxCPM2 in April 2026, a 2-billion-parameter, Apache-2.0 licensed text-to-speech model that runs entirely on a user's own hardware. The model supports voice cloning from short audio clips, text-prompted voice design, and standard speech synthesis across 30 languages, outputting audio at 48 kHz. Unlike token-based systems, VoxCPM2 uses a tokenizer-free diffusion-autoregressive architecture, which its developers say better preserves natural speech qualities like pacing and emotion. It integrates with an OpenAI-compatible API endpoint, meaning developers can switch from hosted services such as ElevenLabs largely by changing a base URL. While ElevenLabs is noted for greater consistency and polish, VoxCPM2 eliminates per-character fees and keeps user data off third-party networks for routine generation workloads.

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