01
What Tencent released
Tencent-Hunyuan open-sourced AuK on September 9, 2026, with code and public model weights for the 1.5B Base model and AuK-Flash. Tencent describes Flash as a distilled checkpoint for fixed four-step inference.
The repository includes CLI and Python inference, Gradio, official ComfyUI integration, prompt-enhancer tooling and a fine-tuning pipeline. A local Python interface is not the same thing as a hosted commercial API; no universal managed API price is documented in the release.
02
One interface for many speech tasks
AuK exposes zero-shot and instruction TTS, speech-content and lyric editing, pitch, speed and volume changes, emotion and timbre edits, de-accenting, nonverbal edits, whisper conversion, enhancement, speech and music separation, and target-speaker extraction through natural-language instructions.
That breadth is a documented capability list, not an independent quality ranking. Listening quality, identity preservation, language coverage and artifact rates still need task-specific evaluation.
03
Local setup and license
Tencent documents Python 3.10 and separate downloads for AuK or AuK-Flash plus Qwen2.5-Omni-3B as the MLLM encoder. The diffusion checkpoint, encoder and VAE are separate runtime pieces, and Tencent does not publish one universal minimum-VRAM requirement.
The repository license explicitly applies MIT terms to the publicly released training code, inference code, parameters and weights. Teams should still review required dependency licenses and exercise consent and rights controls for voice cloning or transformation.
04
Choose the right practical guide
For installation and weights, use How to Run Tencent AuK Locally. For task design, use the speech editing workflow guide.
Creators who prefer nodes can use the official ComfyUI integration guide. Tencent currently documents a 30-second source-plus-target sequence limit for that ComfyUI integration, so do not generalize it into a permanent model-wide duration limit.
Sources
Primary and supporting sources
Facts were rechecked against the linked sources immediately before publication. Pricing, product availability and rollout status can change.