This repository provides the official PyTorch implementation of TaDiCodec, a text-aware diffusion speech tokenizer accepted at NeurIPS 2025. The core contribution is a novel speech codec that achieves ultra-low bitrate (0.0875 kbps at 6.25 Hz) by combining a non-autoregressive Llama encoder, binary spherical quantization (BSQ), and a flow-matching diffusion decoder conditioned on text and prompt speech. The repo also includes token-based zero-shot TTS models: an autoregressive (AR) model using LLMs (Qwen2.5, Phi-3.5) and a masked diffusion (MGM) model. Inference pipelines with automatic model downloading from Hugging Face are provided. Training scripts for the tokenizer are partially implemented (dataloader, trainer class), but TTS model training scripts are incomplete. The project has migrated to a new repository (AmphionTeam/Diffusion-Speech-Tokenizer), and this repo is no longer the primary development branch, though recent commits indicate some ongoing activity.