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@@ -839,6 +839,8 @@
         title: CSM
       - local: model_doc/dac
         title: dac
+      - local: model_doc/dia
+        title: Dia
       - local: model_doc/encodec
         title: EnCodec
       - local: model_doc/fastspeech2_conformer
 
@@ -350,6 +350,10 @@ The following auto classes are available for the following audio tasks.
 
 [[autodoc]] AutoModelForTextToWaveform
 
+### AutoModelForAudioTokenization
+
+[[autodoc]] AutoModelForAudioTokenization
+
 ## Multimodal
 
 The following auto classes are available for the following multimodal tasks.
 
@@ -0,0 +1,162 @@
+<!--Copyright 2025 The HuggingFace Team. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License.
+
+⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
+rendered properly in your Markdown viewer.
+
+-->
+
+# Dia
+
+<div style="float: right;">
+    <div class="flex flex-wrap space-x-1">
+        <img alt="PyTorch" src="https://img.shields.io/badge/PyTorch-DE3412?style=flat&logo=pytorch&logoColor=white">
+        <img alt="FlashAttention" src="https://img.shields.io/badge/%E2%9A%A1%EF%B8%8E%20FlashAttention-eae0c8?style=flat">
+        <img alt="SDPA" src="https://img.shields.io/badge/SDPA-DE3412?style=flat&logo=pytorch&logoColor=white">
+    </div>
+</div>
+
+## Overview
+
+Dia is an opensource text-to-speech (TTS) model (1.6B parameters) developed by [Nari Labs](https://huggingface.co/nari-labs).
+It can generate highly realistic dialogue from transcript including nonverbal communications such as laughter and coughing.
+Furthermore, emotion and tone control is also possible via audio conditioning (voice cloning).
+
+**Model Architecture:**
+Dia is an encoder-decoder transformer based on the original transformer architecture. However, some more modern features such as
+rotational positional embeddings (RoPE) are also included. For its text portion (encoder), a byte tokenizer is utilized while
+for the audio portion (decoder), a pretrained codec model [DAC](./dac.md) is used - DAC encodes speech into discrete codebook
+tokens and decodes them back into audio.
+
+## Usage Tips
+
+### Generation with Text
+
+```python
+from transformers import AutoProcessor, DiaForConditionalGeneration
+
+torch_device = "cuda"
+model_checkpoint = "buttercrab/dia-v1-1.6b"
+
+text = ["[S1] Dia is an open weights text to dialogue model."]
+processor = AutoProcessor.from_pretrained(model_checkpoint)
+inputs = processor(text=text, padding=True, return_tensors="pt").to(torch_device)
+
+model = DiaForConditionalGeneration.from_pretrained(model_checkpoint).to(torch_device)
+outputs = model.generate(**inputs, max_new_tokens=256)  # corresponds to around ~2s
+
+# save audio to a file
+outputs = processor.batch_decode(outputs)
+processor.save_audio(outputs, "example.wav")
+
+```
+
+### Generation with Text and Audio (Voice Cloning)
+
+```python
+from datasets import load_dataset, Audio
+from transformers import AutoProcessor, DiaForConditionalGeneration
+
+torch_device = "cuda"
+model_checkpoint = "buttercrab/dia-v1-1.6b"
+
+ds = load_dataset("hf-internal-testing/dailytalk-dummy", split="train")
+ds = ds.cast_column("audio", Audio(sampling_rate=44100))
+audio = ds[-1]["audio"]["array"]
+# text is a transcript of the audio + additional text you want as new audio
+text = ["[S1] I know. It's going to save me a lot of money, I hope. [S2] I sure hope so for you."]
+
+processor = AutoProcessor.from_pretrained(model_checkpoint)
+inputs = processor(text=text, audio=audio, padding=True, return_tensors="pt").to(torch_device)
+prompt_len = processor.get_audio_prompt_len(inputs["decoder_attention_mask"])
+
+model = DiaForConditionalGeneration.from_pretrained(model_checkpoint).to(torch_device)
+outputs = model.generate(**inputs, max_new_tokens=256)  # corresponds to around ~2s
+
+# retrieve actually generated audio and save to a file
+outputs = processor.batch_decode(outputs, audio_prompt_len=prompt_len)
+processor.save_audio(outputs, "example_with_audio.wav")
+```
+
+### Training
+
+```python
+from datasets import load_dataset, Audio
+from transformers import AutoProcessor, DiaForConditionalGeneration
+
+torch_device = "cuda"
+model_checkpoint = "buttercrab/dia-v1-1.6b"
+
+ds = load_dataset("hf-internal-testing/dailytalk-dummy", split="train")
+ds = ds.cast_column("audio", Audio(sampling_rate=44100))
+audio = ds[-1]["audio"]["array"]
+# text is a transcript of the audio
+text = ["[S1] I know. It's going to save me a lot of money, I hope."]
+
+processor = AutoProcessor.from_pretrained(model_checkpoint)
+inputs = processor(
+    text=text,
+    audio=audio,
+    generation=False,
+    output_labels=True,
+    padding=True,
+    return_tensors="pt"
+).to(torch_device)
+
+model = DiaForConditionalGeneration.from_pretrained(model_checkpoint).to(torch_device)
+out = model(**inputs)
+out.loss.backward()
+```
+
+
+This model was contributed by [Jaeyong Sung](https://huggingface.co/buttercrab), [Arthur Zucker](https://huggingface.co/ArthurZ),
+and [Anton Vlasjuk](https://huggingface.co/AntonV). The original code can be found [here](https://github.com/nari-labs/dia/).
+
+
+## DiaConfig
+
+[[autodoc]] DiaConfig
+
+## DiaDecoderConfig
+
+[[autodoc]] DiaDecoderConfig
+
+## DiaEncoderConfig
+
+[[autodoc]] DiaEncoderConfig
+
+## DiaTokenizer
+
+[[autodoc]] DiaTokenizer
+    - __call__
+
+## DiaFeatureExtractor
+
+[[autodoc]] DiaFeatureExtractor
+    - __call__
+
+## DiaProcessor
+
+[[autodoc]] DiaProcessor
+    - __call__
+    - batch_decode
+    - decode
+
+## DiaModel
+
+[[autodoc]] DiaModel
+    - forward
+
+## DiaForConditionalGeneration
+
+[[autodoc]] DiaForConditionalGeneration
+    - forward
+    - generate
@@ -271,7 +271,6 @@ def __init__(self, **kwargs):
         self.pad_token_id = kwargs.pop("pad_token_id", None)
         self.eos_token_id = kwargs.pop("eos_token_id", None)
         self.sep_token_id = kwargs.pop("sep_token_id", None)
-
         self.decoder_start_token_id = kwargs.pop("decoder_start_token_id", None)
 
         # task specific arguments