Instructions to use bytedance-research/ChatTS-14B with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use bytedance-research/ChatTS-14B with Transformers:

# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("text-generation", model="bytedance-research/ChatTS-14B", trust_remote_code=True)
messages = [
    {"role": "user", "content": "Who are you?"},
]
pipe(messages)

# Load model directly
from transformers import AutoModel
model = AutoModel.from_pretrained("bytedance-research/ChatTS-14B", trust_remote_code=True, dtype="auto")

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use bytedance-research/ChatTS-14B with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "bytedance-research/ChatTS-14B"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "bytedance-research/ChatTS-14B",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/bytedance-research/ChatTS-14B

SGLang

How to use bytedance-research/ChatTS-14B with SGLang:

Install from pip and serve model

# Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
    --model-path "bytedance-research/ChatTS-14B" \
    --host 0.0.0.0 \
    --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "bytedance-research/ChatTS-14B",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker images

docker run --gpus all \
    --shm-size 32g \
    -p 30000:30000 \
    -v ~/.cache/huggingface:/root/.cache/huggingface \
    --env "HF_TOKEN=<secret>" \
    --ipc=host \
    lmsysorg/sglang:latest \
    python3 -m sglang.launch_server \
        --model-path "bytedance-research/ChatTS-14B" \
        --host 0.0.0.0 \
        --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "bytedance-research/ChatTS-14B",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Docker Model Runner
How to use bytedance-research/ChatTS-14B with Docker Model Runner:
```
docker model run hf.co/bytedance-research/ChatTS-14B
```

Update tokenizer_config.json

#30

by ZLHe0 - opened Aug 20, 2025

base: refs/heads/main

←

from: refs/pr/30

Discussion Files changed

-0

ZLHe0

Aug 20, 2025

Fix: Add chat_template to tokenizer config

Recent versions of transformers (v4.44+) no longer allow a default chat template.
The latest model revision removed this field, causing errors in vLLM and Hugging Face preprocessing:

ValueError: As of transformers v4.44, default chat template is no longer allowed...

Change
Restored the previous template in tokenizer_config.json:

"chat_template": "{% set system_message = 'You are a helpful assistant.' %}{% if messages[0]['role'] == 'system' %}{% set system_message = messages[0]['content'] %}{% endif %}{% if system_message is defined %}{{ '<|im_start|>system\\n' + system_message + '<|im_end|>\\n' }}{% endif %}{% for message in messages %}{% set content = message['content'] %}{% if message['role'] == 'user' %}{{ '<|im_start|>user\\n' + content + '<|im_end|>\\n<|im_start|>assistant\\n' }}{% elif message['role'] == 'assistant' %}{{ content + '<|im_end|>' + '\\n' }}{% endif %}{% endfor %}"

Result

apply_chat_template works again
vLLM /chat/completions endpoint runs without error
Maintains backward compatibility with earlier formatting

Update tokenizer_config.jsonfd4b0452

xiezhe24

bytedance-research org Aug 20, 2025

Awesome contribution! Thank you for fixing this!

xiezhe24 changed pull request status to merged Aug 20, 2025

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