qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855

Instructions to use seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855 with Transformers:

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

pipe = pipeline("text-generation", model="seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855")
messages = [
    {"role": "user", "content": "Who are you?"},
]
pipe(messages)

# Load model directly
from transformers import AutoTokenizer, AutoModelForCausalLM

tokenizer = AutoTokenizer.from_pretrained("seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855")
model = AutoModelForCausalLM.from_pretrained("seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855", device_map="auto")
messages = [
    {"role": "user", "content": "Who are you?"},
]
inputs = tokenizer.apply_chat_template(
	messages,
	add_generation_prompt=True,
	tokenize=True,
	return_dict=True,
	return_tensors="pt",
).to(model.device)

outputs = model.generate(**inputs, max_new_tokens=40)
print(tokenizer.decode(outputs[0][inputs["input_ids"].shape[-1]:]))

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855 with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855

SGLang

How to use seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855 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 "seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855" \
    --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": "seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855",
		"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 "seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855" \
        --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": "seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Docker Model Runner
How to use seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855 with Docker Model Runner:
```
docker model run hf.co/seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855
```

qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855

This model is a fine-tuned version of W-61/qwen3-8b-base-sft-ultrachat-4xh200-batch-128 on the HuggingFaceH4/ultrafeedback_binarized dataset. It achieves the following results on the evaluation set:

Loss: 2.0046
Rewards/chosen: -2.5849
Rewards/rejected: -2.4766
Rewards/accuracies: 0.5280
Rewards/margins: -0.1083
Logps/rejected: -247.6589
Logps/chosen: -258.4861
Logits/rejected: 2.2625
Logits/chosen: 2.2470
Nll Loss: 0.8903

Model description

More information needed

Intended uses & limitations

More information needed

Training and evaluation data

More information needed

Training procedure

Training hyperparameters

The following hyperparameters were used during training:

learning_rate: 5e-07
train_batch_size: 4
eval_batch_size: 4
seed: 42
distributed_type: multi-GPU
num_devices: 4
gradient_accumulation_steps: 8
total_train_batch_size: 128
total_eval_batch_size: 16
optimizer: Use OptimizerNames.ADAMW_TORCH with betas=(0.9,0.999) and epsilon=1e-08 and optimizer_args=No additional optimizer arguments
lr_scheduler_type: cosine
lr_scheduler_warmup_ratio: 0.1
num_epochs: 1

Training results

Training Loss	Epoch	Step	Validation Loss	Rewards/chosen	Rewards/rejected	Rewards/accuracies	Rewards/margins	Logps/rejected	Logps/chosen	Logits/rejected	Logits/chosen	Nll Loss
16.4792	0.4188	200	2.0281	-2.5783	-2.4392	0.5220	-0.1391	-243.9188	-257.8267	2.2618	2.2410	0.8861
16.2218	0.8377	400	2.0046	-2.5849	-2.4766	0.5280	-0.1083	-247.6589	-258.4861	2.2625	2.2470	0.8903

Framework versions

Transformers 4.51.0
Pytorch 2.3.1+cu121
Datasets 2.21.0
Tokenizers 0.21.4

Downloads last month: 7

Safetensors

Model size

8B params

Tensor type

F32

qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855

Model description

Intended uses & limitations

Training and evaluation data

Training procedure

Training hyperparameters

Training results

Framework versions

Dataset used to train seanyhan/qwen3-8b-base-cpo-ultrafeedback-4xh200-batch-128-20260422-131855