Instructions to use skt/A.X-K2 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use skt/A.X-K2 with Transformers:

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

pipe = pipeline("text-generation", model="skt/A.X-K2")
messages = [
    {"role": "user", "content": "Who are you?"},
]
pipe(messages)

# pip install -U transformers accelerate
# Load model directly
from transformers import AutoTokenizer, AutoModelForCausalLM

tokenizer = AutoTokenizer.from_pretrained("skt/A.X-K2")
model = AutoModelForCausalLM.from_pretrained("skt/A.X-K2", 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=256)
print(tokenizer.decode(outputs[0][inputs["input_ids"].shape[-1]:]))

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use skt/A.X-K2 with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "skt/A.X-K2"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "skt/A.X-K2",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/skt/A.X-K2

SGLang

How to use skt/A.X-K2 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 "skt/A.X-K2" \
    --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": "skt/A.X-K2",
		"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 "skt/A.X-K2" \
        --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": "skt/A.X-K2",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Docker Model Runner
How to use skt/A.X-K2 with Docker Model Runner:
```
docker model run hf.co/skt/A.X-K2
```

A.X-K2

Commit History

Oct 20 10 days ago

08:30
Document recommended sampling parameters⁠

Kim, Jin

d0805cf

Sep 1

06:57
Track logo assets with Git LFS⁠

Kim, Jin

4237c6a
06:47
update citation⁠

Kim, Jin

bf3cc22

Aug 24

01:58
Update benchmarks

Kim, Jin

9af2e3d
01:49
Restore assets/A.X_K2_BI_{Primary,Negative}.png removed in d51aa22

Kim, Jin

644dcc3
01:42
update benchmarks

Kim, Jin

d51aa22

Aug 8

12:43
Update IFBench / AA-LCR scores

singleheart

Verified signature
7b3969c

Jul 29

21:35
Add HLE, GPQA, and AIME 2026 evaluation results (#3)⁠

singleheart +1: nielsr

68367f2

Jul 28

23:40
Fix dark-mode logo: absolute srcset URL (HF does not rewrite srcset)

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fb412dc
23:38
Point Models link at the A.X K2 collection

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98f6691
23:17
Add files using upload-large-folder tool

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23:16
Add files using upload-large-folder tool

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1e90ba2
23:14
Add files using upload-large-folder tool

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02a83f5
23:13
Add files using upload-large-folder tool

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4eced65
23:13
Add files using upload-large-folder tool

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0a2e2dc
23:13
Add files using upload-large-folder tool

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5b61f56
10:33
initial commit

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b0a8c07

Commit History

Oct 20 10 days ago

Document recommended sampling parameters⁠

Sep 1

Track logo assets with Git LFS⁠

update citation⁠

Aug 24

Update benchmarks

Restore assets/A.X_K2_BI_{Primary,Negative}.png removed in d51aa22

update benchmarks

Aug 8

Update IFBench / AA-LCR scores

Jul 29

Add HLE, GPQA, and AIME 2026 evaluation results (#3)⁠

Jul 28

Fix dark-mode logo: absolute srcset URL (HF does not rewrite srcset)

Point Models link at the A.X K2 collection

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

initial commit