Instructions to use FlameF0X/LFM2.5-1.2B-Thinking-CodeX with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use FlameF0X/LFM2.5-1.2B-Thinking-CodeX with Transformers:

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

pipe = pipeline("text-generation", model="FlameF0X/LFM2.5-1.2B-Thinking-CodeX")
messages = [
    {"role": "user", "content": "Who are you?"},
]
pipe(messages)

# Load model directly
from transformers import AutoTokenizer, AutoModelForCausalLM

tokenizer = AutoTokenizer.from_pretrained("FlameF0X/LFM2.5-1.2B-Thinking-CodeX")
model = AutoModelForCausalLM.from_pretrained("FlameF0X/LFM2.5-1.2B-Thinking-CodeX")
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

vLLM

How to use FlameF0X/LFM2.5-1.2B-Thinking-CodeX with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "FlameF0X/LFM2.5-1.2B-Thinking-CodeX"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "FlameF0X/LFM2.5-1.2B-Thinking-CodeX",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/FlameF0X/LFM2.5-1.2B-Thinking-CodeX

SGLang

How to use FlameF0X/LFM2.5-1.2B-Thinking-CodeX 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 "FlameF0X/LFM2.5-1.2B-Thinking-CodeX" \
    --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": "FlameF0X/LFM2.5-1.2B-Thinking-CodeX",
		"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 "FlameF0X/LFM2.5-1.2B-Thinking-CodeX" \
        --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": "FlameF0X/LFM2.5-1.2B-Thinking-CodeX",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Docker Model Runner
How to use FlameF0X/LFM2.5-1.2B-Thinking-CodeX with Docker Model Runner:
```
docker model run hf.co/FlameF0X/LFM2.5-1.2B-Thinking-CodeX
```

LFM2.5-1.2B-Thinking-CodeX / README.md

FlameF0X

Update README.md

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	---
	base_model: LiquidAI/LFM2.5-1.2B-Thinking
	library_name: transformers
	model_name: LFM2.5-1.2B-Thinking-CodeX
	tags:
	- generated_from_trainer
	- sft
	- trl
	licence: license
	datasets:
	- Modotte/CodeX-2M-Thinking
	license: apache-2.0
	---

	<div align="center">
	<img src="https://cdn-uploads.huggingface.co/production/uploads/6615494716917dfdc645c44e/k5xrb5inTiff6dFC1A8UN.png" alt="Liquid CodeX" style="width: 100%; max-width: 100%; height: auto; display: inline-block; margin-bottom: 0.5em; margin-top: 0.5em; reading-order: 20px; border-radius: 20px;"/>
	</div>

	# LFM2.5-1.2B-Thinking-CodeX (Liquid CodeX)
	LFM2.5-1.2B-Thinking-CodeX (Liquid CodeX) is a distillation of Claude into LFM2.5-1.2B-Thinking via LoRA.

	# Benchmark

	\|Model \|Average\|HellaSwag\|MMLU \|Piqa \|Source\|
	\|-----------------------------------------\|-------\|---------\|-----\|-----\|------\|
	\|FlameFOX/LFM2.5-1.2B-Distilled-Claude-4.6\|46.76 \|39.51 \|31.99\|68.77\|[Intel/low bit open llm leaderboard](https://huggingface.co/spaces/Intel/low_bit_open_llm_leaderboard)\|
	\|FlameFOX/LFM2.5-1.2B-Thinking-CodeX \|45.25 \|39.70 \|26.56\|69.48\|As the one from above\|

	## Quick start

	```python
	from transformers import pipeline

	question = "If you had a time machine, but could only go to the past or the future once and never return, which would you choose and why?"
	generator = pipeline("text-generation", model="FlameF0X/LFM2.5-1.2B-Thinking-CodeX", device="cuda")
	output = generator([{"role": "user", "content": question}], max_new_tokens=128, return_full_text=False)[0]
	print(output["generated_text"])
	```

	## Training procedure





	This model was trained with SFT.

	### Framework versions

	- TRL: 1.2.0
	- Transformers: 5.0.0
	- Pytorch: 2.10.0+cu128
	- Datasets: 4.8.4
	- Tokenizers: 0.22.2

	## Citations



	Cite TRL as:

	```bibtex
	@software{vonwerra2020trl,
	title = {{TRL: Transformers Reinforcement Learning}},
	author = {von Werra, Leandro and Belkada, Younes and Tunstall, Lewis and Beeching, Edward and Thrush, Tristan and Lambert, Nathan and Huang, Shengyi and Rasul, Kashif and Gallouédec, Quentin},
	license = {Apache-2.0},
	url = {https://github.com/huggingface/trl},
	year = {2020}
	}
	```