Instructions to use summerAIO/diffusion-lfm2.5-24b-a2b with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use summerAIO/diffusion-lfm2.5-24b-a2b with Transformers:

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

pipe = pipeline("text-generation", model="summerAIO/diffusion-lfm2.5-24b-a2b", trust_remote_code=True)
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("summerAIO/diffusion-lfm2.5-24b-a2b", trust_remote_code=True)
model = AutoModelForCausalLM.from_pretrained("summerAIO/diffusion-lfm2.5-24b-a2b", trust_remote_code=True, 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 summerAIO/diffusion-lfm2.5-24b-a2b with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "summerAIO/diffusion-lfm2.5-24b-a2b"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "summerAIO/diffusion-lfm2.5-24b-a2b",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/summerAIO/diffusion-lfm2.5-24b-a2b

SGLang

How to use summerAIO/diffusion-lfm2.5-24b-a2b 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 "summerAIO/diffusion-lfm2.5-24b-a2b" \
    --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": "summerAIO/diffusion-lfm2.5-24b-a2b",
		"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 "summerAIO/diffusion-lfm2.5-24b-a2b" \
        --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": "summerAIO/diffusion-lfm2.5-24b-a2b",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Docker Model Runner
How to use summerAIO/diffusion-lfm2.5-24b-a2b with Docker Model Runner:
```
docker model run hf.co/summerAIO/diffusion-lfm2.5-24b-a2b
```

Diffusion LFM2.5 24B-A2B — e-means LoRA merged

This revision contains an experimental merge of the e-means code-generation LoRA into the base model.

Merged BF16 model weights
Tokenizer and configuration
Learned diffusion mask embedding: diffusion.safetensors
Custom diffusion implementation: modeling_diffusion_lfm.py
Merge validation: merge_validation.json

Important validation warning

This checkpoint is experimental.

The merge completed and no LoRA parameters remained. The 10 bidirectional attention modules retained is_causal=False.

However:

Maximum pre/post merge logits difference: 1.662109
Mean pre/post merge logits difference: 0.182571
Top-1 agreement on the tested probe: 100%
Strict numerical equivalence: NOT PASSED
Local merged checkpoint reload: NOT VERIFIED
Code-generation quality: NOT VERIFIED

The original custom diffusion loader may require adaptation to load the merged safetensors format.

The original revision is preserved in a backup branch. Consult the repository branch history before using this checkpoint in production.

Downloads last month: 1,630

Safetensors

Model size

24B params

Tensor type

F32

BF16

summerAIO
/

diffusion-lfm2.5-24b-a2b

Diffusion LFM2.5 24B-A2B — e-means LoRA merged

Contents

Important validation warning