Instructions to use i-Coder/iCoder-27B-OPSD with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use i-Coder/iCoder-27B-OPSD with Transformers:

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

pipe = pipeline("text-generation", model="i-Coder/iCoder-27B-OPSD")
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"},
            {"type": "text", "text": "What animal is on the candy?"}
        ]
    },
]
pipe(text=messages)

# Load model directly
from transformers import AutoProcessor, AutoModelForMultimodalLM

processor = AutoProcessor.from_pretrained("i-Coder/iCoder-27B-OPSD")
model = AutoModelForMultimodalLM.from_pretrained("i-Coder/iCoder-27B-OPSD", device_map="auto")
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"},
            {"type": "text", "text": "What animal is on the candy?"}
        ]
    },
]
inputs = processor.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(processor.decode(outputs[0][inputs["input_ids"].shape[-1]:]))

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use i-Coder/iCoder-27B-OPSD with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "i-Coder/iCoder-27B-OPSD"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "i-Coder/iCoder-27B-OPSD",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/i-Coder/iCoder-27B-OPSD

SGLang

How to use i-Coder/iCoder-27B-OPSD 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 "i-Coder/iCoder-27B-OPSD" \
    --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": "i-Coder/iCoder-27B-OPSD",
		"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 "i-Coder/iCoder-27B-OPSD" \
        --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": "i-Coder/iCoder-27B-OPSD",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Docker Model Runner
How to use i-Coder/iCoder-27B-OPSD with Docker Model Runner:
```
docker model run hf.co/i-Coder/iCoder-27B-OPSD
```

iCoder-27B-OPSD / README.md

greeky

iCoder-27B-OPSD

44ba7e8 3 days ago

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	---
	license: apache-2.0
	base_model:
	- i-Coder/iCoder-27B-SFT
	base_model_relation: finetune
	pipeline_tag: text-generation
	library_name: transformers
	tags:
	- code
	- rtl
	- verilog
	- gpu-kernel
	- triton
	---

	# iCoder-27B-OPSD

	> An intermediate checkpoint from the iCoder-27B training pipeline.
	> The released model is [i-Coder/iCoder-27B](https://huggingface.co/i-Coder/iCoder-27B).

	```
	Qwen3.6-27B ──▶ SFT ──▶ [ OPSD ] ──▶ RLVR ──▶ iCoder-27B
	▲
	this checkpoint
	```

	## Model description

	iCoder-27B is a 27B model for RTL design and GPU kernel optimization, developed
	by an agent that runs and revises each stage of its own training pipeline.

	This checkpoint is the output of the second stage, OPSD, or on-policy
	self-distillation. It starts from
	[iCoder-27B-SFT](https://huggingface.co/i-Coder/iCoder-27B-SFT). The third stage,
	RLVR, starts here and produces the released model.

	The method and the reported results are described in the technical report.

	## Intended use

	Research on the training pipeline: reproducing this stage, ablating it, or
	measuring what RLVR adds on top of it. This is a mid-pipeline artifact and has
	had no deployment preparation.

	## Usage

	```python
	from transformers import AutoModelForCausalLM, AutoTokenizer

	model_id = "i-Coder/iCoder-27B-OPSD"
	tokenizer = AutoTokenizer.from_pretrained(model_id)
	model = AutoModelForCausalLM.from_pretrained(
	model_id, dtype="auto", device_map="auto"
	)

	messages = [{"role": "user", "content": "Write a 4-bit synchronous up counter with active-low reset in Verilog."}]
	text = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
	inputs = tokenizer([text], return_tensors="pt").to(model.device)
	out = model.generate(**inputs, max_new_tokens=2048)
	print(tokenizer.decode(out[0][inputs.input_ids.shape[-1]:], skip_special_tokens=True))
	```

	## License

	Apache-2.0, inherited from Qwen3.6-27B, the base model of the pipeline.