Instructions to use mlx-community/DiffuCoder-7B-cpGRPO-8bit with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use mlx-community/DiffuCoder-7B-cpGRPO-8bit with MLX:

# Make sure mlx-lm is installed
# pip install --upgrade mlx-lm

# Generate text with mlx-lm
from mlx_lm import load, generate

model, tokenizer = load("mlx-community/DiffuCoder-7B-cpGRPO-8bit")

prompt = "Write a story about Einstein"
messages = [{"role": "user", "content": prompt}]
prompt = tokenizer.apply_chat_template(
    messages, add_generation_prompt=True
)

text = generate(model, tokenizer, prompt=prompt, verbose=True)

Notebooks
Google Colab
Kaggle
Local Apps Settings
LM Studio

How to use mlx-community/DiffuCoder-7B-cpGRPO-8bit with Pi:

Start the MLX server

# Install MLX LM:
uv tool install mlx-lm
# Start a local OpenAI-compatible server:
mlx_lm.server --model "mlx-community/DiffuCoder-7B-cpGRPO-8bit"

Configure the model in Pi

# Install Pi:
npm install -g @mariozechner/pi-coding-agent
# Add to ~/.pi/agent/models.json:
{
  "providers": {
    "mlx-lm": {
      "baseUrl": "http://localhost:8080/v1",
      "api": "openai-completions",
      "apiKey": "none",
      "models": [
        {
          "id": "mlx-community/DiffuCoder-7B-cpGRPO-8bit"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Hermes Agent new

How to use mlx-community/DiffuCoder-7B-cpGRPO-8bit with Hermes Agent:

Start the MLX server

# Install MLX LM:
uv tool install mlx-lm
# Start a local OpenAI-compatible server:
mlx_lm.server --model "mlx-community/DiffuCoder-7B-cpGRPO-8bit"

Configure Hermes

# Install Hermes:
curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash
hermes setup
# Point Hermes at the local server:
hermes config set model.provider custom
hermes config set model.base_url http://127.0.0.1:8080/v1
hermes config set model.default mlx-community/DiffuCoder-7B-cpGRPO-8bit

Run Hermes

hermes

MLX LM

How to use mlx-community/DiffuCoder-7B-cpGRPO-8bit with MLX LM:

Generate or start a chat session

# Install MLX LM
uv tool install mlx-lm
# Interactive chat REPL
mlx_lm.chat --model "mlx-community/DiffuCoder-7B-cpGRPO-8bit"

Run an OpenAI-compatible server

# Install MLX LM
uv tool install mlx-lm
# Start the server
mlx_lm.server --model "mlx-community/DiffuCoder-7B-cpGRPO-8bit"
# Calling the OpenAI-compatible server with curl
curl -X POST "http://localhost:8000/v1/chat/completions" \
   -H "Content-Type: application/json" \
   --data '{
     "model": "mlx-community/DiffuCoder-7B-cpGRPO-8bit",
     "messages": [
       {"role": "user", "content": "Hello"}
     ]
   }'

issues when running the provided script for inference

by atinsood - opened Aug 20, 2025

Discussion

atinsood

Aug 20, 2025

ERROR:root:Model type Dream not supported.
Traceback (most recent call last):
  File "/home/opensource/ml-diffucoder/.venv/lib/python3.11/site-packages/mlx_lm/utils.py", line 67, in _get_classes
    arch = importlib.import_module(f"mlx_lm.models.{model_type}")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/boomer/Library/Application Support/uv/python/cpython-3.11.13-macos-aarch64-none/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1140, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'mlx_lm.models.Dream'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/opensource/ml-diffucoder/inference_demo_mac.py", line 3, in <module>
    model, tokenizer = load("mlx-community/DiffuCoder-7B-cpGRPO-8bit")
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/opensource/ml-diffucoder/.venv/lib/python3.11/site-packages/mlx_lm/utils.py", line 241, in load
    model, config = load_model(model_path, lazy)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/opensource/ml-diffucoder/.venv/lib/python3.11/site-packages/mlx_lm/utils.py", line 176, in load_model
    model_class, model_args_class = get_model_classes(config=config)
                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/opensource/ml-diffucoder/.venv/lib/python3.11/site-packages/mlx_lm/utils.py", line 71, in _get_classes
    raise ValueError(msg)
ValueError: Model type Dream not supported.

version of mlx-lm being used
mlx-lm==0.26.3

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