This sample demonstrates vision (image understanding) capabilities using the Foundry Local web service and the OpenAI Responses API.

It demonstrates:

• Streaming a vision response via the Responses API
• Uses a default test image (src/test_image.jpg) if no image path is provided

Install the sample dependencies from requirements.txt:

pip install -r requirements.txt

That installs:

• foundry-local-sdk
• openai
• Pillow (for image resizing)

The sample downloads the specified model the first time it runs (skips if already cached).

From this directory:

python -m venv .venv
.\.venv\Scripts\activate
pip install -r requirements.txt
python src\app.py qwen3.5-0.8b

You can also pass a custom image path as the second argument.

On macOS or Linux, activate the virtual environment with:

source .venv/bin/activate

The sample starts the local web service, sends vision requests via the Responses API to http://localhost:<port>/v1, prints the model output, and then stops the web service.