Ollama Demo Gemma

Stream a short story about a local image from Gemma 3 12B running on Ollama.

demo_gemma.py
"""
Ollama Demo Gemma
=================

Cookbook example for `ollama/chat/demo_gemma.py`.
"""

from pathlib import Path

from agno.agent import Agent
from agno.media import Image
from agno.models.ollama import Ollama

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------

agent = Agent(model=Ollama(id="gemma3:12b"), markdown=True)

image_path = Path(__file__).parent.joinpath("super-agents.png")
agent.print_response(
    "Write a 3 sentence fiction story about the image",
    images=[Image(filepath=image_path)],
    stream=True,
)

# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------

if __name__ == "__main__":
    pass

Run the Example

Set up your virtual environment

uv venv --python 3.12
source .venv/bin/activate

Install dependencies

uv pip install -U agno ollama

Select the local Ollama server

In the shell used for the pull commands and Python example, clear a previous cloud key and point native clients and embeddings at your local server:

unset OLLAMA_API_KEY
export OLLAMA_HOST="http://localhost:11434"

Without this reset, OLLAMA_API_KEY makes Agno's default Ollama model route to https://ollama.com even when OLLAMA_HOST points locally. Keep a local Ollama server running for the following steps.

Prepare Ollama

Install and start Ollama, then pull the model used by this example:

ollama pull gemma3:12b

Add the sample image

Place an image named super-agents.png in the same directory as the script, or update image_path to point to your own image.

Run the example

Save the code above as demo_gemma.py, then run:

python demo_gemma.py

Full source: cookbook/90_models/ollama/chat/demo_gemma.py