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Make sure to start the proxy server: 
litellm --model gpt-5-mini --host 127.0.0.1 --port 4000

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Code

cookbook/11_models/litellm_openai/basic_stream.py
from agno.agent import Agent, RunOutput  # noqa
from agno.models.litellm import LiteLLMOpenAI

agent = Agent(model=LiteLLMOpenAI(id="gpt-5-mini"), markdown=True)

agent.print_response("Share a 2 sentence horror story", stream=True)

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Usage

1

Set up your virtual environment

uv venv --python 3.12
source .venv/bin/activate
2

Set your API key

export LITELLM_API_KEY=xxx
3

Install dependencies

uv pip install -U litellm[proxy] openai agno
4

Start the proxy server

litellm --model gpt-5-mini --host 127.0.0.1 --port 4000
5

Run Agent

python cookbook/11_models/litellm/basic_stream.py