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Overview

LiteLLM is a framework/library for building LLM applications that simplifies accessing many models across different providers.

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Default configuration

1

Ensure you have the latest version of Laminar

pip install -U 'lmnr[all]'
2

Initialize Laminar

Laminar auto-instruments LiteLLM. No callback is required.
import os
import litellm
from lmnr import Laminar

Laminar.initialize(project_api_key=os.environ["LMNR_PROJECT_API_KEY"])
LaminarLiteLLMCallback is deprecated and does nothing. Remove it if you already use it.
3

Run your code and see traces in Laminar

Example code:
import os
import litellm
from lmnr import Laminar

Laminar.initialize(project_api_key=os.environ["LMNR_PROJECT_API_KEY"])

response = litellm.completion(
    model="gpt-5-nano",
    messages=[
      {"role": "user", "content": "What is the capital of France?"}
    ],
)
LiteLLM trace