Google Gen AI

Logfire supports instrumenting calls to the Google Gen AI SDK (google-genai) with the logfire.instrument_google_genai() method.

Installation

Install logfire with the google-genai extra:

pip

Terminal

pip install 'logfire[google-genai]'

uv

Terminal

uv add 'logfire[google-genai]'

Usage

import os

from google.genai import Client

import logfire

# This is required for prompts and completions to be captured in the spans
os.environ['OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT'] = 'true'

logfire.configure()
logfire.instrument_google_genai()

client = Client()
response = client.models.generate_content(model='gemini-2.5-flash', contents=['Hi'])
print(response.text)
# Hello! How can I help you today?

This creates a span which shows the conversation in the Logfire UI:

Note

If you don’t set the environment variable OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT to true, the spans will simply contain <elided> where the prompts and completions would be.

logfire.instrument_google_genai() uses the GoogleGenAiSdkInstrumentor().instrument() method of the opentelemetry-instrumentation-google-genai package.