logfire

The best Python observability tool! 🪵🔥

logfire Permissive license MIT Active ★ 4,423 v4.40.0 released 2026-08-05

Install

logfire on PyPI

pip

pip install logfire

uv

uv add logfire

poetry

poetry add logfire

Package facts

License	MIT (permissive)
Python support	supports the current Python release (>=3.10)
Install friction	low — pure-Python wheel
Runtime dependencies	8 — executing, opentelemetry-exporter-otlp-proto-http, opentelemetry-instrumentation, opentelemetry-sdk, protobuf, rich, tomli, typing-extensions
Maintenance	actively maintained — 8 days since the last release
Last repo commit	2026-08-13
First released	2020-04-20
Popularity	one of the top 1,000 most-downloaded packages on PyPI (30-day window, as of 2026-08-13)
Known vulnerabilities	none known (OSV.dev, checked 2026-08-13)

Evidence: logfire-4.40.0-py3-none-any.whl

Development Status :: 5 - Production/StableEnvironment :: ConsoleEnvironment :: MacOS XFramework :: OpenTelemetryFramework :: OpenTelemetry :: DistrosFramework :: OpenTelemetry :: ExportersFramework :: OpenTelemetry :: InstrumentationsIntended Audience :: DevelopersIntended Audience :: Information TechnologyIntended Audience :: System AdministratorsOperating System :: POSIX :: LinuxOperating System :: UnixProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Topic :: InternetTopic :: Software Development :: Libraries :: Python Modules

About logfire

from the package's own PyPI description — quoted content, verbatim

Pydantic Logfire: Know more. Build faster.

From the team behind Pydantic Validation, Pydantic Logfire is an observability platform built on the same belief as our open-source library: that the most powerful tools can be easy to...

Read as markdown · JSON record · Source repository · Homepage · Docs

AI interpretation — verify before relying

AI-generated interpretation of the package facts above; every digit, version, license, or vulnerability id it cites is grounded in the facts already shown on this page

Logfire is an observability platform that provides Python-centric tracing, logging, and metrics collection with an OpenTelemetry foundation, enabling manual instrumentation or automatic integration with popular frameworks.

Low friction: pure Python wheel with 8 runtime dependencies including opentelemetry-sdk and protobuf. Actively maintained with a release 8 days ago. Requires Python 3.10+.

MIT license permits unrestricted use, modification, and distribution in both open and closed source projects, with no copyleft obligations.

Usage

pip install logfire

import logfire
logfire.configure()
logfire.info('Hello, {name}!', name='world')

with logfire.span('operation'):
    # your code here
    pass

Requires Python 3.10 or later. Authentication via 'logfire auth' command needed to send data to the Logfire platform.

Verdict: Logfire is a production-ready, actively maintained observability tool with zero known vulnerabilities. Its MIT license and low install friction make it accessible; the 8 OpenTelemetry-based dependencies are standard for this class of tool. Best suited for teams wanting Python-native observability with optional managed backend or OTel-compatible alternatives.

Needs verification

Whether the managed Logfire platform has usage-based pricing or free tier limits affecting adoption cost
Performance overhead of automatic instrumentation on high-throughput applications
Data retention and compliance certifications for the closed-source backend platform

python observability platformopentelemetry wrapperdistributed tracing loggingapplication monitoringstructured logging telemetrypython instrumentationobservability dashboard