Agents IA
openllmetry
OpenTelemetry-native observability for LLM apps.
★ 7,5 k étoilesApache-2.0
Voir le guide →logfire est un projet de agents IA open source, créé par pydantic (pydantic/logfire sur GitHub). Il compte 4 510 étoiles sur GitHub et 309 forks, il est publié sous la licence MIT et a été mis à jour pour la dernière fois sur GitHub le 8 octobre 2026.
Pydantic Logfire: Python and AI observability on OpenTelemetry — SQL-queryable traces, metrics, and logs
Use the Logfire cloud platform (free tier available) or export OpenTelemetry data to another backend.
Install the SDK from PyPI and run the auth command if you will send data to Logfire.
Call logfire.configure() in your application entry point.
Add auto-instrumentation (for example for FastAPI) and view your first trace as a structured, queryable timeline.
Built on OTel, so data can also flow to any OTel-compatible backend — no proprietary agent.
Query traces, metrics, and logs with plain SQL instead of a bespoke query language.
Data is shown as rich Python objects rather than flattened JSON strings.
Instrument frameworks such as FastAPI with calls like logfire.instrument_fastapi(app).
Purpose-built views and evals for LLM calls and agent behavior.
See how your Pydantic models validate in production, from the team behind Pydantic itself.
Clone the project and enter its directory (most users install from PyPI instead).
git clone https://github.com/pydantic/logfire.git
cd logfireInstall the SDK and authenticate with the Logfire platform.
pip install logfire
logfire authAdd configuration and auto-instrumentation to your app, then run it and open the Logfire UI.
import logfire
logfire.configure()
logfire.instrument_fastapi(app)Pydantic — the team behind the Pydantic data-validation library and Pydantic AI.
The Python SDK in this repo is MIT-licensed and free. The hosted platform has free and paid tiers per the README, its backend is closed source, and self-hosting the platform requires an enterprise license.
No paid key is required to start: the SDK is free, the cloud has a free tier, and you can export to any OpenTelemetry backend instead.
Logfire is OpenTelemetry-native and SQL-queryable, spans general Python observability (not only LLMs), and renders data as Python objects; LangSmith focuses on LLM tracing within its own platform.
Run `pip install logfire`, `logfire auth`, add `logfire.configure()` to your app, and instrument your framework.
OpenTelemetry-native observability for LLM apps.
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