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LLM observability

Trace, evaluate and monitor LLM applications.

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LLM observability
OutilÉtoilesLicenceConditionsAuto-hébergeableLangageDernière releaseDernier push
Langfuse35kOtherOpen coreOuiTypeScriptv4.53.02026-10-06
Opik22kApache-2.0Open sourceOuiPython2.2.922026-10-06
Arize Phoenix12kOtherSource disponibleOuiPythonarize-phoenix-v20.19.02026-10-06
Evidently8kApache-2.0Open sourceOuiJupyter Notebookv0.7.232026-09-29
Helicone6.2kApache-2.0Open sourceOuiTypeScriptv2025.08.21-12026-09-16
LangWatch4.9kApache-2.0Open sourceOuiTypeScriptlangwatch-3.20.12026-10-06
Agenta4.8kOtherOpen coreOuiTypeScriptv0.122.12026-10-06
Laminar3.3kApache-2.0Open sourceOuiTypeScriptv0.2.52026-10-06
OpenLIT2.8kApache-2.0Open sourceOuiTypeScriptopenlit-2.1.02026-10-05

9 outils

Langfuse

🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

Langage
TypeScript
Licence
Other
Étoiles
35k
Dernière release
v4.53.0
Dernier push
2026-10-06
Opik

Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.

Langage
Python
Licence
Apache-2.0
Étoiles
22k
Dernière release
2.2.92
Dernier push
2026-10-06
Evidently

Evidently is ​​an open-source ML and LLM observability framework. Evaluate, test, and monitor any AI-powered system or data pipeline. From tabular data to Gen AI. 100+ metrics.

Langage
Jupyter Notebook
Licence
Apache-2.0
Étoiles
8k
Dernière release
v0.7.23
Dernier push
2026-09-29
Helicone

🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓

Langage
TypeScript
Licence
Apache-2.0
Étoiles
6.2k
Dernière release
v2025.08.21-1
Dernier push
2026-09-16
LangWatch

Open-Source Agent Observability & Evals for AI Platform teams. Trace, test, route and govern every agent & coding assistant in the company.

Langage
TypeScript
Licence
Apache-2.0
Étoiles
4.9k
Dernière release
langwatch-3.20.1
Dernier push
2026-10-06
Agenta

Agenta is a workspace where you and your team build agents and automations.

Langage
TypeScript
Licence
Other
Étoiles
4.8k
Dernière release
v0.122.1
Dernier push
2026-10-06
Laminar

Laminar - open-source observability platform purpose-built for AI agents. YC S24.

Langage
TypeScript
Licence
Apache-2.0
Étoiles
3.3k
Dernière release
v0.2.5
Dernier push
2026-10-06
OpenLIT

OpenLIT is the open-source agent harness engineering platform: trace, evaluate, guard, and improve everything around the model in your AI agents, on OTEL.

Langage
TypeScript
Licence
Apache-2.0
Étoiles
2.8k
Dernière release
openlit-2.1.0
Dernier push
2026-10-05

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