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langfuse/langfuse

langfuse

🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

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Builder

Langfuse

Langfuse

langfuse • startup

Stars

28,206

Using upstream star count

Forks

2,902

Using upstream fork count

Open Issues

0

Activity Score

0/100

0 commits in 30d

Created

May 18, 2023

Project creation date

README Summary

<img width="4856" height="1000" alt="github-banner" src="https://github.com/user-attachments/assets/6f435ef3-1194-4e26-87af-aa13826bbb5f" />

Community Evaluation

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AI Dev Skills

Unmapped

AI Application DebuggingAI Model MonitoringAI System AnalyticsLarge Language Model EngineeringLLM ObservabilityLLM Performance OptimizationMachine Learning OperationsPrompt Engineering

Tags

AI Application DebuggingAI Model MonitoringAI System AnalyticsLarge Language Model EngineeringLLM ObservabilityLLM Performance OptimizationMachine Learning OperationsPrompt EngineeringAI AgentsAPIAWS BedrockAiderAnthropic / ClaudeAutoGenCachingCourseCrewAIDSPyDatabaseDockerEmbeddingsEvalsFinTechFlowiseForkedFrontendGoogle CloudHaystackHuggingFaceKubernetesLLM ServingLangChainLangGraphLangflowLangfuseLarge Language ModelsLiteLLMLlamaIndexMCPMulti-AgentNode.jsOllamaOpen SourceOpen WebUIOpenAIPromptFooPydanticPythonPython Web FrameworkReact / Next.jsRoadmapSageMakerSecurityStatisticsStructured OutputTool UseTypeScriptZenMLvLLM

Taxonomy

AI Trends

LLM OperationsAI ObservabilityPrompt EngineeringLarge Language Models

category

AI AgentsFoundation ModelsRAG & RetrievalEvals & BenchmarkingInference & ServingMLOps & InfrastructureDev Tools & AutomationCloud & PlatformsLearning ResourcesIndustry: FinTechSecurity & SafetyData Science & Analytics

Deployment Context

Self-hostedCloud API

Industries

Developer Tools

Modalities

Text

Skill Areas

LLM ObservabilityLarge Language Model EngineeringAI Model MonitoringPrompt EngineeringLLM Performance OptimizationAI System AnalyticsMachine Learning OperationsAI Application Debugging

tag

AI AgentsAPIAWS BedrockAiderAnthropic / ClaudeAutoGenCachingCourseCrewAIDSPyDatabaseDockerEmbeddingsEvalsFinTechFlowiseForkedFrontendGoogle CloudHaystackHuggingFaceKubernetesLLM ServingLangChainLangGraphLangflowLangfuseLarge Language ModelsLiteLLMLlamaIndexMCPMulti-AgentNode.jsOllamaOpen SourceOpen WebUIOpenAIPromptFooPydanticPythonPython Web FrameworkReact / Next.jsRoadmapSageMakerSecurityStatisticsStructured OutputTool UseTypeScriptZenMLvLLM

Use Cases

LLM Application MonitoringAI Model Performance TrackingPrompt Management and OptimizationLLM Cost AnalyticsAI System DebuggingML Model EvaluationProduction AI Observability

Recent Activity

Updated 2 months ago

7 Days

0

30 Days

0

90 Days

20

fix(evals): never apply default view if table controls are hidden (#12625)

marliessophie • Mar 16, 2026

06f4150

fix(traces): split IO columns into separate CTE to reduce memory usage (#12619)

Valery Meleshkin • Mar 16, 2026

aefd139

feat(otel): pydantic gen ai.system instructions mapping (#12442)

Jannik Maierhöfer • Mar 16, 2026

e7e1662

Quality

production
Quality
high
Maturity
production

Categories

RAG & RetrievalPrimaryEvals & BenchmarkingInference & ServingMLOps & InfrastructureDev Tools & AutomationCloud & PlatformsLearning ResourcesIndustry: FinTechSecurity & SafetyData Science & AnalyticsFoundation ModelsAI AgentsCoding & Dev ToolsFinance & LegalSearch & KnowledgeOther AI / ML

PM Skills

Cost & EfficiencyUser ExperienceScale & ReliabilityData & EvaluationProduct DiscoveryDeveloper PlatformAI-Native Architecture

Languages

TypeScript100.0%

Timeline

Project created
May 18, 2023
Forked
Mar 13, 2026
Your last push
2 months ago
Upstream last push
16 days ago
Tracked since
Mar 17, 2026

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