LangFuse
Open source agent evals and observability platform
Langfuse is an open-source AI engineering platform for observability and evaluation. It enables teams to trace, evaluate, and improve AI agents with one integrated system.
| Best for | AI engineering teams building production-grade LLM applications |
| Website | langfuse.com |
Company facts
| Social profiles | LinkedIn, X, YouTube |
Facilities and features
- Published pricing
- Free plan
- Self-serve sign-up
- API
- Integrations
- SOC 2
- GDPR
What stands out
The AI tool captures hierarchical traces of every LLM call and supports multiple evaluation methods.
“Hierarchical traces capture every LLM call, tool invocation, and retrieval step.”LangFuse, own website
The AI tool offers over 100 integrations with major frameworks and model providers without lock-in.
“Langfuse works with any language and framework supporting OTel instrumentation.”LangFuse, own website
Strengths and trade-offs
- The AI tool captures hierarchical traces of every LLM call and supports multiple evaluation methods.
- The AI tool offers over 100 integrations with major frameworks and model providers without lock-in.
Appears in
Self-hosted LLM observability tools
1LangFuse92.02
Morph92.03
Manifest90.0RANKINGfull ranking →AIVERIFIEDBest LLM observability tools
1LangFuse92.02
AgentOps88.03
Arize AI88.0RANKINGfull ranking →How LangFuse ranks
#1 in Best LLM observability tools
How the score is made up: Evidence on its own site 20; How complete its published information is 16; Fit to this ranking's criteria 40; Buying information on its own site 16.
“Open Source Agent Evals & Observability Trace, evaluate, and improve AI agents with one open platform.”LangFuse, own website
#1 in Self-hosted LLM observability tools
How the score is made up: Evidence on its own site 20; How complete its published information is 16; Fit to this ranking's criteria 40; Buying information on its own site 16.
“Trace, evaluate, and improve AI agents with one open platform. Use production data to understand behavior, collaborate on fixes, and ship better quality at lower cost and latency.”LangFuse, own website
“Self-host at scale Docker Compose Kubernetes (Helm) AWS (Terraform) GCP (Terraform) Azure (Terraform)”LangFuse, own website
Alternatives to LangFuse
| Morph Inference built for agents with specialised coding tools. | #2 in Self-hosted LLM observability tools | 92.0 |
| Manifest The open source LLM gateway for AI agents | #3 in Self-hosted LLM observability tools | 90.0 |
 ShakudoSovereign AI for critical business operations | #4 in Self-hosted LLM observability tools | 90.0 |
 Entelligence AIOptimise AI engineering for quality and measurable outcomes | #5 in Self-hosted LLM observability tools | 88.0 |
 Fiddler AIModel monitoring and explainability platform for compliance | #6 in Self-hosted LLM observability tools | 88.0 |
 axemSovereign AI platform | #7 in Self-hosted LLM observability tools | 84.0 |
Questions about LangFuse
Who is LangFuse best for?
LangFuse is best for AI engineering teams building production-grade LLM applications.
Where does LangFuse rank?
LangFuse is ranked #1 in Self-hosted LLM observability tools (Lister Score 92.0) and #1 in Best LLM observability tools (Lister Score 92.0).
What are the best alternatives to LangFuse?
The closest alternatives on Lister are Morph (#2 in Self-hosted LLM observability tools), Manifest (#3 in Self-hosted LLM observability tools) and Shakudo (#4 in Self-hosted LLM observability tools).
Is this your company?
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