Fiddler AI vs Langfuse

Fiddler AI

5.5 #25 in AI Agent Observability Tools

About Fiddler AI

Langfuse

7.4 #2 in AI Agent Observability Tools

About Langfuse
Fiddler AILangfuse
Free planNoYes
Free trialNoNo
Paid from—$29/mo
Open sourceNoNo
PlatformsWebapi, self-hosted, Web
Free planYesYes
Cost trackingYesYes
Paid from—29 /mo

Both are listed in Best AI Agent Observability Tools, Best LLM Observability Tools, Best Model Monitoring Software, Best AI LLM Observability Tools. On Inferse, Langfuse scores higher on our published basis.