HVTracker › Observability & Evaluation › Langfuse vs Promptfoo

Langfuse vs Promptfoo

An independent, evidence-weighted trust comparison of two observability & evaluation — ranked on verifiable signals, not popularity.

Langfuse ranks higher with an HVTrust score of 74.7 vs 73.8/100 . HVTrust reflects supply-chain safety, transparency, maintenance, and adoption — weighted by how much verifiable evidence exists.
SignalLangfusePromptfoo
HVTrust score74.773.8
Evidence gradeBB
Safety / Integrity (30)16.115.0
Transparency (20)16.810.0
Maintenance (20)20.020.0
Adoption (10)9.88.8
GitHub stars28.2k21.7k
Weekly downloads4,895,338251,066
Last push2026-05-302026-05-30
LanguageTypeScriptTypeScript
OSSF Scorecard6.8—
Full Langfuse report → Full Promptfoo report → All Observability & Evaluation →