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LLM Evals
Methodology

Langfuse vs Promptfoo

LangfuseLALangfusevsPromptfooPRPromptfoo
LangfusePromptfoo
46%
54%

Leading: Promptfoo (54.4%)

Statistics

MetricValue
Langfuse wins82
Promptfoo wins98
Abstains (no tool)194
Other tool chosen3563
Decisive cases180
Langfuse win rate (unweighted)45.6%
95% CI38.4% - 52.8%
Langfuse win rate (weighted)45.6%

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Langfuse

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Promptfoo

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Per-model breakdown

ModelTierLangfusePromptfooNoneOtherA rate
Qwen3 Coder NextMid2304176100%
GPT 5.4 MiniMid99818150%
Claude Sonnet 4.6Frontier1607187100%
GLM 5.2Frontier0160680%
Claude Opus 4.8Frontier13176293%
Gemini 3.5 FlashSmall0138630%
Kimi K2.7 CodeFrontier0131690%
MiMo V2.5 ProFrontier2996318%
Mistral Small 4Mid11031829%
DeepSeek V4 FlashMid4547044%
MiMo V2 ProFrontier0681120%
Claude Haiku 4.5Small504191100%
GLM 5 TurboFrontier05191020%
Gemini 2.5 ProFrontier409195100%
Llama 4 ScoutSmall4023162100%
DeepSeek V4 ProFrontier042780%
MiniMax M3Frontier036750%
Kimi K2.5Frontier0231090%
DeepSeek V3.2Mid1022100100%
GPT 5.3 CodexFrontier0102090%
GPT 5.5Frontier013800%
Claude Opus 4.6Frontier000126n/a
DeepSeek R1 0528Frontier0010200n/a
Devstral 2 2512Mid0014158n/a
Gemini 2.5 FlashSmall001120n/a
GPT 5.4Frontier000126n/a
Llama 4 MaverickFrontier0014181n/a
MiniMax M2.7Frontier005118n/a

Per-prompt breakdown

PromptTierLangfusePromptfooNoneOtherA rate
ai-support-agent-platformBeginner2957541985%
ai-engineering-workflowBeginner520614820%
ai-engineering-workflowIntermediate914110739%
ai-revenue-ops-copilotIntermediate911449945%
ai-engineering-workflowAdvanced317110915%
ai-support-agent-platformIntermediate107550059%
ai-support-agent-platformAdvanced76550954%
ai-revenue-ops-copilotBeginner551150450%
ai-revenue-ops-copilotAdvanced0725070%
ai-agent-applicationBeginner422810467%
ai-agent-applicationIntermediate13112725%
ai-agent-applicationAdvanced0101300%