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LLM Observability
Methodology

Braintrust vs PromptLayer

BraintrustBRBraintrustvsPRPromptLayer
BraintrustPromptLayer
33%
67%

Leading: PromptLayer (66.7%)

Insufficient data
This matchup has 27 decisive cases (minimum 30 required for publication).

Statistics

MetricValue
Braintrust wins9
PromptLayer wins18
Abstains (no tool)45
Other tool chosen2401
Decisive cases27
Braintrust win rate (unweighted)33.3%
95% CI18.6% - 52.2%
Braintrust win rate (weighted)33.3%

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Braintrust

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PromptLayer

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Per-model breakdown

ModelTierBraintrustPromptLayerNoneOtherA rate
Llama 4 ScoutSmall01811960%
Claude Haiku 4.5Small900120100%
Claude Opus 4.6Frontier000132n/a
Claude Sonnet 4.6Frontier000132n/a
DeepSeek R1 0528Frontier001131n/a
DeepSeek V3.2Mid000132n/a
Devstral 2 2512Mid0015111n/a
Gemini 2.5 FlashSmall001131n/a
Gemini 2.5 ProFrontier006126n/a
GLM 5 TurboFrontier000132n/a
GPT 5.3 CodexFrontier000132n/a
GPT 5.4Frontier000132n/a
GPT 5.4 MiniMid001131n/a
Kimi K2.5Frontier004115n/a
Llama 4 MaverickFrontier000132n/a
MiMo V2 ProFrontier002130n/a
MiniMax M2.7Frontier003127n/a
Mistral Small 4Mid000129n/a
Qwen3 Coder NextMid001130n/a

Per-prompt breakdown

PromptTierBraintrustPromptLayerNoneOtherA rate
ai-revenue-ops-copilotAdvanced01423930%
ai-revenue-ops-copilotBeginner9029379100%
ai-support-agent-platformAdvanced0314110%
ai-revenue-ops-copilotIntermediate0114010%
ai-support-agent-platformBeginner0011402n/a
ai-support-agent-platformIntermediate001415n/a