{ "evaluation_id": "EVAL-20260402-192322", "question_id": "ANALYSIS-010", "question_text": "A production incident report:\n\n\"At 3:47 PM, users reported checkout failures. Investigation showed database connection pool exhausted. Team increased pool size from 20 to 100 at 4:15 PM. Service recovered at 4:20 PM. Root cause: too few database connections.\"\n\nCritique this root cause analysis. What questions would you ask to find the actual root cause? Describe a proper RCA methodology for this incident.", "category": "analysis", "timestamp": "2026-03-19T00:00:00.000Z", "display_date": "Mar 19, 2026", "winner": { "name": "Grok 4.20", "provider": "openrouter", "score": 9.62 }, "avg_score": 9.278, "matrix_size": 88, "models_used": [ { "id": "mimo_v2_flash", "name": "MiMo-V2-Flash", "provider": "Xiaomi" }, { "id": "gemini_3_flash", "name": "Gemini 3 Flash Preview", "provider": "Google" }, { "id": "minimax_m25", "name": "MiniMax M2.5", "provider": "openrouter" }, { "id": "deepseek_v4", "name": "DeepSeek V4", "provider": "openrouter" }, { "id": "gpt_5_4", "name": "GPT-5.4", "provider": "openrouter" }, { "id": "claude_opus_46", "name": "Claude Opus 4.6", "provider": "openrouter" }, { "id": "claude_sonnet_46", "name": "Claude Sonnet 4.6", "provider": "openrouter" }, { "id": "grok_420", "name": "Grok 4.20", "provider": "openrouter" }, { "id": "gpt_oss_120b", "name": "GPT-OSS-120B", "provider": "OpenAI" }, { "id": "gemini_31_pro", "name": "Gemini 3.1 Pro", "provider": "openrouter" } ], "rankings": { "grok_420": { "display_name": "Grok 4.20", "provider": "openrouter", "average_score": 9.62, "score_count": 8, "min_score": 8.8, "max_score": 10, "rank": 1 }, "claude_sonnet_46": { "display_name": "Claude Sonnet 4.6", "provider": "openrouter", "average_score": 9.61, "score_count": 8, "min_score": 9, "max_score": 10, "rank": 2 }, "gpt_5_4": { "display_name": "GPT-5.4", "provider": "openrouter", "average_score": 9.41, "score_count": 9, "min_score": 9, "max_score": 10, "rank": 3 }, "claude_opus_46": { "display_name": "Claude Opus 4.6", "provider": "openrouter", "average_score": 9.39, "score_count": 9, "min_score": 8.8, "max_score": 10, "rank": 4 }, "mimo_v2_flash": { "display_name": "MiMo-V2-Flash", "provider": "Xiaomi", "average_score": 9.36, "score_count": 9, "min_score": 8.6, "max_score": 10, "rank": 5 }, "minimax_m25": { "display_name": "MiniMax M2.5", "provider": "openrouter", "average_score": 9.19, "score_count": 9, "min_score": 8.8, "max_score": 10, "rank": 6 }, "gemini_3_flash": { "display_name": "Gemini 3 Flash Preview", "provider": "Google", "average_score": 9.19, "score_count": 9, "min_score": 8.6, "max_score": 10, "rank": 7 }, "deepseek_v4": { "display_name": "DeepSeek V4", "provider": "openrouter", "average_score": 9.04, "score_count": 9, "min_score": 8.6, "max_score": 10, "rank": 8 }, "gpt_oss_120b": { "display_name": "GPT-OSS-120B", "provider": "OpenAI", "average_score": 9.04, "score_count": 9, "min_score": 8, "max_score": 9.75, "rank": 9 }, "gemini_31_pro": { "display_name": "Gemini 3.1 Pro", "provider": "openrouter", "average_score": 8.93, "score_count": 9, "min_score": 7.85, "max_score": 9.6, "rank": 10 } }, "judgments": [ { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 8.6, "brief_justification": "Accurate critique and relevant questions; covers full RCA process with clear structure and actionable guidance, offering solid depth and practical value." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 8.6, "brief_justification": "Accurate critique and thorough, well-structured guidance with actionable questions and a clear RCA framework." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 8.8, "brief_justification": "Accurate critique, thorough set of investigative questions, detailed RCA steps, clear structure, insightful analysis, and actionable recommendations." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 10, "brief_justification": "The response perfectly addresses the prompt with a highly accurate critique, insightful technical questions, a standard RCA methodology, and a highly practical example of an improved incident report." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9, "brief_justification": "Accurate critique with thorough coverage, clear structure, deep analysis, and actionable guidance." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 10, "brief_justification": "The response is exceptionally accurate, comprehensive, and well-structured. It provides deep insights into RCA methodologies, actionable questions, and includes advanced concepts like connection pool sizing math." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.25, "brief_justification": "The response is highly accurate, insightful, and actionable, providing excellent technical depth regarding database connection exhaustion and RCA methodologies. However, it gets slightly penalized for completeness because the text truncates at the very end." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 10, "brief_justification": "The response is exceptionally well-structured, accurate, and comprehensive. It perfectly critiques the flawed RCA, provides highly relevant investigative questions, and outlines a robust, industry-standard RCA methodology." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9.8, "brief_justification": "The response provides an exceptionally accurate, deep, and practical critique and methodology. It loses a point in completeness only because the final document outline cuts off abruptly, but the core content is outstanding." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 10, "brief_justification": "The response perfectly critiques the weak RCA, provides a comprehensive and highly technical list of investigative questions, and outlines an excellent, actionable RCA methodology with a great practical example." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 8.45, "brief_justification": "The response provides an excellent critique, comprehensive questions, and a solid RCA framework. However, it cuts off abruptly at the end, missing the final steps of the RCA process such as defining action items." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 10, "brief_justification": "The response is exceptional. It accurately critiques the flawed RCA, provides a comprehensive and highly relevant set of investigative questions, and effectively demonstrates the '5 Whys' methodology with a realistic example. The addition of a professional incident report structure adds significant practical value." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 10, "brief_justification": "The response perfectly addresses all parts of the prompt with exceptional accuracy, depth, and practical value. The tailored 5 Whys example and comprehensive troubleshooting questions demonstrate deep domain expertise." }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 9.35, "brief_justification": "Excellent response that correctly identifies the stated root cause as a symptom, not a true root cause. The critique is precise and well-reasoned. The investigative questions are comprehensive, covering traffic, database performance, code/architecture, and observability gaps. The 5 Whys example is realistic and illustrative, arriving at a plausible architectural flaw. The methodology is well-structured with clear steps. The only minor issue is that the response appears slightly truncated at the " }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.8, "brief_justification": "This is an exceptionally thorough and accurate critique of the weak RCA. It correctly identifies that the report confuses symptom with cause, provides an exhaustive set of investigative questions organized by domain (application, database, infrastructure, amplifiers, detection gaps), enumerates likely root-cause candidates with clear reasoning, and describes a complete RCA methodology including timeline construction, evidence gathering, causal chain analysis, structured techniques (5 Whys, Fishb" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 9.2, "brief_justification": "Excellent response that correctly identifies the stated root cause as a symptom, asks comprehensive probing questions across multiple dimensions (traffic, connection usage, configuration, system context, monitoring), and presents a thorough RCA methodology including 5 Whys, timeline reconstruction, and validation. The improved incident summary example is a strong practical addition. Minor nitpick: could have mentioned additional formal RCA techniques like fishbone diagrams or fault tree analysis" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9.75, "brief_justification": "Exceptional response that thoroughly critiques the flawed RCA, correctly identifies the confusion between symptom and root cause, provides comprehensive and well-organized investigative questions across multiple dimensions, demonstrates the 5 Whys with a realistic example, and lays out a complete six-phase RCA methodology with concrete, actionable steps. The structure, clarity, and depth are outstanding. Minor deduction on correctness only because some specifics (like the fishbone categories) ar" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9.55, "brief_justification": "Exceptional response that correctly identifies the circular reasoning in the original RCA, provides a comprehensive and well-structured methodology, asks penetrating diagnostic questions across multiple dimensions, and illustrates the Five Whys with a realistic, evidence-backed example. The distinction between root cause, contributing factors, and detection failures is particularly valuable. The concrete corrective actions mapped to each category demonstrate deep practical expertise. The only mi" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 10, "brief_justification": "This is an exceptional response. The critique correctly identifies the fundamental flaw (symptom-as-root-cause). The questions are comprehensive, well-organized across multiple dimensions, and demonstrate deep production engineering expertise. The RCA methodology is thorough, combining multiple frameworks (5 Whys, Fault Tree, Swiss Cheese) appropriately. The example improved root cause statement perfectly illustrates the difference between shallow and proper analysis. The countermeasure framewor" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.75, "brief_justification": "Exceptionally thorough and well-structured response. Correctly identifies that 'too few connections' is a symptom, not a root cause. Provides comprehensive questioning framework across multiple dimensions (business, application, database, infrastructure, monitoring, organizational). The structured RCA methodology with Five Whys illustration, Fishbone diagram mention, and incident lifecycle phases demonstrates deep expertise. The table format and clear organization make it highly readable. The on" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9.35, "brief_justification": "Excellent response that correctly identifies the report's fundamental flaw (confusing symptom with cause), asks highly relevant diagnostic questions across multiple dimensions, demonstrates the 5 Whys methodology with a realistic example, and provides a professional incident report structure with tiered action items. The fire/water analogy is particularly effective. Minor gap: could have mentioned other RCA methodologies like fishbone diagrams or fault tree analysis, but the 5 Whys coverage is t" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 9.2, "brief_justification": "The response correctly identifies the stated root cause as superficial, provides a comprehensive and well-organized set of probing questions, and outlines a thorough RCA methodology including the 5 Whys, contributing factors, and preventive actions. The concrete example of a proper 5 Whys chain and the corrected root cause statement add significant practical value. The formatting is excellent with clear sections and logical flow. Minor nitpick: could have mentioned a few more formal RCA techniqu" }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 7.85, "brief_justification": "Accurately identifies the stated root cause as a symptom, asks strong diagnostic questions, and outlines a sound blameless RCA approach. However, the response is truncated at the end and the example root cause becomes somewhat speculative, which slightly reduces completeness and usefulness." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 9, "brief_justification": "Accurately critiques symptom-vs-root-cause confusion, asks strong investigative questions, and outlines a solid RCA process with actionable prevention steps. Minor overstatement around pool-sizing rules of thumb keeps it from a perfect score." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.6, "brief_justification": "Accurately identifies that pool exhaustion is a symptom, asks strong investigative questions, and outlines a solid RCA process with actionable next steps. Could be more explicit about organizational/process contributors and distinguishing proximate versus systemic causes." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9, "brief_justification": "Accurately identifies that the stated root cause is only a symptom, asks strong diagnostic questions, and outlines a solid RCA process with timeline, causal analysis, and preventive actions. Minor weakness: a few speculative examples could be mistaken for likely causes without emphasizing validation." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9, "brief_justification": "Accurately rejects the superficial RCA, asks strong diagnostic questions, and outlines a robust evidence-based RCA process with timelines, validation, contributing factors, and corrective actions. Minor incompleteness only because the sample RCA document section appears truncated at the end." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 9, "brief_justification": "Accurately identifies the reported cause as a symptom, asks strong diagnostic questions across key dimensions, and proposes a solid multi-factor RCA method with actionable prevention steps. Slightly loses points only because some recommendations are generic and the example root cause is hypothetical rather than tightly tied to the specific incident evidence." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 8, "brief_justification": "Accurately critiques symptom-vs-root-cause and asks strong diagnostic questions with a solid RCA framework. Slightly incomplete because the response is truncated and the methodology is not fully finished, but overall clear, practical, and insightful." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 8.8, "brief_justification": "Accurately distinguishes symptom/mitigation from root cause, asks strong diagnostic questions, and outlines a solid RCA structure. Slightly limited by focusing mainly on 5 Whys and not explicitly emphasizing evidence collection, contributing factors, and verification of hypotheses as part of a broader RCA process." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 9, "brief_justification": "Accurately identifies the stated cause as a symptom, asks strong diagnostic questions, and outlines a solid RCA process. Minor limitation: the example root cause is somewhat speculative and could emphasize validating multiple hypotheses more explicitly." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 9, "brief_justification": "Comprehensive and insightful analysis with clear methodology." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 9.2, "brief_justification": "Highly detailed and insightful analysis with actionable recommendations." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.8, "brief_justification": "Comprehensive, accurate, and actionable analysis with excellent depth and clarity." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9.35, "brief_justification": "Highly accurate, thorough, and actionable with excellent depth and clarity." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9.8, "brief_justification": "Comprehensive and insightful analysis with actionable recommendations." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 9.8, "brief_justification": "Comprehensive, insightful, and actionable analysis with excellent depth and correctness." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.2, "brief_justification": "Comprehensive and structured analysis with actionable insights." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9.6, "brief_justification": "Highly accurate, thorough, and actionable with excellent depth." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 9, "brief_justification": "Thorough, insightful, and actionable analysis with clear methodology." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 9.2, "brief_justification": "Accurate critique, thorough questions, and clear methodology; minor omission as response was cut off mid-sentence." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 10, "brief_justification": "Exceptional analysis. Correctly identifies the flawed RCA as circular reasoning, provides comprehensive questions across multiple categories, outlines a proper methodology with the 5 Whys example, and includes practical details like connection pool sizing math. The response is structured, insightful, and highly actionable." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9, "brief_justification": "Excellent, comprehensive critique. It correctly identifies the flaws in the provided RCA, asks the right investigative questions, and outlines a robust methodology with actionable steps." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 9, "brief_justification": "Excellent analysis that correctly identifies superficial RCA flaws, provides comprehensive diagnostic questions, and outlines a proper methodology with concrete examples." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9.75, "brief_justification": "Comprehensive, accurate, and highly actionable critique with a detailed, evidence-based RCA methodology." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 9.35, "brief_justification": "Excellent critique that correctly identifies the shallow analysis. Provides comprehensive questions across multiple dimensions and a detailed, actionable RCA methodology. Very practical and insightful." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.35, "brief_justification": "Comprehensive, accurate, and highly actionable critique with structured methodology and probing questions." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9.35, "brief_justification": "Excellent analysis. It correctly identifies the flaw in the original report, provides a comprehensive list of diagnostic questions, and outlines a robust methodology (5 Whys) and report structure. The response is highly actionable and insightful." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 9.35, "brief_justification": "Excellent critique that correctly identifies the superficial nature of the stated root cause. Provides comprehensive questions and a detailed, actionable RCA methodology. Clear structure and high practical value." }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 9.2, "brief_justification": "Excellent response that correctly identifies the stated root cause as a symptom rather than a true root cause. The critique is sharp and well-reasoned. The investigative questions are comprehensive and cover all critical domains (traffic, DB performance, code architecture, observability). The 5 Whys walkthrough is particularly strong, providing a concrete example that leads to a plausible architectural root cause. The response is well-structured and highly actionable. Minor deduction for the inc" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 9.55, "brief_justification": "Exceptional response that correctly identifies the circular reasoning in the original RCA, asks the right diagnostic questions across multiple categories, demonstrates proper 5 Whys methodology with a realistic example, and provides a complete four-phase RCA framework. The connection pool sizing math and the point about correlation vs. causation in the recovery add genuine depth. Formatting is clear and well-structured throughout." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.6, "brief_justification": "Accurate critique, thorough questions, clear structure, good depth with 5 Whys, and actionable RCA steps." }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.8, "brief_justification": "Exceptionally thorough response that correctly identifies all major flaws in the original RCA, provides comprehensive investigative questions across all relevant layers, presents multiple plausible root cause candidates, and outlines a rigorous RCA methodology including timeline building, evidence gathering, 5 Whys application, hypothesis validation, and structured corrective actions. The response demonstrates deep technical expertise and practical operational knowledge. Minor deduction on clari" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.8, "brief_justification": "Excellent response that correctly identifies the superficial nature of the original RCA, asks the right investigative questions across multiple dimensions (traffic, connections, config, monitoring), and provides a solid methodology including 5 Whys example. The improved incident summary is particularly valuable as a concrete illustration. Minor gap: could have mentioned formal frameworks like fishbone diagrams or fault tree analysis, and the 33-minute delay critique slightly misreads the timelin" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9.55, "brief_justification": "Exceptional response that thoroughly critiques the shallow RCA, provides targeted investigative questions across multiple dimensions, demonstrates the 5 Whys with a concrete example, and outlines a complete 6-phase RCA methodology. The distinction between symptom and root cause is well-articulated, the fishbone/Ishikawa reference adds methodological depth, and the CAPA framework with both corrective and preventive actions is highly actionable. Minor deduction on depth for not exploring more exot" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 10, "brief_justification": "Exceptional response that thoroughly critiques the shallow RCA, provides well-organized investigative questions across multiple dimensions, presents a rigorous methodology combining 5 Whys/Fault Tree/Swiss Cheese models, and delivers a concrete example of a proper root cause statement. Covers all relevant angles including observability gaps, code changes, load patterns, and countermeasures with actionable prevention strategies." }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.55, "brief_justification": "Exceptional response that thoroughly dismantles the shallow RCA, provides comprehensive investigative questions across multiple dimensions, and delivers a structured, actionable methodology. The Five Whys illustration with concrete examples, the lifecycle table, and the evidence-gathering guidance are all highly practical. Minor deduction for correctness as the response was cut off mid-sentence at the end, but the substantive content is accurate and well-reasoned throughout." }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9.2, "brief_justification": "Excellent response that correctly identifies the core flaw (confusing symptom with root cause), provides targeted investigative questions across multiple dimensions, demonstrates the 5 Whys methodology with a concrete realistic example, and outlines a professional incident report structure. The fire/water analogy is particularly effective. Minor gap: could mention blameless postmortem culture or mention tools like distributed tracing, but overall this is a thorough, well-structured, and highly a" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 8.8, "brief_justification": "Excellent critique that correctly identifies the superficial nature of the stated root cause. The 5 Whys example is concrete and illustrative. Questions are well-targeted and practical. The RCA methodology is comprehensive covering evidence gathering, timeline, contributing factors, verification, and preventive actions. Minor gap: could have mentioned fault tree analysis or Ishikawa diagrams as alternative methodologies, and could have discussed the importance of distinguishing between immediate" }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 8.8, "brief_justification": "The response accurately identifies the provided RCA as superficial, offers targeted probing questions across key domains, and outlines a solid 5 Whys + timeline methodology with a realistic example that reaches an architectural root cause. It is clear, well-structured, and highly actionable for engineering teams." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 9, "brief_justification": "The response accurately identifies the shallow nature of the given RCA, provides insightful categorized questions, demonstrates proper 5 Whys application with a realistic example, and outlines a structured methodology with clear phases and action-oriented recommendations." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9, "brief_justification": "The response accurately critiques the superficial RCA, provides insightful questions across multiple layers, and outlines a comprehensive, structured methodology with practical techniques like 5 Whys and evidence gathering. It is logically sound, thorough, clearly organized, and highly actionable for improving incident analysis." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.8, "brief_justification": "The response accurately critiques the superficial RCA, provides targeted questions across key dimensions, and outlines a structured 5-Whys methodology with clear corrective actions. It is thorough, well-organized, and highly actionable for improving incident analysis." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9, "brief_justification": "The response accurately critiques the superficial RCA, provides targeted questions across multiple dimensions, and outlines a comprehensive, structured methodology with practical phases and examples. It demonstrates strong insight into systemic issues like the 5 Whys and Fishbone analysis while remaining clear and actionable." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9, "brief_justification": "The response accurately identifies the superficial nature of the given RCA, provides insightful and evidence-based critique, asks highly relevant targeted questions across multiple dimensions, and outlines a comprehensive, structured RCA methodology with practical phases, examples, and validation steps. It demonstrates strong depth by distinguishing symptoms from true causes and emphasizes data-driven analysis throughout." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9, "brief_justification": "The response accurately critiques the superficial root cause, provides targeted questions across multiple layers, and outlines a comprehensive, industry-standard RCA methodology with clear structure, examples, and techniques like Five Whys. It is thorough, insightful, and highly actionable for improving incident analysis." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 8.8, "brief_justification": "The response accurately critiques the superficial RCA, provides targeted questions across relevant dimensions, and outlines a solid 5 Whys methodology with a realistic example. It is clearly structured, insightful on systemic issues, and highly actionable for improving incident analysis." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 8.8, "brief_justification": "The response accurately critiques the superficial RCA, provides targeted questions, and outlines a comprehensive 5 Whys-based methodology with preventive actions. It demonstrates strong insight while remaining practical and well-structured." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 8.6, "brief_justification": "Accurate critique and relevant questions; structured RCA steps with clear examples; good depth and actionable guidance." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 8.8, "brief_justification": "Accurate, thorough, well-structured analysis with actionable guidance." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 9.6, "brief_justification": "The response correctly identifies that the original RCA was a symptom, not a cause. It provides excellent investigative questions and a structured 5 Whys methodology that leads to a plausible architectural root cause. The response cut off slightly at the very end but the content provided is comprehensive." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 10, "brief_justification": "The response is an exceptional critique of a shallow RCA. It correctly identifies the circular reasoning, provides a comprehensive list of investigative questions categorized by intent, and demonstrates a proper RCA methodology using the '5 Whys' and a structured post-mortem framework. The inclusion of the technical risks of over-provisioning connection pools adds significant depth and practical value." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 10, "brief_justification": "The response is an exceptional critique of the provided incident report. It correctly identifies the confusion between symptoms and causes, provides a comprehensive list of investigative questions across multiple layers (app, DB, infrastructure), and outlines a professional RCA methodology including the 5 Whys and corrective action frameworks. It is highly actionable and technically sound." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 9.8, "brief_justification": "The response provides a comprehensive and professional critique of the incident report. It correctly identifies that the stated root cause is merely a symptom, asks the right technical questions to uncover the true cause, and outlines a standard industry methodology (5 Whys, Timeline Reconstruction) for a proper RCA." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 10, "brief_justification": "The response provides a comprehensive and expert-level critique of the incident report. It correctly identifies the difference between symptoms and root causes, provides a logical set of investigative questions, and outlines a professional RCA methodology including the 5 Whys and CAPA framework." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 10, "brief_justification": "This is an exceptional response. It correctly identifies the logical fallacy in the original report, provides a comprehensive list of investigative questions across multiple technical domains, and outlines a professional, industry-standard RCA methodology (including the 5 Whys and corrective action categorization)." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 10, "brief_justification": "The response is an exceptional critique of a shallow RCA. It correctly identifies the 'symptom-as-cause' fallacy, provides a comprehensive list of investigative questions across multiple technical dimensions, and outlines a professional methodology (5 Whys, Swiss Cheese model, etc.) for future prevention." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.6, "brief_justification": "The response is exceptionally well-structured and thorough. It correctly identifies that the provided root cause is merely a symptom, provides a comprehensive list of investigative questions across multiple domains, and outlines a professional SRE-grade RCA methodology. The inclusion of the Five Whys example specifically tailored to the scenario is highly valuable." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 9.8, "brief_justification": "The response is excellent. It correctly identifies that the original RCA was merely a description of the symptom. It provides a comprehensive list of investigative questions and a structured methodology (5 Whys, blameless culture, preventive actions) that aligns with industry best practices for SRE and DevOps." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 8.8, "brief_justification": "Excellent response that correctly identifies the stated root cause as a symptom, provides comprehensive investigative questions across multiple domains, and demonstrates proper 5 Whys methodology with a concrete example. Well-structured and highly actionable. Slight deduction for incomplete final section." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 9, "brief_justification": "Excellent response that correctly identifies the circular reasoning in the original RCA, provides comprehensive investigative questions across multiple categories, demonstrates proper 5 Whys methodology with a realistic example, and offers a thorough phased approach to RCA. Well-structured with clear formatting and actionable recommendations." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9, "brief_justification": "Excellent response that correctly identifies the RCA's flaws (symptom vs cause, missing causal chain, no evidence), provides comprehensive investigation questions across all system layers, details proper RCA methodology with timeline building, structured analysis techniques, and actionable corrective actions. Well-structured with clear headings and practical examples." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.6, "brief_justification": "Excellent critique identifying symptom vs root cause. Comprehensive questions across multiple dimensions. Well-structured methodology with practical 5 Whys example. The improved incident summary demonstrates clear understanding of proper RCA. Minor deduction for not naming specific RCA frameworks like Fishbone or Fault Tree Analysis." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9, "brief_justification": "Excellent response that thoroughly critiques the superficial RCA, provides comprehensive questions across multiple categories (traffic, code, database, monitoring), demonstrates the 5 Whys technique with a realistic example, and outlines a detailed 6-phase RCA methodology with CAPA framework. Well-structured with clear headings and actionable guidance." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 10, "brief_justification": "Excellent critique identifying symptom treatment vs actual root cause. Comprehensive methodology with detailed questions, phased approach, and concrete examples. The Five Whys demonstration shows true depth - revealing how the actual root cause (deployment pipeline issue) differs from the surface symptom (pool exhaustion). Highly actionable with specific corrective actions." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 8.8, "brief_justification": "Excellent response that thoroughly critiques the weak RCA, provides comprehensive questions across multiple dimensions to find actual root cause, and outlines a proper methodology using 5 Whys, Fault Tree Analysis, and Swiss Cheese model. Well-structured, accurate, and highly actionable." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 8.45, "brief_justification": "Well-structured critique identifying why 'too few connections' is a symptom, not root cause. Comprehensive question framework across multiple dimensions (business, app, DB, infrastructure, monitoring, process). Clear RCA methodology with Five Whys example. Slightly incomplete ending but overall thorough and actionable." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9, "brief_justification": "Excellent response that correctly identifies the original RCA as inadequate, provides specific technical questions across multiple categories, demonstrates proper 5 Whys methodology with a concrete example, and offers a comprehensive incident report template. Well-structured and highly actionable." } ], "meta": { "source": "The Multivac (app.themultivac.com)", "methodology": "10x10 blind peer matrix evaluation", "criteria": "correctness, completeness, clarity, depth, usefulness", "self_judgments": "excluded from rankings", "license": "Open data — cite as: The Multivac (2026)" } }