{
  "evaluation_id": "EVAL-20260315-043330",
  "question_id": "EVAL-20260315-043330",
  "question_text": "This distributed lock implementation has a subtle race condition...",
  "category": "code",
  "timestamp": "2026-03-15T04:33:30.396Z",
  "display_date": "Mar 15, 2026",
  "winner": {
    "name": "Qwen 3 8B",
    "provider": "openrouter",
    "score": 9.33
  },
  "avg_score": 7.587,
  "matrix_size": 75,
  "models_used": [
    {
      "id": "kimi_k25",
      "name": "Kimi K2.5",
      "provider": "openrouter"
    },
    {
      "id": "devstral",
      "name": "Devstral Small",
      "provider": "openrouter"
    },
    {
      "id": "gemma3_27b",
      "name": "Gemma 3 27B",
      "provider": "openrouter"
    },
    {
      "id": "llama4_scout",
      "name": "Llama 4 Scout",
      "provider": "openrouter"
    },
    {
      "id": "phi4",
      "name": "Phi-4 14B",
      "provider": "openrouter"
    },
    {
      "id": "granite_40",
      "name": "Granite 4.0 Micro",
      "provider": "openrouter"
    },
    {
      "id": "qwen3_8b",
      "name": "Qwen 3 8B",
      "provider": "openrouter"
    },
    {
      "id": "mistral_nemo",
      "name": "Mistral Nemo 12B",
      "provider": "openrouter"
    },
    {
      "id": "llama31_8b",
      "name": "Llama 3.1 8B",
      "provider": "openrouter"
    },
    {
      "id": "qwen3_32b",
      "name": "Qwen 3 32B",
      "provider": "openrouter"
    }
  ],
  "rankings": {
    "qwen3_8b": {
      "display_name": "Qwen 3 8B",
      "provider": "openrouter",
      "average_score": 9.33,
      "score_count": 8,
      "min_score": 8.6,
      "max_score": 10,
      "rank": 1
    },
    "kimi_k25": {
      "display_name": "Kimi K2.5",
      "provider": "openrouter",
      "average_score": 9.3,
      "score_count": 9,
      "min_score": 8.65,
      "max_score": 10,
      "rank": 2
    },
    "devstral": {
      "display_name": "Devstral Small",
      "provider": "openrouter",
      "average_score": 9.03,
      "score_count": 8,
      "min_score": 8.05,
      "max_score": 9.6,
      "rank": 3
    },
    "phi4": {
      "display_name": "Phi-4 14B",
      "provider": "openrouter",
      "average_score": 8.52,
      "score_count": 7,
      "min_score": 8.05,
      "max_score": 9.05,
      "rank": 4
    },
    "granite_40": {
      "display_name": "Granite 4.0 Micro",
      "provider": "openrouter",
      "average_score": 8.39,
      "score_count": 8,
      "min_score": 8.05,
      "max_score": 8.85,
      "rank": 5
    },
    "mistral_nemo": {
      "display_name": "Mistral Nemo 12B",
      "provider": "openrouter",
      "average_score": 8.28,
      "score_count": 8,
      "min_score": 6.45,
      "max_score": 9,
      "rank": 6
    },
    "gemma3_27b": {
      "display_name": "Gemma 3 27B",
      "provider": "openrouter",
      "average_score": 8.25,
      "score_count": 9,
      "min_score": 4.75,
      "max_score": 9,
      "rank": 7
    },
    "llama4_scout": {
      "display_name": "Llama 4 Scout",
      "provider": "openrouter",
      "average_score": 8.19,
      "score_count": 8,
      "min_score": 7.6,
      "max_score": 8.8,
      "rank": 8
    },
    "llama31_8b": {
      "display_name": "Llama 3.1 8B",
      "provider": "openrouter",
      "average_score": 5.58,
      "score_count": 9,
      "min_score": 1.75,
      "max_score": 8.5,
      "rank": 9
    },
    "qwen3_32b": {
      "display_name": "Qwen 3 32B",
      "provider": "openrouter",
      "average_score": 1,
      "score_count": 1,
      "min_score": 1,
      "max_score": 1,
      "rank": 10
    }
  },
  "judgments": [
    {
      "judge_key": "qwen3_32b",
      "judge_name": "Qwen 3 32B",
      "respondent_key": "kimi_k25",
      "respondent_name": "Kimi K2.5",
      "weighted_score": 10,
      "brief_justification": "The response accurately identifies 5 classic distributed lock race conditions with clear code examples, fixes, and explanations. It maintains technical depth by addressing specific scenarios (e.g., Redis Sentinel/Cluster issues) and offers actionable solutions like fencing tokens and atomic operations. The request for implementation details ensures tailored guidance."
    },
    {
      "judge_key": "qwen3_32b",
      "judge_name": "Qwen 3 32B",
      "respondent_key": "devstral",
      "respondent_name": "Devstral Small",
      "weighted_score": 8.8,
      "brief_justification": "The response accurately identifies two key race conditions in a distributed lock implementation and provides mitigations. It includes code examples for both the problem and improved solutions, making it clear and actionable. However, completeness could be slightly improved by addressing additional edge cases or alternative implementations."
    },
    {
      "judge_key": "qwen3_32b",
      "judge_name": "Qwen 3 32B",
      "respondent_key": "gemma3_27b",
      "respondent_name": "Gemma 3 27B",
      "weighted_score": 9,
      "brief_justification": "The response accurately identifies common race conditions in distributed locks with clear explanations and mitigation strategies. It is structured well and asks for necessary details to address the specific issue, though completeness is slightly limited without the actual code."
    },
    {
      "judge_key": "qwen3_32b",
      "judge_name": "Qwen 3 32B",
      "respondent_key": "llama4_scout",
      "respondent_name": "Llama 4 Scout",
      "weighted_score": 7.85,
      "brief_justification": "The response accurately identifies common race conditions and mitigation strategies in distributed locks. It provides a clear example using Redis but could elaborate more on edge cases like lock expiration and reentrancy. The code example is practical but lacks handling for scenarios where locks might be released prematurely due to timeouts."
    },
    {
      "judge_key": "qwen3_32b",
      "judge_name": "Qwen 3 32B",
      "respondent_key": "phi4",
      "respondent_name": "Phi-4 14B",
      "weighted_score": 8.25,
      "brief_justification": "The response accurately identifies common causes of race conditions in distributed locks (clock skew, network latency, expiry handling) and offers practical solutions. It is structured clearly but stops short of providing specific algorithmic examples or implementation details that would add depth."
    },
    {
      "judge_key": "qwen3_32b",
      "judge_name": "Qwen 3 32B",
      "respondent_key": "granite_40",
      "respondent_name": "Granite 4.0 Micro",
      "weighted_score": 8.25,
      "brief_justification": "The response correctly identifies race conditions and provides actionable solutions like idempotency, distributed lock services, and atomic operations. It is clear and structured but lacks specific technical details (e.g., Redlock algorithm, lease-based locks) that could enhance depth and completeness."
    },
    {
      "judge_key": "qwen3_32b",
      "judge_name": "Qwen 3 32B",
      "respondent_key": "qwen3_8b",
      "respondent_name": "Qwen 3 8B",
      "weighted_score": 10,
      "brief_justification": "The response accurately identifies the race condition's root cause (non-atomic operations), explains the problem with clear examples, and provides actionable solutions like CAS, leases, and coordination services. It is structured, insightful, and directly addresses the question with practical code examples."
    },
    {
      "judge_key": "qwen3_32b",
      "judge_name": "Qwen 3 32B",
      "respondent_key": "mistral_nemo",
      "respondent_name": "Mistral Nemo 12B",
      "weighted_score": 6.45,
      "brief_justification": "The solution correctly uses Redis' `set` with `nx` and exponential backoff to address the race condition during acquisition, but the `release` method lacks a critical ownership check (e.g., verifying the lock value matches the current owner), which could lead to another race condition if multiple processes attempt to delete the same key. The explanation is clear but incomplete for a robust distributed lock."
    },
    {
      "judge_key": "qwen3_32b",
      "judge_name": "Qwen 3 32B",
      "respondent_key": "llama31_8b",
      "respondent_name": "Llama 3.1 8B",
      "weighted_score": 8.5,
      "brief_justification": "The response correctly acknowledges the need for more context to address the race condition. It is complete in requesting key details but lacks technical depth. The structure is clear and useful for guiding the user to provide necessary information."
    },
    {
      "judge_key": "kimi_k25",
      "judge_name": "Kimi K2.5",
      "respondent_key": "gemma3_27b",
      "respondent_name": "Gemma 3 27B",
      "weighted_score": 8.85,
      "brief_justification": "The response correctly identifies the need for code to diagnose the specific race condition while providing a comprehensive, technically accurate overview of common distributed lock pitfalls (check-then-set, fencing tokens, clock skew) and their mitigations across multiple storage systems. Well-structured and educational, though limited in solving the specific unidentified bug without the implementation."
    },
    {
      "judge_key": "kimi_k25",
      "judge_name": "Kimi K2.5",
      "respondent_key": "llama31_8b",
      "respondent_name": "Llama 3.1 8B",
      "weighted_score": 4.75,
      "brief_justification": "While the response is clear and correctly identifies the need for additional context, it fails to provide any substantive analysis of common distributed lock race conditions (such as TTL/lease expiration races, split-brain scenarios, or check-then-act violations), making it unhelpful for someone seeking immediate technical guidance."
    },
    {
      "judge_key": "devstral",
      "judge_name": "Devstral Small",
      "respondent_key": "kimi_k25",
      "respondent_name": "Kimi K2.5",
      "weighted_score": 9.25,
      "brief_justification": "The response provides a thorough and accurate explanation of common race conditions in distributed lock implementations, with clear examples and fixes. It covers multiple scenarios and offers practical advice for avoiding these issues."
    },
    {
      "judge_key": "devstral",
      "judge_name": "Devstral Small",
      "respondent_key": "gemma3_27b",
      "respondent_name": "Gemma 3 27B",
      "weighted_score": 8.45,
      "brief_justification": "The response provides a thorough and clear explanation of common race conditions in distributed locks, with practical mitigation strategies. It lacks specific analysis without the code but offers a solid foundation for debugging."
    },
    {
      "judge_key": "devstral",
      "judge_name": "Devstral Small",
      "respondent_key": "llama4_scout",
      "respondent_name": "Llama 4 Scout",
      "weighted_score": 7.6,
      "brief_justification": "The response provides a thorough overview of common race conditions in distributed locks and offers practical solutions, but lacks specific analysis of the mentioned implementation."
    },
    {
      "judge_key": "devstral",
      "judge_name": "Devstral Small",
      "respondent_key": "phi4",
      "respondent_name": "Phi-4 14B",
      "weighted_score": 8.05,
      "brief_justification": "The response provides a thorough explanation of race conditions in distributed lock implementations, covering key causes and solutions. It is factually accurate and logically valid, with clear and well-structured communication. The depth of analysis is good, though it could delve deeper into specific technical details. The practical value and actionability are high, offering actionable insights for addressing race conditions."
    },
    {
      "judge_key": "devstral",
      "judge_name": "Devstral Small",
      "respondent_key": "granite_40",
      "respondent_name": "Granite 4.0 Micro",
      "weighted_score": 8.05,
      "brief_justification": "The response provides a comprehensive overview of race conditions in distributed lock implementations and offers practical steps to address them, though it lacks specific technical details."
    },
    {
      "judge_key": "devstral",
      "judge_name": "Devstral Small",
      "respondent_key": "qwen3_8b",
      "respondent_name": "Qwen 3 8B",
      "weighted_score": 9.4,
      "brief_justification": "The response accurately identifies the race condition and provides a thorough, clear, and actionable solution with examples."
    },
    {
      "judge_key": "devstral",
      "judge_name": "Devstral Small",
      "respondent_key": "mistral_nemo",
      "respondent_name": "Mistral Nemo 12B",
      "weighted_score": 8.4,
      "brief_justification": "The response correctly identifies the use of CAS and retry mechanism to address race conditions in distributed locks. It provides a complete and clear example using Redis and Python. The depth is good but could benefit from more explanation of the race condition and why this solution works. The usefulness is high as it provides a practical implementation."
    },
    {
      "judge_key": "devstral",
      "judge_name": "Devstral Small",
      "respondent_key": "llama31_8b",
      "respondent_name": "Llama 3.1 8B",
      "weighted_score": 2,
      "brief_justification": "The response does not address the question at all, instead asking for more information."
    },
    {
      "judge_key": "gemma3_27b",
      "judge_name": "Gemma 3 27B",
      "respondent_key": "qwen3_32b",
      "respondent_name": "Qwen 3 32B",
      "weighted_score": 1,
      "brief_justification": "The response is empty, providing no information or analysis related to the question about a race condition in a distributed lock implementation."
    },
    {
      "judge_key": "gemma3_27b",
      "judge_name": "Gemma 3 27B",
      "respondent_key": "kimi_k25",
      "respondent_name": "Kimi K2.5",
      "weighted_score": 9.2,
      "brief_justification": "The response accurately identifies several common race conditions in distributed locks and offers practical fixes. It's well-organized and clearly explains each issue, and proactively asks for the implementation to provide more tailored advice."
    },
    {
      "judge_key": "gemma3_27b",
      "judge_name": "Gemma 3 27B",
      "respondent_key": "devstral",
      "respondent_name": "Devstral Small",
      "weighted_score": 9.4,
      "brief_justification": "The response accurately identifies and explains common race conditions in distributed locks with a Redis example. The improved implementation addresses these issues effectively, and the explanation is clear and well-structured. Could benefit from discussing other lock implementations (e.g., Zookeeper)."
    },
    {
      "judge_key": "gemma3_27b",
      "judge_name": "Gemma 3 27B",
      "respondent_key": "llama4_scout",
      "respondent_name": "Llama 4 Scout",
      "weighted_score": 8.25,
      "brief_justification": "The response accurately identifies common race conditions in distributed locks and provides mitigation strategies with a practical Redis example. While comprehensive, it could delve deeper into more complex scenarios like clock drift and fencing tokens for a higher depth score."
    },
    {
      "judge_key": "gemma3_27b",
      "judge_name": "Gemma 3 27B",
      "respondent_key": "granite_40",
      "respondent_name": "Granite 4.0 Micro",
      "weighted_score": 8.85,
      "brief_justification": "The response correctly identifies the problem and offers practical, relevant solutions for addressing race conditions in distributed locks. While it doesn't delve into *specific* code examples, it covers the key strategies effectively."
    },
    {
      "judge_key": "gemma3_27b",
      "judge_name": "Gemma 3 27B",
      "respondent_key": "qwen3_8b",
      "respondent_name": "Qwen 3 8B",
      "weighted_score": 9.6,
      "brief_justification": "The response accurately identifies the race condition, explains the root cause with a clear scenario, and provides practical solutions with code examples. It covers important considerations like leases and coordination services, offering a comprehensive and useful explanation."
    },
    {
      "judge_key": "gemma3_27b",
      "judge_name": "Gemma 3 27B",
      "respondent_key": "mistral_nemo",
      "respondent_name": "Mistral Nemo 12B",
      "weighted_score": 9,
      "brief_justification": "The response provides a correct and useful implementation using CAS with retry logic to address the race condition. While it explains the solution well, a deeper dive into potential issues like lock starvation or more complex distributed consensus algorithms would increase the depth."
    },
    {
      "judge_key": "gemma3_27b",
      "judge_name": "Gemma 3 27B",
      "respondent_key": "llama31_8b",
      "respondent_name": "Llama 3.1 8B",
      "weighted_score": 7.55,
      "brief_justification": "The response correctly identifies the challenge and asks for necessary clarifying information, demonstrating understanding of the problem domain. However, it doesn't offer any initial analysis or potential causes, relying entirely on gathering more details before providing a solution."
    },
    {
      "judge_key": "llama4_scout",
      "judge_name": "Llama 4 Scout",
      "respondent_key": "kimi_k25",
      "respondent_name": "Kimi K2.5",
      "weighted_score": 8.8,
      "brief_justification": "The response provides a thorough analysis of common race conditions in distributed lock implementations, along with fixes and example code. However, it requests the specific implementation to pinpoint the exact issue, which slightly limits completeness."
    },
    {
      "judge_key": "llama4_scout",
      "judge_name": "Llama 4 Scout",
      "respondent_key": "devstral",
      "respondent_name": "Devstral Small",
      "weighted_score": 9.35,
      "brief_justification": "The response accurately identifies and addresses a subtle race condition in a distributed lock implementation. It provides a thorough analysis, clear explanations, and practical solutions."
    },
    {
      "judge_key": "llama4_scout",
      "judge_name": "Llama 4 Scout",
      "respondent_key": "gemma3_27b",
      "respondent_name": "Gemma 3 27B",
      "weighted_score": 4.75,
      "brief_justification": "The response does not directly address the provided distributed lock implementation's race condition but offers a comprehensive overview of common race conditions in distributed locks, their manifestations, and mitigations."
    },
    {
      "judge_key": "llama4_scout",
      "judge_name": "Llama 4 Scout",
      "respondent_key": "phi4",
      "respondent_name": "Phi-4 14B",
      "weighted_score": 8.6,
      "brief_justification": "The response accurately identifies and discusses common causes and solutions for race conditions in distributed lock implementations, providing a comprehensive overview. However, it could benefit from more specific examples or code snippets to enhance completeness and depth."
    },
    {
      "judge_key": "llama4_scout",
      "judge_name": "Llama 4 Scout",
      "respondent_key": "granite_40",
      "respondent_name": "Granite 4.0 Micro",
      "weighted_score": 8.35,
      "brief_justification": "The response provides a thorough and clear analysis of addressing a race condition in a distributed lock implementation, with actionable steps and considerations for testing and monitoring."
    },
    {
      "judge_key": "llama4_scout",
      "judge_name": "Llama 4 Scout",
      "respondent_key": "qwen3_8b",
      "respondent_name": "Qwen 3 8B",
      "weighted_score": 10,
      "brief_justification": "The response accurately identifies and explains a subtle race condition in distributed lock implementations, providing a thorough breakdown of the root cause, implications, and effective solutions with practical examples."
    },
    {
      "judge_key": "llama4_scout",
      "judge_name": "Llama 4 Scout",
      "respondent_key": "mistral_nemo",
      "respondent_name": "Mistral Nemo 12B",
      "weighted_score": 8.4,
      "brief_justification": "The response provides a clear and mostly correct solution to the race condition issue in a distributed lock implementation using Redis and Python, with a good example and explanation."
    },
    {
      "judge_key": "llama4_scout",
      "judge_name": "Llama 4 Scout",
      "respondent_key": "llama31_8b",
      "respondent_name": "Llama 3.1 8B",
      "weighted_score": 1.75,
      "brief_justification": "The response does not provide a solution or analysis of the race condition but instead requests more information. The clarity and usefulness of the response to ask for more details are moderate."
    },
    {
      "judge_key": "phi4",
      "judge_name": "Phi-4 14B",
      "respondent_key": "kimi_k25",
      "respondent_name": "Kimi K2.5",
      "weighted_score": 9.8,
      "brief_justification": "The response accurately describes common race conditions in distributed locks and provides precise fixes. It covers multiple scenarios and solutions, offering deep insights and practical advice."
    },
    {
      "judge_key": "phi4",
      "judge_name": "Phi-4 14B",
      "respondent_key": "devstral",
      "respondent_name": "Devstral Small",
      "weighted_score": 8.6,
      "brief_justification": "The response correctly identifies and mitigates race conditions in a distributed lock implementation using Redis, providing a robust solution with unique identifiers and atomic operations. It covers the main issues and solutions but could include more examples or alternative approaches for completeness."
    },
    {
      "judge_key": "phi4",
      "judge_name": "Phi-4 14B",
      "respondent_key": "gemma3_27b",
      "respondent_name": "Gemma 3 27B",
      "weighted_score": 8.65,
      "brief_justification": "The response accurately describes common race conditions in distributed locks and their mitigations. It lacks the specific code analysis but provides a thorough overview. The explanation is clear and insightful, offering practical mitigation strategies."
    },
    {
      "judge_key": "phi4",
      "judge_name": "Phi-4 14B",
      "respondent_key": "llama4_scout",
      "respondent_name": "Llama 4 Scout",
      "weighted_score": 8.75,
      "brief_justification": "The response accurately identifies common race conditions in distributed lock implementations and provides effective mitigation strategies. It offers a clear example using Redis, demonstrating atomic operations and lease mechanisms to address race conditions. The response is thorough, clear, and useful, covering practical solutions and considerations for distributed lock complexities."
    },
    {
      "judge_key": "phi4",
      "judge_name": "Phi-4 14B",
      "respondent_key": "granite_40",
      "respondent_name": "Granite 4.0 Micro",
      "weighted_score": 8.6,
      "brief_justification": "The response accurately identifies the issue of race conditions in distributed lock implementations and provides practical steps to address them, including understanding the problem, implementing idempotency, using distributed lock services, implementing timeouts, using atomic operations, and rigorous testing. The response is clear and structured, offering actionable solutions. However, it could include more specific examples or edge cases to enhance completeness and depth."
    },
    {
      "judge_key": "phi4",
      "judge_name": "Phi-4 14B",
      "respondent_key": "qwen3_8b",
      "respondent_name": "Qwen 3 8B",
      "weighted_score": 9.45,
      "brief_justification": "The response accurately identifies the race condition due to non-atomic operations and provides a comprehensive explanation with practical solutions. It is clear and well-structured, offering deep insights into the problem and its resolution. The explanation is thorough, though a brief mention of potential pitfalls in implementation could enhance completeness."
    },
    {
      "judge_key": "phi4",
      "judge_name": "Phi-4 14B",
      "respondent_key": "mistral_nemo",
      "respondent_name": "Mistral Nemo 12B",
      "weighted_score": 8.4,
      "brief_justification": "The response correctly identifies and addresses the race condition using a Compare and Set (CAS) pattern with Redis. The explanation is clear and the code is practical, though it could include more details on potential pitfalls or alternative approaches."
    },
    {
      "judge_key": "phi4",
      "judge_name": "Phi-4 14B",
      "respondent_key": "llama31_8b",
      "respondent_name": "Llama 3.1 8B",
      "weighted_score": 7.45,
      "brief_justification": "The response correctly identifies the need for more context to address the race condition effectively. It provides clear guidance on the questions to ask for further information, which is useful for troubleshooting. However, it lacks direct insight into potential solutions or deeper analysis of the problem."
    },
    {
      "judge_key": "granite_40",
      "judge_name": "Granite 4.0 Micro",
      "respondent_key": "kimi_k25",
      "respondent_name": "Kimi K2.5",
      "weighted_score": 8.8,
      "brief_justification": "The response accurately identifies common distributed lock race conditions, provides concrete fixes, and offers a clear explanation of each issue; however, it could have included a brief example of a Lua script for atomic unlock to further demonstrate depth."
    },
    {
      "judge_key": "granite_40",
      "judge_name": "Granite 4.0 Micro",
      "respondent_key": "devstral",
      "respondent_name": "Devstral Small",
      "weighted_score": 8.8,
      "brief_justification": "The response accurately identifies common race conditions in distributed lock implementations and provides clear, detailed explanations and improved code examples to mitigate these issues, demonstrating strong correctness, completeness, clarity, and usefulness while maintaining a high level of depth."
    },
    {
      "judge_key": "granite_40",
      "judge_name": "Granite 4.0 Micro",
      "respondent_key": "gemma3_27b",
      "respondent_name": "Gemma 3 27B",
      "weighted_score": 8.55,
      "brief_justification": "The response accurately identifies common distributed lock race conditions, provides clear explanations, and offers relevant mitigation strategies, though it could delve deeper into specific implementation details."
    },
    {
      "judge_key": "granite_40",
      "judge_name": "Granite 4.0 Micro",
      "respondent_key": "llama4_scout",
      "respondent_name": "Llama 4 Scout",
      "weighted_score": 7.8,
      "brief_justification": "The response accurately identifies common race conditions in distributed locks and provides relevant mitigation strategies, though it could delve deeper into specific algorithms like lease-based or quorum-based locks for higher depth."
    },
    {
      "judge_key": "granite_40",
      "judge_name": "Granite 4.0 Micro",
      "respondent_key": "phi4",
      "respondent_name": "Phi-4 14B",
      "weighted_score": 8.8,
      "brief_justification": "The response accurately identifies common causes of race conditions in distributed lock implementations and provides relevant solutions, demonstrating good correctness, completeness, clarity, and usefulness while maintaining a solid level of depth."
    },
    {
      "judge_key": "granite_40",
      "judge_name": "Granite 4.0 Micro",
      "respondent_key": "qwen3_8b",
      "respondent_name": "Qwen 3 8B",
      "weighted_score": 8.8,
      "brief_justification": "The response accurately identifies the race condition cause, explains subtleties, proposes atomic solutions, and provides clear examples, demonstrating strong correctness, completeness, clarity, and usefulness while maintaining good depth."
    },
    {
      "judge_key": "granite_40",
      "judge_name": "Granite 4.0 Micro",
      "respondent_key": "mistral_nemo",
      "respondent_name": "Mistral Nemo 12B",
      "weighted_score": 8.4,
      "brief_justification": "The response accurately identifies the race condition issue and provides a practical solution using CAS and retry mechanism with Redis. It is well-structured, clear, and offers actionable code example, though it could delve deeper into potential edge cases and performance considerations."
    },
    {
      "judge_key": "granite_40",
      "judge_name": "Granite 4.0 Micro",
      "respondent_key": "llama31_8b",
      "respondent_name": "Llama 3.1 8B",
      "weighted_score": 6.5,
      "brief_justification": "The response correctly identifies a subtle race condition in a distributed lock implementation and acknowledges the challenge of identifying and fixing it. However, it lacks specific details about the programming language, architecture, and context of the issue, limiting its completeness and depth. The clarity is good, but it could be more informative. The usefulness is moderate as it prompts the user for more information to provide a more targeted response."
    },
    {
      "judge_key": "qwen3_8b",
      "judge_name": "Qwen 3 8B",
      "respondent_key": "kimi_k25",
      "respondent_name": "Kimi K2.5",
      "weighted_score": 9.6,
      "brief_justification": "The response accurately identifies common distributed lock race conditions with clear examples and fixes. It provides actionable solutions and prompts for additional context to diagnose specific issues."
    },
    {
      "judge_key": "qwen3_8b",
      "judge_name": "Qwen 3 8B",
      "respondent_key": "devstral",
      "respondent_name": "Devstral Small",
      "weighted_score": 9.6,
      "brief_justification": "The response accurately identifies race conditions in distributed locks, provides detailed explanations, and offers a robust solution with clear code examples. It covers key concepts thoroughly while maintaining practical value."
    },
    {
      "judge_key": "qwen3_8b",
      "judge_name": "Qwen 3 8B",
      "respondent_key": "gemma3_27b",
      "respondent_name": "Gemma 3 27B",
      "weighted_score": 8.65,
      "brief_justification": "The response accurately identifies common race conditions in distributed locks and provides detailed mitigation strategies. However, it lacks specific analysis of the implementation in question without code, limiting its direct applicability."
    },
    {
      "judge_key": "qwen3_8b",
      "judge_name": "Qwen 3 8B",
      "respondent_key": "llama4_scout",
      "respondent_name": "Llama 4 Scout",
      "weighted_score": 8.8,
      "brief_justification": "The response thoroughly explains common race conditions and mitigation strategies with practical examples, though it lacks specificity for the user's particular implementation."
    },
    {
      "judge_key": "qwen3_8b",
      "judge_name": "Qwen 3 8B",
      "respondent_key": "phi4",
      "respondent_name": "Phi-4 14B",
      "weighted_score": 9.05,
      "brief_justification": "The response accurately identifies common causes of race conditions in distributed locks and provides actionable solutions. It covers key concepts like clock skew, network latency, and consensus protocols, though it could elaborate more on specific implementation patterns like lease-based locks or vector clocks."
    },
    {
      "judge_key": "qwen3_8b",
      "judge_name": "Qwen 3 8B",
      "respondent_key": "granite_40",
      "respondent_name": "Granite 4.0 Micro",
      "weighted_score": 8.05,
      "brief_justification": "The response provides accurate solutions for race conditions but lacks specific examples of common distributed lock issues like 'lost update' or 'check-and-set' races. The structure is clear but could include more technical depth on implementation details."
    },
    {
      "judge_key": "qwen3_8b",
      "judge_name": "Qwen 3 8B",
      "respondent_key": "mistral_nemo",
      "respondent_name": "Mistral Nemo 12B",
      "weighted_score": 8.4,
      "brief_justification": "The response provides a correct and practical solution using Redis CAS and retry logic, but lacks deeper discussion of edge cases like lock expiration or deadlocks."
    },
    {
      "judge_key": "qwen3_8b",
      "judge_name": "Qwen 3 8B",
      "respondent_key": "llama31_8b",
      "respondent_name": "Llama 3.1 8B",
      "weighted_score": 6.05,
      "brief_justification": "The response correctly acknowledges the need for more context but fails to address the race condition directly. It provides clear questions but lacks analysis or solutions."
    },
    {
      "judge_key": "mistral_nemo",
      "judge_name": "Mistral Nemo 12B",
      "respondent_key": "kimi_k25",
      "respondent_name": "Kimi K2.5",
      "weighted_score": 8.65,
      "brief_justification": "The response accurately identifies several common race conditions in distributed locks, providing clear and detailed explanations along with appropriate fixes for each. However, it lacks a summary or ranking of the issues' severity, which could have improved its clarity and usefulness."
    },
    {
      "judge_key": "mistral_nemo",
      "judge_name": "Mistral Nemo 12B",
      "respondent_key": "devstral",
      "respondent_name": "Devstral Small",
      "weighted_score": 8.05,
      "brief_justification": "The response accurately identifies and explains a common race condition in distributed lock implementations, provides a detailed and clear example, and offers a practical solution with improved code. However, it could delve deeper into potential consequences or real-world examples of such race conditions."
    },
    {
      "judge_key": "mistral_nemo",
      "judge_name": "Mistral Nemo 12B",
      "respondent_key": "gemma3_27b",
      "respondent_name": "Gemma 3 27B",
      "weighted_score": 8.45,
      "brief_justification": "The response is mostly correct and comprehensive, providing a detailed explanation of common race conditions in distributed locks. However, it lacks specific code analysis and thus scores lower on usefulness."
    },
    {
      "judge_key": "mistral_nemo",
      "judge_name": "Mistral Nemo 12B",
      "respondent_key": "llama4_scout",
      "respondent_name": "Llama 4 Scout",
      "weighted_score": 7.85,
      "brief_justification": "The response accurately identifies common race conditions in distributed locks (correctness: 8) and provides a useful example using Redis (usefulness: 7). However, it lacks specific details about the original implementation's race condition (completeness: 7). The explanation is clear and well-structured (clarity: 9), and it offers insightful analysis beyond surface level (depth: 8)."
    },
    {
      "judge_key": "mistral_nemo",
      "judge_name": "Mistral Nemo 12B",
      "respondent_key": "phi4",
      "respondent_name": "Phi-4 14B",
      "weighted_score": 8.1,
      "brief_justification": "The response accurately explains race conditions in distributed locks (correctness: 9), covers common causes and solutions (completeness: 8), is well-structured and clear (clarity: 8), and provides insightful analysis (depth: 8). However, it could be more actionable by providing specific implementation steps (usefulness: 7)."
    },
    {
      "judge_key": "mistral_nemo",
      "judge_name": "Mistral Nemo 12B",
      "respondent_key": "granite_40",
      "respondent_name": "Granite 4.0 Micro",
      "weighted_score": 8.4,
      "brief_justification": "The response accurately identifies the race condition issue and provides detailed, practical steps to address it. However, it could delve deeper into specific code examples or more complex scenarios for a higher depth score."
    },
    {
      "judge_key": "mistral_nemo",
      "judge_name": "Mistral Nemo 12B",
      "respondent_key": "qwen3_8b",
      "respondent_name": "Qwen 3 8B",
      "weighted_score": 8.6,
      "brief_justification": "The response accurately diagnoses the race condition (correctness), covers the root cause and potential solutions in depth (completeness, depth), and presents a clear, well-structured explanation (clarity). It also provides practical, actionable steps to resolve the issue (usefulness)."
    },
    {
      "judge_key": "mistral_nemo",
      "judge_name": "Mistral Nemo 12B",
      "respondent_key": "llama31_8b",
      "respondent_name": "Llama 3.1 8B",
      "weighted_score": 5.65,
      "brief_justification": "The response correctly identifies the issue as a race condition but lacks specific details on how to diagnose or fix it. It asks for more context, which is useful, but doesn't provide concrete steps or guidance."
    },
    {
      "judge_key": "llama31_8b",
      "judge_name": "Llama 3.1 8B",
      "respondent_key": "kimi_k25",
      "respondent_name": "Kimi K2.5",
      "weighted_score": 9.6,
      "brief_justification": "The response accurately identifies and explains multiple subtle race conditions in distributed lock implementations, providing fixes and code examples for each. It also asks for the implementation code to be shared, demonstrating a willingness to help diagnose the specific issue."
    },
    {
      "judge_key": "llama31_8b",
      "judge_name": "Llama 3.1 8B",
      "respondent_key": "devstral",
      "respondent_name": "Devstral Small",
      "weighted_score": 9.6,
      "brief_justification": "The response accurately identifies and addresses potential race conditions in a distributed lock implementation, providing a clear and improved solution."
    },
    {
      "judge_key": "llama31_8b",
      "judge_name": "Llama 3.1 8B",
      "respondent_key": "gemma3_27b",
      "respondent_name": "Gemma 3 27B",
      "weighted_score": 8.9,
      "brief_justification": "The response provides a thorough and accurate explanation of common race conditions in distributed locks, along with mitigation strategies. However, it does not directly address the original question about the specific implementation's race condition."
    },
    {
      "judge_key": "llama31_8b",
      "judge_name": "Llama 3.1 8B",
      "respondent_key": "llama4_scout",
      "respondent_name": "Llama 4 Scout",
      "weighted_score": 8.6,
      "brief_justification": "The response accurately describes common issues and solutions for distributed locks, but could benefit from more specific code examples and implementation details."
    },
    {
      "judge_key": "llama31_8b",
      "judge_name": "Llama 3.1 8B",
      "respondent_key": "phi4",
      "respondent_name": "Phi-4 14B",
      "weighted_score": 8.8,
      "brief_justification": "The response accurately identifies potential causes of race conditions in distributed locks, provides actionable solutions, and offers a comprehensive overview of the topic."
    },
    {
      "judge_key": "llama31_8b",
      "judge_name": "Llama 3.1 8B",
      "respondent_key": "granite_40",
      "respondent_name": "Granite 4.0 Micro",
      "weighted_score": 8.6,
      "brief_justification": "The response accurately identifies the issue, provides a clear and structured explanation of the problem and its potential solutions, and offers actionable advice. However, it could benefit from a more detailed explanation of the concepts and a clearer summary of the key takeaways."
    },
    {
      "judge_key": "llama31_8b",
      "judge_name": "Llama 3.1 8B",
      "respondent_key": "qwen3_8b",
      "respondent_name": "Qwen 3 8B",
      "weighted_score": 8.8,
      "brief_justification": "The response accurately identifies the root cause of the race condition, provides a clear explanation, and offers practical solutions with examples, making it highly useful for addressing the issue."
    },
    {
      "judge_key": "llama31_8b",
      "judge_name": "Llama 3.1 8B",
      "respondent_key": "mistral_nemo",
      "respondent_name": "Mistral Nemo 12B",
      "weighted_score": 8.8,
      "brief_justification": "The response accurately addresses the race condition in the distributed lock implementation, provides a clear and well-structured example, and offers a practical solution with exponential backoff for retrying. However, it could benefit from a more in-depth explanation of the CAS technique and its implications."
    }
  ],
  "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)"
  }
}