{ "evaluation_id": "EVAL-20260402-121519", "question_id": "CODE-002", "question_text": "Write a Python function that parses deeply nested JSON with the following requirements:\n1. Handle missing keys gracefully (return None, don't crash)\n2. Support a path syntax like \"user.profile.settings.theme\"\n3. Handle arrays with index syntax like \"users[0].name\"\n4. Return a typed result with proper error messages for debugging\n5. Handle circular reference detection\n\nInclude type hints and comprehensive docstrings.", "category": "code", "timestamp": "2026-01-19T00:00:00.000Z", "display_date": "Jan 19, 2026", "winner": { "name": "GPT-5.4", "provider": "openrouter", "score": 9.13 }, "avg_score": 7.22, "matrix_size": 88, "models_used": [ { "id": "claude_opus_46", "name": "Claude Opus 4.6", "provider": "openrouter" }, { "id": "gemini_31_pro", "name": "Gemini 3.1 Pro", "provider": "openrouter" }, { "id": "claude_sonnet_46", "name": "Claude Sonnet 4.6", "provider": "openrouter" }, { "id": "grok_420", "name": "Grok 4.20", "provider": "openrouter" }, { "id": "deepseek_v4", "name": "DeepSeek V4", "provider": "openrouter" }, { "id": "gpt_oss_120b", "name": "GPT-OSS-120B", "provider": "OpenAI" }, { "id": "gemini_3_flash", "name": "Gemini 3 Flash Preview", "provider": "Google" }, { "id": "minimax_m25", "name": "MiniMax M2.5", "provider": "openrouter" }, { "id": "mimo_v2_flash", "name": "MiMo-V2-Flash", "provider": "Xiaomi" }, { "id": "gpt_5_4", "name": "GPT-5.4", "provider": "openrouter" } ], "rankings": { "gpt_5_4": { "display_name": "GPT-5.4", "provider": "openrouter", "average_score": 9.13, "score_count": 9, "min_score": 8.8, "max_score": 9.8, "rank": 1 }, "gpt_oss_120b": { "display_name": "GPT-OSS-120B", "provider": "OpenAI", "average_score": 8.86, "score_count": 9, "min_score": 7.65, "max_score": 9.8, "rank": 2 }, "mimo_v2_flash": { "display_name": "MiMo-V2-Flash", "provider": "Xiaomi", "average_score": 8.52, "score_count": 9, "min_score": 6.75, "max_score": 9.8, "rank": 3 }, "deepseek_v4": { "display_name": "DeepSeek V4", "provider": "openrouter", "average_score": 8.16, "score_count": 9, "min_score": 6.75, "max_score": 9.8, "rank": 4 }, "grok_420": { "display_name": "Grok 4.20", "provider": "openrouter", "average_score": 7.87, "score_count": 9, "min_score": 6, "max_score": 9.6, "rank": 5 }, "gemini_3_flash": { "display_name": "Gemini 3 Flash Preview", "provider": "Google", "average_score": 7.58, "score_count": 9, "min_score": 6.3, "max_score": 9.2, "rank": 6 }, "claude_opus_46": { "display_name": "Claude Opus 4.6", "provider": "openrouter", "average_score": 7.26, "score_count": 9, "min_score": 3.35, "max_score": 9.6, "rank": 7 }, "claude_sonnet_46": { "display_name": "Claude Sonnet 4.6", "provider": "openrouter", "average_score": 6.06, "score_count": 9, "min_score": 3.25, "max_score": 9.35, "rank": 8 }, "minimax_m25": { "display_name": "MiniMax M2.5", "provider": "openrouter", "average_score": 6.01, "score_count": 9, "min_score": 2.85, "max_score": 9, "rank": 9 }, "gemini_31_pro": { "display_name": "Gemini 3.1 Pro", "provider": "openrouter", "average_score": 2.75, "score_count": 7, "min_score": 0.6, "max_score": 6.85, "rank": 10 } }, "judgments": [ { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 6.4, "brief_justification": "The response shows a solid design with type hints, dataclasses, path tokenization, and error/status modeling, but it is incomplete/truncated and likely not fully executable as shown. It addresses most requested features conceptually, including missing keys, dot/bracket paths, typed results, and circular-reference tracking, but the missing remainder prevents confirming full correctness and comprehensive handling." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 1.85, "brief_justification": "The response is essentially incomplete: it promises a solution but only includes a short preamble and truncated imports, with no function implementation, docstrings, circular reference handling logic, or usable typed result. Clear intro, but it fails to answer the request." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 3.25, "brief_justification": "The response is truncated and incomplete, so the main function is not fully implemented. What is present is fairly clear and includes type hints/docstrings, but it fails to fully satisfy the requirements or provide a usable solution." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 6.5, "brief_justification": "Clear and fairly complete, but correctness is weakened by flawed circular reference detection and the lack of a true typed result/error container despite claiming one." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 6.75, "brief_justification": "Mostly correct and well-structured with good type hints, docstrings, path parsing, and debug-friendly return values. However, the response is truncated, the typed result is only loosely typed via Tuple[Optional[T], Optional[str]], and circular reference detection can falsely flag repeated shared objects as circular references rather than true cycles." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 7.95, "brief_justification": "Well-structured and mostly correct, with strong docstrings and practical typing/error handling. Main issue: path parsing/walking is incomplete for some valid array cases such as consecutive indexes or root-level list access, and circular detection messaging/docs are slightly inconsistent." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 6.3, "brief_justification": "Clear and mostly workable, but it does not truly return a typed result with structured error messages, and the circular reference detection is flawed because revisiting a previously seen container on a valid path can incorrectly return default. Type hints are also fairly loose." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 2.85, "brief_justification": "The response starts with a promising design, type hints, and docstrings, but the implementation is truncated and incomplete. Key requirements are not fully demonstrated or verified, circular reference handling is only partial, and the provided code would not run as-is." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 7.55, "brief_justification": "Mostly solid and well-documented, with good support for dot paths, array indices, defaults, and debug messages. However, circular reference detection is only partial and path parsing is limited in some edge cases (e.g., nested/multiple brackets, direct list root indexing like '[0]')." }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.2, "brief_justification": "The response is highly correct, implementing all five requirements: graceful missing key handling, dot-path syntax, array index syntax, typed ParseResult with error messages, and circular reference detection. The code is well-structured with comprehensive docstrings, type hints, and clear examples. Minor notes: the circular reference detection tracks container ids seen along the path but could theoretically have false negatives if Python reuses object ids (unlikely in practice), and it doesn't s" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 1.65, "brief_justification": "The response is severely incomplete - it only provides a brief introduction and the very beginning of import statements, with no actual function implementation. None of the 5 requirements are fulfilled since no working code is provided. The description mentions good approaches (dataclass for results, regex for parsing, visited IDs for circular references) but without actual code, this is essentially useless." }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 6.25, "brief_justification": "The response is well-structured with excellent docstrings, type hints, and a thoughtful ParseResult design with unwrap/unwrap_or helpers. However, the code is truncated mid-function - the core traversal logic (dict lookup, list indexing, and the _steps_to_str helper) is cut off, meaning the function is incomplete and non-functional as provided. The circular reference detection approach using id() tracking is reasonable but has a flaw: it adds container ids as it traverses downward, which means i" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 6, "brief_justification": "The code has several correctness issues: (1) The circular reference detection is fundamentally flawed - it adds and immediately discards IDs in the finally block, so it can never actually detect circular references across recursive calls. (2) When the path starts with an array index like accessing a top-level list, the regex-based parsing won't handle it properly. (3) The `result if result is not None else default` at the end means if the actual value at the path is legitimately None or 0/False," }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 7.4, "brief_justification": "The implementation is well-structured with good type hints, docstrings, and error handling. However, there are notable issues: (1) The circular reference detection using a list with `in` checks is O(n) per lookup—a set would be better; (2) Negative array indices are explicitly rejected, which is a design choice but limits flexibility; (3) The TypeVar T for the default/return type is not quite correct—the return type should be Union[Any, T] since the actual value from JSON isn't constrained by T;" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 8.6, "brief_justification": "The implementation is well-structured with excellent documentation, type hints, and docstrings. It satisfies all five requirements. However, there are some correctness concerns: (1) The circular reference detection has a subtle issue - it adds the root `data` dict's id only when first encountered as `current`, but the path 'self.self' in the doctest example would need to traverse the same dict twice. The detection works because after resolving 'self' the current becomes the same dict (same id), " }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 7.8, "brief_justification": "The solution correctly handles most requirements: path parsing with dot/bracket notation, graceful missing key handling, array index access, and circular reference detection. However, the circular reference detection has a flaw - visited_ids is never cleaned up when backtracking, which could cause false positives in non-circular structures with shared references. The JSONPathError class is defined but never used, and requirement 4 ('typed result with proper error messages for debugging') is only" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 5.65, "brief_justification": "The response is well-structured with good type hints, docstrings, and design patterns (ParseResult, error enums, circular reference detection). However, the code is critically incomplete - the main `get()` method is cut off mid-implementation, meaning the core traversal logic is missing. Without the actual traversal loop, the function cannot work. The path parsing logic has limitations (doesn't handle keys with hyphens or numeric-only keys). The circular reference detection approach using object" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 8.2, "brief_justification": "The solution is well-structured with proper type hints, comprehensive docstrings, and handles all five requirements. The circular reference detection works correctly using object IDs in a visited set with backtracking. The path parsing with dot notation and bracket indexing is solid. Minor issues: the circular reference detection using `id()` could theoretically have false positives if objects are garbage collected and IDs reused (unlikely in practice), and the backtracking pattern in the ref_st" }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.4, "brief_justification": "" }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 5.7, "brief_justification": "The response sets up an excellent, robust architecture with great type hints and docstrings, but cuts off before implementing the core deep_get function, rendering it incomplete and unusable as-is." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 4.8, "brief_justification": "The code is well-designed and clearly written with excellent docstrings and type hints, but it is severely truncated at the end, resulting in a SyntaxError and missing core traversal logic." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 7.15, "brief_justification": "" }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 7.6, "brief_justification": "" }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 7.65, "brief_justification": "" }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 6.8, "brief_justification": "" }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 4.35, "brief_justification": "The code provides a well-structured foundation with type hints and docstrings, but the response is severely truncated and missing the core traversal logic, rendering it unusable." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 8.2, "brief_justification": "" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9, "brief_justification": "Excellent implementation covering all five requirements: graceful missing key handling, dot-path syntax, array index syntax, typed results with error messages, and circular reference detection. Code is well-structured with comprehensive docstrings, type hints, and clear examples. Minor limitation: circular reference detection using id() may miss some edge cases (e.g., it tracks containers visited across the entire traversal rather than just the current path, which could produce false positives i" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 8, "brief_justification": "The response demonstrates strong design with proper enums, dataclasses, type hints, and comprehensive docstrings. The tokenizer handles complex path syntax including chained brackets. Circular reference detection is implemented. However, the response appears truncated - the docstring example is cut off mid-sentence, and the actual traversal logic (the core of deep_get) is missing. The architecture and supporting code are excellent, but the incomplete implementation prevents a higher score on com" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 1.85, "brief_justification": "The response is severely incomplete - it only contains an introduction and imports but no actual implementation code. The function body, docstrings, circular reference detection, path parsing, and all other required features are missing. The response cuts off after the import statement, making it essentially useless as a solution." }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 6.75, "brief_justification": "The implementation is mostly correct and well-documented, but has notable issues: (1) The circular reference detection is flawed - using id() with discard in finally means it won't actually catch circular references in nested structures; (2) The path parser has a bug where paths starting with array syntax like '[0].name' won't work correctly; (3) The regex-based path parsing doesn't handle all edge cases like consecutive brackets 'a[0][1]'; (4) The `result if result is not None else default` log" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.2, "brief_justification": "The solution is well-structured with proper type hints, docstrings, and custom exception classes. It handles most requirements well: graceful error handling via tuple returns, dot/array path syntax, and circular reference detection. However, the circular reference detection has a flaw - using a flat list of visited IDs doesn't properly track the traversal path, potentially causing false positives when the same object appears in different branches. The response is also cut off at the end. The _vi" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 8.95, "brief_justification": "Excellent implementation with comprehensive docstrings, type hints, and clean architecture. The circular reference detection using id() tracking is correct but has a subtle flaw - it tracks visited containers globally rather than per-path, which could cause false positives in DAG structures (same object referenced from multiple valid paths). The tokenizer regex may also miss some edge cases like consecutive brackets or paths starting with brackets. The overload pattern, custom exception class, a" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 7.55, "brief_justification": "The solution is well-structured and handles most requirements effectively. Path parsing, graceful failure, and type hints are solid. However, the circular reference detection has a subtle bug: `visited_ids` is shared across all recursive calls but never cleaned up when backtracking, meaning legitimate revisits of the same object via different paths would incorrectly return default. The 'typed result with proper error messages' requirement (req #4) is only partially met—the function returns Any w" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 6.4, "brief_justification": "The response shows good structure with proper type hints, docstrings, enums, and dataclasses. The path parsing logic is well-thought-out. However, the response is incomplete - it cuts off mid-function in the `get` method, missing the core traversal logic, circular reference detection implementation, and array index handling. The circular reference detection approach using `id()` is noted but not fully implemented. The regex pattern may not handle all edge cases like `[0].key` at the start of a p" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 8.2, "brief_justification": "The solution is well-structured with good type hints and docstrings. It handles most requirements: dot notation, array indexing, missing keys, and circular references. However, the circular reference detection has a flaw - using object IDs with backtracking (discarding from ref_stack) means true circular references might not always be caught correctly, as the same object could be revisited after being removed from the stack. The response is cut off at the end. The typed result via tuple is a rea" }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 8.8, "brief_justification": "The code comprehensively meets all specified requirements with robust error handling, circular reference detection, type checking, and clear documentation. Minor issues exist in _is_instance_of_type for complex generics and _format_resolved_path for pure index paths, but overall it is highly accurate and practical." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 8.65, "brief_justification": "The code is factually correct, logically sound, and implements all requested features (path parsing, array indices, graceful missing key handling, circular reference detection, typed results with status). It includes comprehensive type hints and detailed docstrings. Minor deduction for incomplete example in the docstring and slight over-engineering in tokenization for the given requirements." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 3.6, "brief_justification": "The response is incomplete: it only provides imports and a partial description but no actual function implementation, failing to meet most requirements like path parsing, circular detection, and error handling." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 6.05, "brief_justification": "The code is well-structured and clear with good type hints and docstrings, but it is incomplete (truncated mid-function), has a bug in the ParseResult constructor call, and does not fully implement circular reference detection across the entire traversal or handle all edge cases for arrays and missing keys as specified." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.45, "brief_justification": "The implementation correctly handles all specified requirements with robust path parsing, error handling, circular reference detection, and comprehensive documentation. Minor issues include incomplete example in the response and visited list not being properly passed recursively (though the provided code uses a single-level approach)." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 8.8, "brief_justification": "The code comprehensively meets all requirements with robust implementation, excellent documentation, type hints, error handling, and clear structure. Minor issues include visited_ids placement potentially missing some cycles and type narrowing, but overall high quality." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 7, "brief_justification": "The implementation mostly works but has flaws: regex tokenization fails for paths with dots inside brackets or complex keys; circular detection is flawed as it uses a shared set across the entire traversal instead of per-path; visited_ids is never cleaned up on backtracking; the function signature claims to return typed result but uses Any and doesn't provide proper error messages as required (silently returns default). Docstring and type hints are good." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 6.4, "brief_justification": "The code is well-structured and documented but incomplete (truncated at the end of the get method). The path parser regex and logic have limitations with complex paths involving multiple dots and brackets. It attempts to meet all requirements but the implementation is partial and the regex approach is brittle for the specified syntax." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 6.75, "brief_justification": "The function mostly meets requirements but has a bug in handling combined paths like 'users[0].name' (the regex only matches tokens containing brackets, so 'users[0]' is treated as a dict key, causing failure). Circular detection is present but uses a flawed per-call stack that doesn't properly track the full path. Good docstring, types, and error handling otherwise." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.6, "brief_justification": "Comprehensive implementation meeting all requirements with excellent documentation and error handling." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 9, "brief_justification": "Highly accurate and complete implementation with clear documentation and deep handling of edge cases." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 8.8, "brief_justification": "Comprehensive and well-structured with robust error handling." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 9.6, "brief_justification": "Comprehensive and correct implementation meeting all requirements with excellent documentation and error handling." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.6, "brief_justification": "Fully meets all requirements with excellent implementation and documentation." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9.2, "brief_justification": "Comprehensive and well-structured with excellent handling of edge cases." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 8.8, "brief_justification": "Comprehensive implementation with type hints and docstrings, handles all requirements including circular references." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9.8, "brief_justification": "Comprehensive and robust implementation meeting all requirements with excellent error handling and documentation." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 8.8, "brief_justification": "The answer provides a well‑typed, documented function that meets all listed requirements, handles errors and circular references, and is ready for practical use." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 3.35, "brief_justification": "The response defines useful helper structures and docstrings, but the main function is incomplete and lacks actual traversal logic, error handling, and circular reference integration, making it non-functional." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 3.75, "brief_justification": "The answer includes good documentation and shows thoughtful design (regex parsing, circular detection), but the implementation is incomplete and would fail at runtime, missing array handling and final return logic, limiting its correctness and practical usefulness." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 8.35, "brief_justification": "The solution implements all requested features with clear docstrings and type hints, handling missing keys, dot/bracket paths, defaults, and basic circular reference detection. Minor edge‑case handling (e.g., complex keys or deep cycle detection) could be improved, but overall it is correct, complete, clear, and highly useful." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.8, "brief_justification": "The response delivers a well‑typed, documented function that meets all listed requirements, includes robust error handling and circular reference detection, and is clearly presented; minor edge‑case handling could be deeper." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 7.8, "brief_justification": "The solution correctly handles missing keys, dot/bracket paths, arrays, and circular references with clear code and type hints, but it lacks explicit error messages and doesn't fully utilize the custom exception, slightly reducing completeness and depth." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 3.6, "brief_justification": "The response starts well with clear structure and type hints, but the implementation is incomplete and missing key logic, making it inaccurate and not directly usable." }, { "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": "The answer provides a well‑structured, type‑annotated function that meets all listed requirements, includes thorough docstrings and examples, and explains key features. Minor quirks in array handling and limited type specificity keep it from a perfect score." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.8, "brief_justification": "The implementation is robust, handles all requirements including circular references and type validation, and provides excellent debugging information through the ParseResult dataclass." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 9.6, "brief_justification": "The implementation is exceptionally robust, handling complex edge cases like multiple array indices (matrix[0][1]) and circular references. It uses a clean, typed result pattern and provides excellent documentation." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 2.85, "brief_justification": "The response is incomplete. It provides an introductory paragraph and the start of an import block, but the actual implementation of the function is missing entirely." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9.35, "brief_justification": "The code is exceptionally well-structured, documented, and professional. It handles complex path parsing (including quoted keys and indices) and implements circular reference detection using object IDs. While the code snippet was slightly truncated at the very end of the return statement, the logic provided is robust and highly usable." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 9.55, "brief_justification": "The implementation is robust and covers all requirements, including circular reference detection and array index parsing. It provides a clean API with type hints and excellent documentation. One minor logic note: the circular reference check uses id(), which is correct for detecting the same object instance in memory during traversal." }, { "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 robust, well-engineered solution that meets all requirements, including complex path parsing and circular reference detection. The code is clean, well-documented, and handles edge cases effectively." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.8, "brief_justification": "The implementation is robust, idiomatic, and covers all requirements including edge cases like circular references and type safety. The use of an iterative approach and regex tokenization is professional." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 9, "brief_justification": "The implementation is high-quality, featuring robust regex path parsing, a clear typed result system, and circular reference detection. However, the code provided is truncated at the end, missing the final traversal logic and return statement for the 'get' method." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9.8, "brief_justification": "The implementation is robust, handles all requirements including circular references and array indexing, and provides excellent error reporting and type hinting." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 8.8, "brief_justification": "Comprehensive solution covering all requirements with excellent code quality. Handles missing keys, path syntax, array indices, typed results with error messages, and circular reference detection. Well-structured with type hints, docstrings, and examples. Slight deduction in depth for not supporting quoted keys mentioned in notes." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 7.6, "brief_justification": "Well-designed implementation with excellent structure, comprehensive docstrings, and proper error handling. However, the response is truncated and missing the actual implementation of the deep_get function body, significantly impacting completeness." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 0.6, "brief_justification": "Response is incomplete - only shows imports and introductory text but no actual function implementation. The code block is truncated." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 5.85, "brief_justification": "Code is well-documented with proper type hints and structured design, but the response is truncated - the get_nested function is cut off mid-implementation (ends with incomplete 'success' line), making it non-functional." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 8.35, "brief_justification": "Comprehensive solution with excellent structure, type hints, and docstrings. Handles most requirements well including missing keys, path syntax, and type validation. Minor limitation: circular reference detection using id() has limited practical use since JSON parsers fail before detection, and path must start with a key (not bracket). Overall production-ready code with clear examples." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.4, "brief_justification": "Comprehensive solution meeting all requirements with proper type hints, docstrings, and error handling. Slight deduction for incomplete example in usage section." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.4, "brief_justification": "Comprehensive implementation covering all 5 requirements with excellent type hints, docstrings, and error handling. Well-structured code with clear sections, proper circular reference detection, and practical examples. Slight deduction on correctness for the regex not fully handling all edge cases in path syntax." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 7.15, "brief_justification": "Well-documented code with good structure, but has a critical bug in circular reference detection (adds to visited_ids without removing on backtrack). Also, requirement #4 for typed results with error messages is not met - JSONPathError is defined but never used, and the function just returns defaults without error context." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9.6, "brief_justification": "Comprehensive implementation covering all 5 requirements with proper type hints, docstrings, circular reference detection, and graceful error handling. Well-structured code with clear examples and test cases." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 8.8, "brief_justification": "Function meets all requirements with robust error handling, type hints, docstrings, and circular reference detection. Minor deduction for depth as type validation is conservative." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 7, "brief_justification": "Code is well-structured with type hints and docstrings, but incomplete (missing final implementation and examples), and circular reference detection is limited to mutable containers only." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 6.85, "brief_justification": "The response provides a good structure and addresses key requirements like type hints and circular reference detection, but the code is incomplete and lacks implementation details for array handling and error messages." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 6.4, "brief_justification": "The response provides a well-structured and clear implementation with good type hints and docstrings, but it is incomplete (missing the rest of the function and the _steps_to_str helper), and the circular reference detection may not handle all cases (e.g., nested dicts referencing each other)." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 8.55, "brief_justification": "Function meets all requirements with robust error handling, type hints, and circular reference detection. Minor issue: circular reference detection may not catch all cases (e.g., nested objects referencing parent), but overall comprehensive and well-structured." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8, "brief_justification": "Function is well-structured with good error handling and type hints, but circular reference detection may not work for all cases and some edge cases like negative indices are not handled." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9, "brief_justification": "Function is factually accurate, covers all requirements thoroughly, well-structured with type hints and docstrings, includes circular reference detection and typed results, highly practical for real-world use." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 8.6, "brief_justification": "Accurate and thorough solution with good structure, type hints, and circular reference handling; minor edge cases like negative indices not addressed." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 7, "brief_justification": "Code is well-structured with type hints and docstrings, but incomplete (missing full implementation and circular reference handling in get method)." } ], "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)" } }