{ "evaluation_id": "EVAL-20260402-191413", "question_id": "ANALYSIS-008", "question_text": "Review this system architecture and identify potential issues:\n\n```\nArchitecture: E-commerce Platform\n\nFrontend: React SPA → CDN (CloudFront)\n ↓\nAPI Gateway → Lambda Functions (Node.js)\n ↓\n├── User Service → MongoDB (single replica)\n├── Product Service → PostgreSQL (single instance)\n├── Order Service → MySQL (single instance)\n├── Payment Service → External API (Stripe)\n└── Search Service → Elasticsearch (single node)\n ↓\nAll services share one AWS account\nSecrets stored in environment variables\nLogging: console.log to CloudWatch\nNo rate limiting\nCORS: Access-Control-Allow-Origin: *\n```\n\nWhat are the risks? Prioritize fixes by impact and effort.", "category": "analysis", "timestamp": "2026-03-05T00:00:00.000Z", "display_date": "Mar 05, 2026", "winner": { "name": "MiMo-V2-Flash", "provider": "Xiaomi", "score": 9.07 }, "avg_score": 8.656, "matrix_size": 89, "models_used": [ { "id": "claude_opus_46", "name": "Claude Opus 4.6", "provider": "openrouter" }, { "id": "gpt_5_4", "name": "GPT-5.4", "provider": "openrouter" }, { "id": "deepseek_v4", "name": "DeepSeek V4", "provider": "openrouter" }, { "id": "mimo_v2_flash", "name": "MiMo-V2-Flash", "provider": "Xiaomi" }, { "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_3_flash", "name": "Gemini 3 Flash Preview", "provider": "Google" }, { "id": "minimax_m25", "name": "MiniMax M2.5", "provider": "openrouter" }, { "id": "gemini_31_pro", "name": "Gemini 3.1 Pro", "provider": "openrouter" } ], "rankings": { "mimo_v2_flash": { "display_name": "MiMo-V2-Flash", "provider": "Xiaomi", "average_score": 9.07, "score_count": 9, "min_score": 8.55, "max_score": 9.8, "rank": 1 }, "gpt_oss_120b": { "display_name": "GPT-OSS-120B", "provider": "OpenAI", "average_score": 9.06, "score_count": 9, "min_score": 7.85, "max_score": 9.8, "rank": 2 }, "gpt_5_4": { "display_name": "GPT-5.4", "provider": "openrouter", "average_score": 9.04, "score_count": 9, "min_score": 8.6, "max_score": 9.8, "rank": 3 }, "grok_420": { "display_name": "Grok 4.20", "provider": "openrouter", "average_score": 9, "score_count": 9, "min_score": 8.35, "max_score": 9.8, "rank": 4 }, "minimax_m25": { "display_name": "MiniMax M2.5", "provider": "openrouter", "average_score": 8.91, "score_count": 9, "min_score": 7.95, "max_score": 9.8, "rank": 5 }, "gemini_3_flash": { "display_name": "Gemini 3 Flash Preview", "provider": "Google", "average_score": 8.78, "score_count": 9, "min_score": 8.15, "max_score": 9.4, "rank": 6 }, "deepseek_v4": { "display_name": "DeepSeek V4", "provider": "openrouter", "average_score": 8.54, "score_count": 9, "min_score": 6.95, "max_score": 9.4, "rank": 7 }, "claude_sonnet_46": { "display_name": "Claude Sonnet 4.6", "provider": "openrouter", "average_score": 8.34, "score_count": 9, "min_score": 6.6, "max_score": 9.6, "rank": 8 }, "gemini_31_pro": { "display_name": "Gemini 3.1 Pro", "provider": "openrouter", "average_score": 8.03, "score_count": 8, "min_score": 5.4, "max_score": 9.25, "rank": 9 }, "claude_opus_46": { "display_name": "Claude Opus 4.6", "provider": "openrouter", "average_score": 7.79, "score_count": 9, "min_score": 5.85, "max_score": 9.4, "rank": 10 } }, "judgments": [ { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 6.25, "brief_justification": "" }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.05, "brief_justification": "The response is highly accurate, detailed, and actionable, correctly identifying all architectural risks and providing a well-structured prioritization. However, it is slightly truncated at the very end." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 9.35, "brief_justification": "The response accurately identifies all architectural risks, structures them clearly by impact and effort, and provides highly actionable solutions. Catching implicit issues like Lambda DB connection exhaustion demonstrates excellent depth." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9.8, "brief_justification": "The response accurately identifies all architectural flaws, provides excellent AWS-specific recommendations, structures the answer clearly by priority, and offers a highly actionable implementation roadmap with effort estimates." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 7.85, "brief_justification": "The technical analysis is highly accurate, deep, and actionable with excellent formatting and code examples. However, the response cuts off abruptly at the end, significantly impacting its completeness." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 9.6, "brief_justification": "The response accurately identifies all major architectural flaws, provides clear explanations of the risks, and offers a highly actionable, prioritized remediation plan." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.4, "brief_justification": "The response provides an excellent, highly actionable analysis of the architecture, correctly identifying risks and categorizing them by impact and effort with deep AWS-specific insights. The text appears slightly cut off at the very end, but the core content is outstanding." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9.4, "brief_justification": "The response is highly accurate, well-structured, and provides a highly actionable, prioritized roadmap. It correctly identifies almost all risks and offers excellent practical solutions, though it misses addressing the single shared AWS account." }, { "judge_key": "gemini_31_pro", "judge_name": "Gemini 3.1 Pro", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 9.55, "brief_justification": "Excellent analysis of architectural risks with highly actionable, prioritized recommendations. Minor technical nuance missed regarding CORS and CSRF mechanics, but overall outstanding." }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 7.65, "brief_justification": "The response correctly identifies the major risks (CORS wildcard, secrets in env vars, single-instance databases, no rate limiting, connection exhaustion, polyglot persistence). The analysis is well-structured with clear categorization. However, the response is clearly truncated mid-sentence in the remediation plan (Phase 1 is incomplete, and Phases 2+ are missing entirely), which significantly hurts completeness and usefulness. The CORS/CSRF connection is slightly overstated (CORS doesn't direc" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.55, "brief_justification": "Exceptionally thorough and well-structured review. Correctly identifies all major architectural risks including SPOFs, secrets management, rate limiting, CORS, single account, observability, polyglot persistence, resilience patterns, and payment concerns. The prioritization by impact and effort is practical and actionable with specific AWS service recommendations. The tiered priority system (quick wins, reliability, structural) is excellent for real-world implementation. Minor deduction on corre" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.15, "brief_justification": "The response correctly identifies the major architectural risks and provides actionable fixes. The prioritization by impact and effort is well-structured and practical. Minor issues: CORS * doesn't directly enable CSRF (that's more about cookie/token handling), and the claim about 'no database backups' is inferred rather than explicitly stated in the architecture. The response could go deeper on some points—e.g., Lambda connection pooling issues with relational DBs (connection exhaustion) deserv" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9.15, "brief_justification": "Excellent, well-structured review that correctly identifies all major issues in the architecture. The prioritization by impact/effort is sound, the roadmap is practical, and the quick wins section adds real actionability. Minor deductions: the CORS/CSRF conflation is slightly imprecise (CORS misconfig enables cross-origin data theft more than CSRF per se), and the review could have gone deeper on architectural concerns like polyglot persistence complexity, cold start latency, or Lambda concurren" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 8.6, "brief_justification": "The response is technically accurate, well-structured with clear priority tiers, and provides concrete, actionable code examples for each fix. It correctly identifies the most critical issues (SPOFs, secrets management, no rate limiting, wildcard CORS, single AWS account). The depth is excellent—each issue includes risk explanation, blast radius analysis, and production-ready fix code. However, the response appears truncated (cuts off mid-table at issue #5), missing coverage of logging/observabi" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 8.95, "brief_justification": "The response is highly accurate, well-structured, and actionable. It correctly identifies all major risks (SPOFs, secrets management, rate limiting, CORS, single account, logging, polyglot persistence). The prioritization by impact and effort is sensible and practical. The quick wins table and 2-week action plan add excellent practical value. Minor gaps: doesn't mention lack of authentication/authorization mechanisms, no discussion of payment service failure handling (idempotency, retry logic), " }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.35, "brief_justification": "The response is highly accurate, identifying all major architectural risks (single-node databases, poor secret management, no rate limiting, wildcard CORS, lack of observability, shared account blast radius, no WAF, synchronous payment flow, etc.). The prioritization matrix is exceptionally well-structured by impact vs. effort, and the phased remediation plan (quick-wins, mid-term, long-term) is immediately actionable. The clarity of presentation with tables and grouped timelines is excellent. M" }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 8.55, "brief_justification": "The response is well-structured, clearly prioritized, and covers the major issues. Correctness is strong but has a minor inaccuracy: CORS * primarily enables cross-origin reads, not CSRF (CSRF uses simple requests that bypass CORS). The response could have also mentioned the shared AWS account risk (no blast radius isolation, no least-privilege between services), the lack of a circuit breaker for the external Stripe dependency, Lambda cold starts, and the absence of authentication/authorization " }, { "judge_key": "claude_opus_46", "judge_name": "Claude Opus 4.6", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 8.15, "brief_justification": "The response is well-structured, visually clear, and covers most major architectural risks. Correctness is strong but has minor issues: CORS wildcard doesn't directly enable CSRF (cookies aren't sent cross-origin by default without credentials mode), and the claim about auth being 'likely missing' is speculative. The polyglot persistence issue (3 different databases for no apparent reason) was missed, as were concerns about Lambda cold starts, distributed transaction management across services, " }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 5.4, "brief_justification": "Identifies several real risks well, especially SPOFs, secrets handling, lack of rate limiting, and observability gaps. However, it is incomplete because the remediation plan is cut off mid-sentence, and it overstates some points: CORS '*' is not by itself a 'massive security vulnerability' or CSRF cause without credentialed cross-origin requests/auth context, and single-instance DBs imply high availability risk more than inherently 'highly probable' data loss if backups exist. Overall solid but " }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 5.85, "brief_justification": "Well-structured and detailed on a few issues, but incomplete and partially inaccurate. It overstates CORS as enabling CSRF/account takeover by itself, misses major architecture risks like single points of failure in all databases/search, shared AWS account blast radius, weak logging/observability, and lacks a balanced impact/effort prioritization across the full architecture. The response is also truncated, reducing usefulness." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 6.95, "brief_justification": "Clear and reasonably prioritized, covering major risks like SPOFs, secrets, rate limiting, and weak logging. However, it includes some questionable claims (e.g., CORS '*' causing CSRF, direct DB access from Lambdas as inherently bad, monolithic-like design) and misses several important issues such as authn/authz, IAM least privilege, network isolation/VPC design, encryption, audit logging, and resilience patterns for Stripe/external dependencies." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 8.55, "brief_justification": "Strong, well-structured review that identifies major availability, security, and operational risks and prioritizes fixes pragmatically. Minor issues include somewhat overstating CORS as a direct CSRF risk and a few speculative additions beyond the given architecture." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 6.6, "brief_justification": "Identifies several real high-impact risks and gives actionable fixes, but the response is truncated and misses important issues like weak observability, backup/DR, least-privilege IAM/network isolation, and some CORS/CSRF nuances are overstated." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 8.35, "brief_justification": "Well-structured and practical, correctly identifies major availability, security, and observability risks with sensible prioritization. Minor issues include slightly overstating CORS as a CSRF risk and not covering some additional concerns like auth, backups, network isolation, and dependency resilience." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 7.85, "brief_justification": "Accurately identifies many major risks and offers a sensible impact/effort prioritization. Clear and structured, but some claims are speculative or slightly imprecise (e.g., CORS/CSRF, default VPC assumptions, WAF as OWASP blanket protection), and the answer is truncated at the end, reducing completeness and usefulness." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 8.15, "brief_justification": "Clear, well-prioritized review covering major SPOFs, secrets, CORS, rate limiting, backups, and observability. Minor issues: overstates env-var insecurity, conflates CORS with CSRF risk, and misses some architecture risks like single AWS account blast radius, auth/WAF concerns, and Lambda/API Gateway operational limits." }, { "judge_key": "gpt_5_4", "judge_name": "GPT-5.4", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 7.95, "brief_justification": "Well-structured and mostly accurate, covering major availability, security, and operational risks with a useful prioritization. Some claims are overstated or imprecise, especially around CORS implying authenticated cross-site requests/CSRF, Multi-AZ read replica wording, and assuming missing auth from the diagram." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 9, "brief_justification": "Detailed, accurate, and actionable analysis with clear prioritization." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 8.8, "brief_justification": "Highly accurate and detailed with actionable fixes." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 8.8, "brief_justification": "Detailed, accurate, and actionable analysis with clear prioritization." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9, "brief_justification": "Comprehensive and well-structured review with actionable fixes." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9, "brief_justification": "Comprehensive and detailed analysis with actionable fixes." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 9.4, "brief_justification": "Comprehensive and accurate risk assessment with actionable fixes." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 8.8, "brief_justification": "Comprehensive and well-structured with actionable insights." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9.4, "brief_justification": "Comprehensive and accurate risk assessment with actionable prioritization." }, { "judge_key": "deepseek_v4", "judge_name": "DeepSeek V4", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 9.6, "brief_justification": "Comprehensive and accurate risk assessment with actionable fixes." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 8.4, "brief_justification": "Excellent identification of critical risks (SPOFs, security, connection pooling). Completeness is slightly reduced as the 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": 8.8, "brief_justification": "Excellent identification of critical risks with concrete code examples. Prioritization is logical and actionable. Missing a brief mention of database HA risks." }, { "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 analysis covering all major risks with clear prioritization and actionable advice." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 9, "brief_justification": "Accurate, thorough, well-structured, and actionable with good prioritization." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9, "brief_justification": "Accurate identification of critical risks with prioritized, actionable fixes; clear structure and depth; minor omission of full risk matrix completion." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 8.8, "brief_justification": "Excellent analysis covering security, reliability, and operational concerns. Prioritization is logical and actionable. Minor deduction in depth for not mentioning specific IaC security best practices." }, { "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 risk identification, excellent prioritization matrix, and actionable quick-win list." }, { "judge_key": "mimo_v2_flash", "judge_name": "MiMo-V2-Flash", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9, "brief_justification": "Excellent analysis covering security, availability, and operations. Prioritization is logical and actionable." }, { "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 comprehensive analysis with clear prioritization matrix and actionable fixes." }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 8.25, "brief_justification": "The response is technically accurate and well-structured, correctly identifying critical issues like CORS wildcards, single-instance SPOFs, Lambda connection exhaustion, and secrets management. The categorization by risk type and the phased remediation plan add practical value. The main weakness is that the response appears truncated mid-sentence in Phase 1, cutting off the full remediation plan. Despite this, the issues identified are prioritized well and the depth of explanation (e.g., dual-wr" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 7.8, "brief_justification": "The response provides excellent depth and actionable fixes for the issues it covers, with well-structured code examples and clear risk explanations. However, it appears to be cut off mid-response, missing coverage of several critical issues from the architecture: single-replica/single-instance databases (massive availability risk), single AWS account for all services (blast radius concern), and inadequate logging strategy. The CORS risk explanation contains a minor inaccuracy—wildcard CORS doesn" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 9.35, "brief_justification": "Exceptionally thorough review covering all major risk categories with accurate technical assessments. The prioritization framework (quick wins → reliability → structural) is practical and actionable. Correctly identifies critical issues like SPOF databases, secrets management, rate limiting, and payment idempotency. Minor gap: effort estimate for account separation was cut off, but overall this is a high-quality, production-ready architectural review with concrete remediation steps for each issu" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.6, "brief_justification": "Accurate identification of all major risks with correct technical solutions. Well-structured with clear prioritization matrix. Good depth on security issues (CORS, secrets, rate limiting) and availability concerns (SPOFs). Minor gaps: doesn't mention Lambda connection pool exhaustion with RDS (a critical Lambda+DB issue), missing authentication/authorization concerns, and no mention of payment service security requirements (PCI-DSS). The quick wins summary adds practical value." }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 9.15, "brief_justification": "Excellent structured review covering all major issues with accurate risk assessments. The prioritization by impact/effort is well-reasoned, the phased roadmap is practical, and the quick wins section adds immediate actionability. Minor gaps: doesn't mention Lambda cold starts, missing discussion of service mesh/inter-service authentication, or the risks of three different database technologies (operational complexity). CORS risk description slightly conflates CSRF with CORS. Overall highly usefu" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 9.15, "brief_justification": "Excellent response that correctly identifies all major risks with accurate technical details. Well-structured with clear prioritization, actionable fixes, and a practical timeline. The quick-wins table and 2-week action plan add strong practical value. Minor gap: doesn't mention Lambda concurrency limits, cold starts, or the lack of authentication/authorization mechanisms explicitly, and the payment service has no specific security review noted beyond the general secrets issue. Overall a very th" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 9.35, "brief_justification": "Excellent structured analysis covering all major risk areas with accurate technical details. The prioritization matrix is practical and actionable, with clear quick-win vs. long-term categorization. Minor gap: doesn't explicitly address data consistency risks across three different databases (MongoDB/PostgreSQL/MySQL) for distributed transactions, particularly for order-payment flows. Otherwise comprehensive, well-organized, and highly actionable for engineering teams." }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 9.15, "brief_justification": "Excellent response that correctly identifies all major issues including SPOFs, security vulnerabilities, and operational concerns. Well-structured with clear prioritization phases and a useful summary table. The phased approach with impact/effort analysis is highly actionable. Minor gaps include no mention of the single AWS account risk (blast radius, no environment separation), Lambda cold starts, payment service resilience/PCI compliance considerations, and lack of service mesh or inter-servic" }, { "judge_key": "claude_sonnet_46", "judge_name": "Claude Sonnet 4.6", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 8.6, "brief_justification": "Thorough, well-structured review that correctly identifies critical issues like single-node databases, secrets management, CORS, and rate limiting. The prioritization matrix and roadmap add strong practical value. Minor gaps include no mention of VPC/network isolation for Lambda functions, missing discussion of data consistency issues across three different databases (polyglot persistence complexity), and the authentication section is speculative. The truncated long-term section is a minor flaw." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 8.6, "brief_justification": "The response accurately identifies all major risks in the architecture with strong prioritization. It is clearly structured and provides actionable fixes, though the remediation plan is slightly truncated." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 8.6, "brief_justification": "The response accurately identifies major risks with excellent detail, code examples, and prioritization. It covers the most critical issues thoroughly but omits some architecture concerns like single DB instances and shared AWS account." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 8.6, "brief_justification": "The response systematically identifies all major risks in the architecture with accurate technical details, prioritizes them effectively by impact, and provides actionable fixes grouped by effort. It is well-structured, comprehensive for the given diagram, and highly practical for an e-commerce platform." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.6, "brief_justification": "The response accurately identifies all major risks in the architecture with clear prioritization by impact/effort. It provides practical fixes and a useful summary table. Minor deduction for completeness as it omits a few issues like lack of authentication/authorization details and potential Lambda permission problems, but overall excellent." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 8.8, "brief_justification": "The response accurately identifies all major risks from the architecture with clear prioritization by impact/effort, structured recommendations, and a practical roadmap. It provides comprehensive coverage with good depth on fixes while remaining actionable and well-organized." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 8.6, "brief_justification": "The response accurately identifies all major risks in the architecture with clear prioritization, practical code examples, and AWS-specific fixes. It covers reliability, security, and observability comprehensively while maintaining excellent structure and actionability. Minor deduction for not addressing shared account isolation in detail as the response was cut off." }, { "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 response accurately identifies all major risks in the architecture with excellent structure, clear prioritization by impact/effort, and actionable quick-win recommendations. It provides comprehensive coverage while maintaining high readability and practical value." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 8.6, "brief_justification": "The response accurately identifies all major risks in the architecture with strong prioritization by impact/effort. It provides clear, actionable fixes and a useful summary table, though it could briefly mention shared AWS account risks for slightly more completeness." }, { "judge_key": "grok_420", "judge_name": "Grok 4.20", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 8.6, "brief_justification": "The response accurately identifies all major risks in the architecture with strong prioritization by impact. It provides clear explanations, concrete fixes, and code examples. Minor deduction for assuming missing auth without diagram evidence and slight incompleteness in the final monitoring bullet." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 7.7, "brief_justification": "Accurately spots major security and reliability flaws with clear, well-structured explanations and good depth, but the answer cuts off before fully detailing remediation steps and omits some other important concerns, reducing completeness and overall usefulness." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 7.95, "brief_justification": "Identifies key risks accurately and offers detailed, actionable fixes, but omits several important concerns (e.g., single‑node DB failures, lack of VPC isolation, backup/restore, IAM least‑privilege, monitoring), limiting overall completeness." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 8.6, "brief_justification": "Accurate identification of risks, comprehensive coverage with clear structure, deep technical insight, and actionable prioritized fixes." }, { "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 identification of key risks with clear, actionable prioritization; well‑structured and useful, though could include more on IAM, encryption, and network isolation." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 8.8, "brief_justification": "Accurate identification of risks, thorough coverage with clear structure, insightful prioritization and actionable roadmap, highly useful for implementation." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 7.85, "brief_justification": "Accurate identification of major risks with detailed remediation and impact/effort assessment, but the answer is incomplete and omits several other concerns (monitoring, IAM isolation, backups, etc.), reducing overall completeness." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 8.6, "brief_justification": "Accurate risk identification and solid mitigation steps; covers most major concerns with clear structure and actionable guidance, though a few additional security aspects could be mentioned." }, { "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 identification of risks, thorough coverage with actionable prioritized fixes, clear structure, insightful recommendations, and high practical value." }, { "judge_key": "gpt_oss_120b", "judge_name": "GPT-OSS-120B", "respondent_key": "minimax_m25", "respondent_name": "MiniMax M2.5", "weighted_score": 8.6, "brief_justification": "Accurate risk identification, thorough coverage of key concerns, well‑structured with clear tables and code, offers deep analysis and concrete remediation steps, and provides a practical prioritized roadmap." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "gemini_31_pro", "respondent_name": "Gemini 3.1 Pro", "weighted_score": 9.25, "brief_justification": "The response identifies all critical architectural flaws, including the subtle but vital Lambda-to-RDBMS connection exhaustion issue. It provides a structured, prioritized plan, though the response was cut off at the very end." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 9.4, "brief_justification": "The response is exceptionally high quality. It identifies the most critical security risks (CORS, Secrets, Rate Limiting) and provides production-ready code examples for fixes. It uses industry best practices like AWS WAF and Secrets Manager caching. It is slightly incomplete as it was cut off before addressing the database single-instance risks mentioned in the prompt, but the depth of the provided sections is outstanding." }, { "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 response is exceptionally thorough, identifying all major architectural flaws including SPOFs, security vulnerabilities, and operational weaknesses. The prioritization of fixes by impact and effort is logical and highly actionable." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 9.4, "brief_justification": "The response accurately identifies all major architectural flaws, provides clear remediation steps, and correctly prioritizes them based on impact and effort. It specifically addresses the security, availability, and scalability issues inherent in the provided prompt." }, { "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 response is exceptionally thorough, identifying all major architectural flaws including single points of failure, security vulnerabilities, and operational weaknesses. It provides a clear, prioritized roadmap with effort estimates, making it highly actionable." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 9.6, "brief_justification": "The response is exceptionally high quality. It correctly identifies all major architectural flaws, provides concrete code examples for fixes, and prioritizes them by impact and effort as requested. It only misses the 'Logging' issue in the detailed breakdown, though it covers the most critical security and reliability risks." }, { "judge_key": "gemini_3_flash", "judge_name": "Gemini 3 Flash Preview", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 9.8, "brief_justification": "The response is exceptionally thorough, accurately identifying all critical architectural flaws including SPOFs, security vulnerabilities (CORS, secrets), and operational risks. The prioritization is logical, and the 'Quick Wins' table provides high practical value." }, { "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 response is exceptionally thorough, identifying all major architectural flaws including single points of failure, security vulnerabilities (CORS, secrets, IAM), and operational weaknesses. The prioritization matrix is highly practical and well-structured." }, { "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 exceptionally thorough, accurately identifying all architectural flaws mentioned in the prompt. It provides concrete code/config examples for fixes and includes a highly useful prioritization matrix." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "claude_opus_46", "respondent_name": "Claude Opus 4.6", "weighted_score": 6.65, "brief_justification": "Identifies three critical real risks (CORS, secrets, rate limiting) with accurate technical details and actionable code fixes. Well-structured with good explanations. However, response is incomplete (cuts off mid-code) and misses key architectural issues: single-replica databases with no HA, single-node Elasticsearch, missing backup strategies, and logging improvements. Prioritization is implicit rather than explicit effort/impact matrix." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gpt_5_4", "respondent_name": "GPT-5.4", "weighted_score": 8.6, "brief_justification": "Accurate identification of real architectural risks with thorough explanations. Well-structured with clear prioritization by impact and effort. Provides actionable recommendations covering security, reliability, and observability. Minor gaps on encryption and VPC but overall comprehensive and practical." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "deepseek_v4", "respondent_name": "DeepSeek V4", "weighted_score": 8.2, "brief_justification": "Accurate identification of real architectural risks with appropriate prioritization. Well-organized with clear sections and actionable fixes. Slightly incomplete (missing data consistency, circuit breakers) but covers most critical issues effectively. High practical value with clear quick wins and long-term recommendations." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "mimo_v2_flash", "respondent_name": "MiMo-V2-Flash", "weighted_score": 8.55, "brief_justification": "Comprehensive review covering all major architectural issues with clear prioritization, risk assessments, effort estimates, and an actionable phased roadmap. Well-structured with specific technical recommendations." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "claude_sonnet_46", "respondent_name": "Claude Sonnet 4.6", "weighted_score": 8, "brief_justification": "Comprehensive review covering critical issues (SPOF, secrets, rate limiting, CORS) with actionable fixes and code examples. Well-structured with clear prioritization. Slightly incomplete (section 5 ends abruptly) and misses some topics like logging improvements and monitoring." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "grok_420", "respondent_name": "Grok 4.20", "weighted_score": 8.35, "brief_justification": "Accurately identifies critical architectural risks including single points of failure, security vulnerabilities, and missing protections. Well-organized with clear prioritization, specific AWS solutions, and actionable timeline. Slight deduction for depth as it could cover more alternatives and implementation details." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gpt_oss_120b", "respondent_name": "GPT-OSS-120B", "weighted_score": 8.8, "brief_justification": "Comprehensive risk identification with accurate technical details. Well-structured prioritization matrix with clear impact/effort groupings. Actionable recommendations organized by timeline. Slight扣分 for depth as some solutions could be more technically specific." }, { "judge_key": "minimax_m25", "judge_name": "MiniMax M2.5", "respondent_key": "gemini_3_flash", "respondent_name": "Gemini 3 Flash Preview", "weighted_score": 8.2, "brief_justification": "Accurately identifies critical security and availability issues with sound prioritization. Well-organized with phased approach and summary table. Minor gaps include missing discussion of caching, message queues, and authentication. Practical and actionable recommendations." } ], "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)" } }