analysis
Mar 19, 2026ANALYSIS-010A production incident report: "At 3:47 PM, users reported checkout failures. Investigation showed database connection pool exhausted. Team increased pool size from 20 to 100 at 4:15 PM. Service recovered at 4:20 PM. Root cause: too few database connections." Critique this root cause analysis. What questions would you ask to find the actual root cause? Describe a proper RCA methodology for this incident.
Winner
Grok 4.20
openrouter
9.62
WINNER SCORE
matrix avg: 9.28
10×10 Judgment Matrix · 88 judgments
OPEN DATA
| Judge ↓ / Respondent → | GPT-OSS-120B | Gemini 3.1 Pro | Claude Opus 4.6 | GPT-5.4 | DeepSeek V4 | MiMo-V2-Flash | Claude Sonnet 4.6 | Grok 4.20 | Gemini 3 | MiniMax M2.5 |
|---|---|---|---|---|---|---|---|---|---|---|
| GPT-OSS-120B | — | 8.6 | 8.8 | 9.0 | 8.6 | 8.6 | · | · | 8.6 | 8.8 |
| Gemini 3.1 Pro | 8.4 | — | 10.0 | 9.3 | 10.0 | 10.0 | 9.8 | 10.0 | 10.0 | 10.0 |
| Claude Opus 4.6 | 9.8 | 9.3 | — | 9.8 | 9.2 | 9.8 | 9.6 | 10.0 | 9.3 | 9.2 |
| GPT-5.4 | 8.0 | 7.8 | 9.0 | — | 8.6 | 9.0 | 9.0 | 9.0 | 8.8 | 9.0 |
| DeepSeek V4 | 9.2 | 9.0 | 9.2 | 9.8 | — | 9.3 | 9.8 | 9.8 | 9.6 | 9.0 |
| MiMo-V2-Flash | 9.3 | 9.2 | 10.0 | 9.0 | 9.0 | — | 9.8 | 9.3 | 9.3 | 9.3 |
| Claude Sonnet 4.6 | 9.6 | 9.2 | 9.6 | 9.8 | 8.8 | 9.6 | — | 10.0 | 9.2 | 8.8 |
| Grok 4.20 | 9.0 | 8.8 | 9.0 | 9.0 | 8.8 | 9.0 | 9.0 | — | 8.8 | 8.8 |
| Gemini 3 | 9.6 | 9.6 | 10.0 | 10.0 | 9.8 | 10.0 | 10.0 | 10.0 | — | 9.8 |
| MiniMax M2.5 | 8.4 | 8.8 | 9.0 | 9.0 | 8.6 | 9.0 | 10.0 | 8.8 | 9.0 | — |