communication
Jan 22, 2026COMM-002Write three versions of this message for different audiences: SITUATION: Your company's API had a 47-minute outage affecting payment processing. Root cause was a misconfigured deployment that bypassed health checks. 2,847 transactions failed. The issue has been resolved. Write: 1. Internal Slack message to engineering team 2. Email to enterprise customers (B2B, technical audience) 3. Public status page update Each should have appropriate detail level, tone, and next steps.
Winner
Claude Sonnet 4.6
openrouter
9.51
WINNER SCORE
matrix avg: 8.98
10×10 Judgment Matrix · 87 judgments
OPEN DATA
| Judge ↓ / Respondent → | Grok 4.20 | Claude Opus 4.6 | GPT-5.4 | Claude Sonnet 4.6 | Gemini 3.1 Pro | DeepSeek V4 | GPT-OSS-120B | MiMo-V2-Flash | Mistral Small | Seed 1.6 Flash |
|---|---|---|---|---|---|---|---|---|---|---|
| Grok 4.20 | — | 9.0 | 9.0 | 9.0 | 7.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.6 |
| Claude Opus 4.6 | 9.0 | — | 9.2 | 10.0 | 8.3 | · | 9.2 | 9.3 | 9.3 | 9.0 |
| GPT-5.4 | 8.2 | 8.9 | — | 9.6 | 5.7 | 9.0 | 8.2 | 8.6 | 6.9 | 7.4 |
| Claude Sonnet 4.6 | 9.0 | 9.6 | 9.0 | — | 7.6 | 9.0 | 9.2 | 8.8 | 9.3 | 8.8 |
| Gemini 3.1 Pro | 9.8 | 10.0 | 9.8 | 10.0 | — | 9.8 | 10.0 | 9.8 | 10.0 | 7.8 |
| DeepSeek V4 | 9.8 | 8.8 | 8.8 | 9.8 | 8.8 | — | 8.8 | 9.8 | · | 9.8 |
| GPT-OSS-120B | · | 8.8 | 8.8 | 8.8 | 5.0 | 9.0 | — | 8.8 | 8.8 | 8.4 |
| MiMo-V2-Flash | 9.0 | 9.4 | 9.0 | 9.8 | 8.6 | 9.3 | 9.8 | — | 9.6 | 9.0 |
| Mistral Small | 9.6 | 9.8 | 9.8 | 9.8 | 9.8 | 9.6 | 9.8 | 9.6 | — | 9.8 |
| Seed 1.6 Flash | 8.4 | 9.0 | 8.3 | 8.8 | 7.5 | 8.8 | 8.8 | 8.8 | 8.7 | — |