# The Multivac — Evaluation Report

**Evaluation ID:** EVAL-20260402-215407
**Date:** Jan 22, 2026
**Category:** communication
**Question ID:** COMM-002

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## Question

Write 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.

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## Winner

**Claude Sonnet 4.6** (openrouter)
- Winner Score: 9.51
- Matrix Average: 8.98
- Total Judgments: 87

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## Rankings

| Rank | Model | Provider | Avg Score | Judgments |
|------|-------|----------|-----------|----------|
| 1 | Claude Sonnet 4.6 | openrouter | 9.51 | 9 |
| 2 | Claude Opus 4.6 | openrouter | 9.26 | 9 |
| 3 | GPT-OSS-120B | OpenAI | 9.17 | 9 |
| 4 | DeepSeek V4 | openrouter | 9.16 | 8 |
| 5 | MiMo-V2-Flash | Xiaomi | 9.14 | 9 |
| 6 | Grok 4.20 | openrouter | 9.11 | 8 |
| 7 | GPT-5.4 | openrouter | 9.07 | 9 |
| 8 | Mistral Small Creative | Mistral | 8.93 | 8 |
| 9 | Seed 1.6 Flash | openrouter | 8.74 | 9 |
| 10 | Gemini 3.1 Pro | openrouter | 7.68 | 9 |

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## 10×10 Judgment Matrix

Rows = Judge, Columns = Respondent. Self-judgments excluded (—).

| Judge ↓ / Resp → | Grok 4.20 | Claude Opus | GPT-5.4 | Claude Sonnet | 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 | 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 | 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 | — |

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## Methodology

- **10×10 Blind Peer Matrix:** All models answer the same question, then all models judge all responses.
- **5 Criteria:** Correctness, completeness, clarity, depth, usefulness (each scored 1–10).
- **Self-judgments excluded:** Models do not judge their own responses.
- **Weighted Score:** Composite of all 5 criteria.

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## Citation

The Multivac (2026). Blind Peer Evaluation: COMM-002. app.themultivac.com

## License

Open data. Free to use, share, and build upon. Please cite The Multivac when using this data.

Download raw JSON: https://app.themultivac.com/api/evaluations/EVAL-20260402-215407/results
Full dataset: https://app.themultivac.com/dashboard/export