# The Multivac — Evaluation Report

**Evaluation ID:** EVAL-20260402-193917
**Date:** Apr 02, 2026
**Category:** analysis
**Question ID:** ANALYSIS-015

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## Question

Analyze these two social media posts about the same event and determine which is likely disinformation:

Post A: 'BREAKING: Major tech company laying off 10,000. Stock crashes 15%. Insider sources say CEO plans to flee the country. #corruption #scandal'

Post B: 'TechCorp announced workforce reduction of 10,000 positions as part of restructuring. Stock down 3% in after-hours. Company cites pivot to AI development.'

For each post: (1) identify claims that can be verified, (2) identify emotional manipulation techniques, (3) assess source credibility signals. Then: what additional information would resolve the ambiguity?

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## Winner

**Claude Opus 4.6** (openrouter)
- Winner Score: 9.32
- Matrix Average: 8.87
- Total Judgments: 83

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## Rankings

| Rank | Model | Provider | Avg Score | Judgments |
|------|-------|----------|-----------|----------|
| 1 | Claude Opus 4.6 | openrouter | 9.32 | 9 |
| 2 | Grok 4.20 | openrouter | 9.24 | 9 |
| 3 | GPT-5.4 | openrouter | 9.22 | 9 |
| 4 | MiMo-V2-Flash | Xiaomi | 9.18 | 8 |
| 5 | MiniMax M2.5 | openrouter | 9.09 | 9 |
| 6 | Claude Sonnet 4.6 | openrouter | 9.05 | 9 |
| 7 | DeepSeek V4 | openrouter | 9.03 | 9 |
| 8 | Gemini 3 Flash Preview | Google | 9.02 | 9 |
| 9 | Gemini 3.1 Pro | openrouter | 8.59 | 7 |
| 10 | GPT-OSS-120B | OpenAI | 6.96 | 5 |

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## 10×10 Judgment Matrix

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

| Judge ↓ / Resp → | Gemini 3.1 Pro | Claude Opus | GPT-5.4 | DeepSeek V4 | MiMo-V2-Flash | Claude Sonnet | Grok 4.20 | GPT-OSS-120B | Gemini 3 | MiniMax M2.5 |
|---|---|---|---|---|---|---|---|---|---|---|
| Gemini 3.1 Pro | — | 10.0 | 10.0 | 9.8 | 10.0 | 10.0 | 9.8 | · | 10.0 | 9.8 |
| Claude Opus | 9.0 | — | 9.4 | 9.0 | 9.4 | 9.2 | 9.4 | 0.9 | 9.2 | 9.0 |
| GPT-5.4 | 7.5 | 9.0 | — | 9.0 | 8.6 | 8.8 | 9.8 | · | 8.8 | 9.0 |
| DeepSeek V4 | 8.8 | 9.4 | 8.8 | — | · | 8.8 | 8.8 | 8.6 | 9.6 | 8.8 |
| MiMo-V2-Flash | 9.0 | 9.2 | 9.2 | 9.0 | — | 9.0 | 8.8 | 8.8 | 8.6 | 9.0 |
| Claude Sonnet | · | 9.2 | 9.2 | 8.8 | 9.2 | — | 9.6 | · | 8.6 | 9.0 |
| Grok 4.20 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | — | 8.3 | 8.8 | 8.8 |
| GPT-OSS-120B | 8.3 | 8.8 | 8.8 | 8.7 | 8.7 | 8.4 | 8.3 | — | 8.8 | 8.7 |
| Gemini 3 | · | 10.0 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | · | — | 9.8 |
| MiniMax M2.5 | 8.8 | 9.4 | 9.0 | 8.4 | 9.0 | 8.6 | 9.0 | 8.3 | 8.8 | — |

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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: ANALYSIS-015. 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-20260402-193917/results
Full dataset: https://app.themultivac.com/dashboard/export