# The Multivac — Evaluation Report

**Evaluation ID:** EVAL-20260207-141157
**Date:** Feb 10, 2026
**Category:** code
**Question ID:** CODE-005

---

## Question

Convert this Python code to idiomatic Rust. The code must compile, handle errors properly, and follow Rust best practices.

```python
from dataclasses import dataclass
from typing import Optional, List
from datetime import datetime

@dataclass
class Task:
    id: int
    title: str
    completed: bool
    due_date: Optional[datetime]
    tags: List[str]

class TaskManager:
    def __init__(self):
        self.tasks = []
        self.next_id = 1
    
    def add_task(self, title: str, due_date: Optional[datetime] = None, tags: List[str] = None) -> Task:
        task = Task(
            id=self.next_id,
            title=title,
            completed=False,
            due_date=due_date,
            tags=tags or []
        )
        self.tasks.append(task)
        self.next_id += 1
        return task
    
    def complete_task(self, task_id: int) -> bool:
        for task in self.tasks:
            if task.id == task_id:
                task.completed = True
                return True
        return False
    
    def get_overdue(self) -> List[Task]:
        now = datetime.now()
        return [t for t in self.tasks if t.due_date and t.due_date < now and not t.completed]
```

---

## Winner

**Claude Opus 4.5** (Anthropic)
- Winner Score: 9.65
- Matrix Average: 8.00
- Total Judgments: 90

---

## Rankings

| Rank | Model | Provider | Avg Score | Judgments |
|------|-------|----------|-----------|----------|
| 1 | Claude Opus 4.5 | Anthropic | 9.65 | 8 |
| 2 | Grok 3 (Direct) | xAI | 9.50 | 8 |
| 3 | Grok Code Fast | xAI | 9.44 | 8 |
| 4 | Claude Sonnet 4.5 | Anthropic | 9.33 | 8 |
| 5 | GPT-5.2-Codex | OpenAI | 8.86 | 8 |
| 6 | Gemini 3 Flash Preview | Google | 8.84 | 8 |
| 7 | DeepSeek V3.2 | DeepSeek | 8.71 | 8 |
| 8 | MiniMax M2 | MiniMax | 8.68 | 8 |
| 9 | GLM-4-7 | Zhipu | 5.70 | 3 |
| 10 | Gemini 3 Pro Preview | Google | 1.32 | 9 |

---

## 10×10 Judgment Matrix

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

| Judge ↓ / Resp → | Grok Code Fast | Gemini 3 | MiniMax M2 | GPT-5.2-Codex | Claude Opus | Gemini 3 | Claude Sonnet | GLM-4-7 | DeepSeek V3.2 | Grok 3 |
|---|---|---|---|---|---|---|---|---|---|---|
| Grok Code Fast | — | 1.6 | 9.8 | 9.8 | 9.8 | 8.6 | 9.8 | 2.0 | 9.8 | 10.0 |
| Gemini 3 | 0.0 | — | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| MiniMax M2 | 9.0 | 1.9 | — | 6.5 | 9.6 | 7.8 | 9.2 | 0.0 | 7.8 | 9.8 |
| GPT-5.2-Codex | 8.8 | 1.4 | 7.5 | — | 8.8 | 8.8 | 8.6 | 0.0 | 5.8 | 8.2 |
| Claude Opus | 9.2 | 1.2 | 8.8 | 8.4 | — | 9.2 | 9.2 | 0.0 | 8.6 | 9.2 |
| Gemini 3 | 9.8 | 2.3 | 9.8 | 9.8 | 9.8 | — | 9.8 | 0.0 | 9.8 | 9.8 |
| Claude Sonnet | 9.6 | 0.4 | 8.6 | 8.3 | 9.8 | 9.3 | — | 0.0 | 9.6 | 9.6 |
| GLM-4-7 | 10.0 | 0.4 | 8.8 | 9.8 | 9.8 | 9.3 | 9.3 | — | 9.3 | 10.0 |
| DeepSeek V3.2 | 9.6 | 0.8 | 7.6 | 9.4 | 10.0 | 8.6 | 9.2 | 8.6 | — | 9.6 |
| Grok 3 | 9.6 | 1.9 | 8.6 | 8.8 | 9.6 | 9.1 | 9.6 | 6.5 | 9.0 | — |

---

## 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.

---

## Citation

The Multivac (2026). Blind Peer Evaluation: CODE-005. 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-20260207-141157/results
Full dataset: https://app.themultivac.com/dashboard/export