# The Multivac — Evaluation Report

**Evaluation ID:** EVAL-20260317-020940
**Date:** Mar 17, 2026
**Category:** code
**Question ID:** EVAL-20260317-020940

---

## Question

This Go code processes orders concurrently but occasionally produces incorrect totals. Find and fix all concurrency issues.

```go
package main

import (
    "fmt"
    "sync"
)

type OrderProcessor struct {
    totalRevenue float64
    orderCount   int
    errors       []string
}

func (op *OrderProcessor) ProcessOrder(amount float64, wg *sync.WaitGroup) {
    defer wg.Done()

    if amount <= 0 {
        op.errors = append(op.errors, fmt.Sprintf("invalid amount: %.2f", amount))
        return
    }

    op.totalRevenue += amount
    op.orderCount++
}

func main() {
    op := &OrderProcessor{}
    var wg sync.WaitGroup

    orders := []float64{99.99, 149.50, -10.00, 299.99, 49.99, 0, 199.99}

    for _, amount := range orders {
        wg.Add(1)
        go op.ProcessOrder(amount, &wg)
    }

    wg.Wait()
    fmt.Printf("Total: $%.2f from %d orders\n", op.totalRevenue, op.orderCount)
}
```

---

## Winner

**Qwen 3.5 122B-A10B** (openrouter)
- Winner Score: 9.77
- Matrix Average: 9.47
- Total Judgments: 53

---

## Rankings

| Rank | Model | Provider | Avg Score | Judgments |
|------|-------|----------|-----------|----------|
| 1 | Qwen 3.5 122B-A10B | openrouter | 9.77 | 6 |
| 2 | Qwen 3.5 35B-A3B | openrouter | 9.71 | 7 |
| 3 | Qwen 3.5 397B-A17B | openrouter | 9.51 | 7 |
| 4 | Qwen 3 32B | openrouter | 9.51 | 7 |
| 5 | Qwen 3.5 27B | openrouter | 9.48 | 6 |
| 6 | Qwen 3 8B | openrouter | 9.45 | 6 |
| 7 | Qwen 3.5 9B | openrouter | 9.21 | 7 |
| 8 | Qwen 3 Coder Next | openrouter | 9.09 | 7 |

---

## 10×10 Judgment Matrix

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

| Judge ↓ / Resp → | Qwen 3.5 9B | Qwen 3 8B | Qwen 3 32B | Qwen 3 | Qwen 3.5 | Qwen 3.5 27B | Qwen 3.5 | Qwen 3.5 |
|---|---|---|---|---|---|---|---|---|
| Qwen 3.5 9B | — | 8.4 | 8.3 | 8.6 | 9.6 | 8.8 | 9.0 | 9.0 |
| Qwen 3 8B | 10.0 | — | 10.0 | 9.8 | 10.0 | 10.0 | 10.0 | 9.8 |
| Qwen 3 32B | 9.8 | 9.8 | — | 10.0 | 9.2 | 10.0 | 10.0 | 9.8 |
| Qwen 3 | 10.0 | 10.0 | 10.0 | — | 10.0 | 10.0 | 10.0 | 9.8 |
| Qwen 3.5 | 9.3 | · | 9.8 | 8.6 | — | 9.3 | 9.8 | 9.3 |
| Qwen 3.5 27B | 8.3 | 9.4 | 9.6 | 7.5 | 9.6 | — | · | 9.6 |
| Qwen 3.5 | 8.3 | 9.6 | 9.4 | 9.6 | 9.8 | 8.8 | — | 9.2 |
| Qwen 3.5 | 8.6 | 9.6 | 9.6 | 9.6 | 9.8 | · | 9.8 | — |

---

## 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: EVAL-20260317-020940. 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-20260317-020940/results
Full dataset: https://app.themultivac.com/dashboard/export