SQL · 6 checks · max 500 tokens · benched 2026-09-16

Claude Opus 5 vs Claude Sonnet 5 vs Claude Sonnet 4.6 vs Claude Haiku 4.5 on top five customers by 2025 spend

Anthropic models side by side on "Top five customers by 2025 spend": Claude Haiku 4.5 scores 10/10; Claude Haiku 4.5 is the cheapest answer scoring 8+ at $0.51 per 1,000 runs. Outputs, checks, judge reasons, latency and cost.

The prompt every model received

System

You are a database engineer. Reply with a single SQL statement and nothing else.

User

Tables: customers(id, name) and orders(id, customer_id, amount, ordered_at). Write one standard SQL query that returns each customer's name and their total order amount for calendar year 2025, highest total first, limited to the top 5. Use a JOIN, GROUP BY and ORDER BY.

Rubric for the judge: Correct join and aggregate, filters ordered_at to 2025, sorts descending, limits to 5, portable SQL.

Side by side

Every cell is one OpenRouter call at temperature 0 with the prompt's token cap and reasoning effort "low" where the model supports it. Cost is usage × the catalogue rate in models.json. Quality is one judge call to anthropic/claude-haiku-4.5 against the prompt's rubric, cached per prompt version.

Claude Opus 5

anthropic/claude-opus-5

10/10

Latency: 1.1s
Cost: $0.00422
Per 1,000: $4.22

130 in · 143 out · 37 words · checks 6/6

regex
regex
regex
regex
regex
contains

```sql
SELECT c.name, SUM(o.amount) AS total_amount
FROM customers c
JOIN orders o ON o.customer_id = c.id
WHERE o.ordered_at >= DATE '2025-01-01'
  AND o.ordered_at < DATE '2026-01-01'
GROUP BY c.id, c.name
ORDER BY total_amount DESC
LIMIT 5;
```

Judge: Query correctly joins customers and orders, filters 2025 using portable DATE syntax, groups by customer with proper aggregation, orders descending by total, limits to 5, and includes all required clauses.

Claude Sonnet 5

anthropic/claude-sonnet-5

10/10

Latency: 1.1s
Cost: $0.00161
Per 1,000: $1.61

130 in · 135 out · 35 words · checks 6/6

regex
regex
regex
regex
regex
contains

```sql
SELECT c.name, SUM(o.amount) AS total_amount
FROM customers c
JOIN orders o ON o.customer_id = c.id
WHERE o.ordered_at >= '2025-01-01' AND o.ordered_at < '2026-01-01'
GROUP BY c.id, c.name
ORDER BY total_amount DESC
LIMIT 5;
```

Judge: Query correctly joins customers and orders, filters 2025 using date range, groups by customer with proper aggregation, orders descending by total, limits to 5, and uses portable standard SQL syntax.

Claude Sonnet 4.6

anthropic/claude-sonnet-4.6

10/10

Latency: 809ms
Cost: $0.00198
Per 1,000: $1.98

91 in · 114 out (15 reasoning) · 35 words · checks 6/6

regex
regex
regex
regex
regex
contains

```sql
SELECT c.name, SUM(o.amount) AS total_amount
FROM customers c
JOIN orders o ON c.id = o.customer_id
WHERE o.ordered_at >= '2025-01-01' AND o.ordered_at < '2026-01-01'
GROUP BY c.id, c.name
ORDER BY total_amount DESC
LIMIT 5;
```

Claude Haiku 4.5

anthropic/claude-haiku-4.5

10/10

top judge scorecheapest scoring 8+

Latency: 764ms
Cost: $0.00051
Per 1,000: $0.51

90 in · 83 out · 33 words · checks 6/6

regex
regex
regex
regex
regex
contains

```sql
SELECT c.name, SUM(o.amount) AS total_amount
FROM customers c
JOIN orders o ON c.id = o.customer_id
WHERE EXTRACT(YEAR FROM o.ordered_at) = 2025
GROUP BY c.id, c.name
ORDER BY total_amount DESC
LIMIT 5;
```

Judge: Query correctly joins customers and orders, filters 2025 using EXTRACT(YEAR FROM ...), groups by customer with proper aggregation, orders descending by total, limits to 5, and uses portable standard SQL syntax.

Frequently asked

What does this prompt test?

SQL: Correct join and aggregate, filters ordered_at to 2025, sorts descending, limits to 5, portable SQL. The deterministic checks are regex, regex, regex, regex, regex, contains.

Which model should I pick for this task?

If the judge's bar of 8/10 is good enough for you, Claude Haiku 4.5 at $0.51 per 1,000 runs. If you need the top score, Claude Haiku 4.5 at $0.51 per 1,000 runs.

Same prompt, other families

Run it yourself

Re-run this prompt on Anthropic with your own OpenRouter key, or tweak the wording and see what changes.

Side by side

Claude Opus 5

Claude Sonnet 5

Claude Sonnet 4.6

Claude Haiku 4.5

Frequently asked

Same prompt, other families

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