Reasoning · 1 checks · max 800 tokens · benched 2026-09-16
Anthropic models side by side on "Count sellable units": Claude Sonnet 5 scores 10/10; Claude Sonnet 5 is the cheapest answer scoring 8+ at $0.82 per 1,000 runs. Outputs, checks, judge reasons, latency and cost.
System
Think carefully, then give only the final answer in the requested format.
User
A warehouse receives 3 pallets. Each pallet holds 48 boxes and each box holds 12 units. On inspection, 15% of the boxes are damaged; round the number of damaged boxes down to a whole box. The damaged boxes are discarded. Then 7 undamaged boxes are sent to the quality lab and are not sold. How many units are left to sell? Reply with only the number.
Rubric for the judge: The single correct answer 1392 (144 boxes, 21 damaged, 7 to the lab, 116 x 12).
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.
anthropic/claude-opus-5
154 in · 46 out (42 reasoning) · 1 words · checks 1/1
1392
Judge: The output matches the correct answer of 1392 units exactly, provided in the required format of a bare number only.
anthropic/claude-sonnet-5
154 in · 51 out (46 reasoning) · 1 words · checks 1/1
1392
Judge: The output matches the correct answer of 1392 units exactly, provided in the required format of a bare number only.
anthropic/claude-sonnet-4.6
112 in · 97 out (90 reasoning) · 1 words · checks 1/1
1392
Judge: The output matches the correct answer of 1392 units exactly, provided in the required format of a bare number only.
anthropic/claude-haiku-4.5
111 in · 148 out · 68 words · checks 0/1
Let me work through this step-by-step. **Total boxes received:** 3 pallets × 48 boxes/pallet = 144 boxes **Damaged boxes:** 15% of 144 = 0.15 × 144 = 21.6 Rounded down = 21 boxes **Undamaged boxes after discarding damaged ones:** 144 - 21 = 123 boxes **Boxes available to sell:** 123 - 7 = 116 boxes **Units available to sell:** 116 boxes × 12 units/box = 1,392 units 1392
Judge: The output correctly calculates all steps (144 total boxes, 21 damaged, 123 undamaged, 116 available to sell, 1392 units) and provides only the required number as the final answer.
Reasoning: The single correct answer 1392 (144 boxes, 21 damaged, 7 to the lab, 116 x 12). The deterministic checks are exact.
If the judge's bar of 8/10 is good enough for you, Claude Sonnet 5 at $0.82 per 1,000 runs. If you need the top score, Claude Sonnet 5 at $0.82 per 1,000 runs.
Run it yourself
Re-run this prompt on Anthropic with your own OpenRouter key, or tweak the wording and see what changes.
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