Reasoning · 1 checks · max 800 tokens · benched 2026-09-16
Moonshotai models side by side on "Stacked discounts and tax": Kimi K2.7 Code scores 10/10; Kimi K2.7 Code is the cheapest answer scoring 8+ at $0.32 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
An item costs $250.00. A 20% discount is applied, then a $15.00 coupon is subtracted, and finally 8% sales tax is added to the resulting amount. What is the final price? Reply with only the amount in dollars to two decimal places, for example 12.34, with no currency symbol.
Rubric for the judge: The single correct answer 199.80 (250 x 0.8 = 200; 200 - 15 = 185; 185 x 1.08).
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.
moonshotai/kimi-k3
220 in · 65 out (52 reasoning) · 1 words · checks 1/1
199.80
Judge: The output matches the correct answer of 199.80 in the exact format requested (two decimal places, no currency symbol).
moonshotai/kimi-k2.7-code
97 in · 73 out (54 reasoning) · 1 words · checks 1/1
199.80
Judge: The output correctly calculates the final price as 199.80 in the exact format requested (two decimal places, no currency symbol).
moonshotai/kimi-k2.6
97 in · 121 out (82 reasoning) · 1 words · checks 1/1
199.80
Judge: The output correctly calculates the final price as 199.80 in the exact format requested (two decimal places, no currency symbol).
moonshotai/kimi-k2.5
96 in · 151 out (146 reasoning) · 1 words · checks 1/1
199.80
Judge: The output matches the correct answer of 199.80 in the exact format requested (two decimal places, no currency symbol).
Reasoning: The single correct answer 199.80 (250 x 0.8 = 200; 200 - 15 = 185; 185 x 1.08). The deterministic checks are exact.
If the judge's bar of 8/10 is good enough for you, Kimi K2.7 Code at $0.32 per 1,000 runs. If you need the top score, Kimi K2.7 Code at $0.32 per 1,000 runs.
Run it yourself
Re-run this prompt on Moonshotai with your own OpenRouter key, or tweak the wording and see what changes.
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