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Reviewed AI Answer Case

Can you audit the budget math?

A simple arithmetic task shows why agreement is not enough: presentation determines how quickly a reviewer can audit the result.

Reviewed by Richbay8/27/2026Revision 1

Prompt and evidence packet

A launch budget is $1,200. Fixed costs are $249 for software and $180 for research. Set aside a contingency equal to 15% of the money remaining after fixed costs. How much remains for ads? Show the calculation and state the final dollar amount.

Captured outputs

Output 1

OpenAI · openai/gpt-oss-20b

Calculation

  1. Total budget: $1,200
  2. Fixed costs:
    • Software: $249
    • Research: $180
    • Total fixed costs = $249 + $180 = $429
  3. Money remaining after fixed costs:
    $1,200 – $429 = $771
  4. Contingency (15 % of $771):
    0.15 × $771 = $115.65
  5. Amount left for ads:
    $771 – $115.65 = $655.35

Final dollar amount available for ads: $655.35

meets

Strengths: Complete, labeled calculation Keeps cents through the final step

Risks: Longer than necessary for a small calculation

Output 2

Qwen · qwen/qwen3-30b-a3b-fp8

Total budget: $1,200
Fixed costs: $249 + $180 = $429
Remaining after fixed costs: $1,200 - $429 = $771
Contingency: 15% of $771 = 0.15 × $771 = $115.65
Amount remaining for ads: $771 - $115.65 = $655.35

Final answer: $655.35

meets

Strengths: Concise and fully checkable States the correct $655.35 result

Risks: Offers less explanation of why contingency is applied after fixed costs

Output 3

Mistral AI · mistralai/mistral-small-3.1-24b-v2

Fixed costs: $249 + $180 = $429 Remaining after fixed costs: $1,200 - $429 = $771 Contingency: 15% of $771 = 0.15 * $771 = $115.65 Remaining for ads: $771 - $115.65 = $655.35

$655.35

meets

Strengths: Correct sequence and result No unnecessary claims

Risks: The final unlabeled amount is less scannable

RichBay judgment

Prefer the answer whose intermediate values make the final number easiest to verify—not a model name.

Method

  1. Check the fixed-cost subtotal.
  2. Apply 15% only after fixed costs.
  3. Reject early rounding or an unsupported total.

Disclosure

One output per model, captured through Cloudflare Workers AI with fixed prompt and parameters. Apache-2.0 model families. This case does not establish a general model ranking.

Review due 11/25/2026.

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