Plan a monthly budget
Everyday
Give your income, fixed costs and savings goal, and get a category breakdown with suggested adjustments.
Fill the blanks and it copies as you filled it
Plan a monthly budget for me. - Monthly income: - Fixed costs: - Goal: - One table splitting it by category and three lines of suggested adjustments - Don't add categories I didn't list
0 of 3 blanks filled · anything left blank copies with its brackets
What this prompt does
Compared with asking the same thing without the length and format lines.estimate
Estimated output tokens
320
Asked loosely
320
This prompt
Energy (Wh)
0.423
Asked loosely
0.423
This prompt
Tokens estimated from characters; energy measured by Jegham et al. 2025.
A shorter answer, but the same energy band — the measurements are per band.
Reported backfire — Specifying output lengthSpecifying a length longer than needed backfires (a 34% increase in 11% of scenarios)
Reported backfire — Specifying output formatA 78% increase in one GPT-4o scenario. The paper classifies this one as apply-selectively
Where these figures come from
Published figures for the rule itself — not what this prompt saves.
Specifying output length
38.7%mean reduction · 95% CI 29.7–47.7%
Podder et al. 2026 BP#5 · 18 use cases / 57 prompts
by modelGPT-4o 35%Command R+ 49%Mistral-7B 32%
Reduced in every scenario. No backfire reported
Specifying output format
49%mean reduction · 95% CI 37–61%
Podder et al. 2026 BP#6 · 14 use cases / 45 prompts
by modelGPT-4o 40%Command R+ 50%Mistral-7B 57%
Limiting it to the material given
자료 범위 제한
· Anthropic, Reduce hallucinations — 제공한 자료만 쓰도록 명시적으로 제한할 것
· Anthropic, Reduce hallucinations — 근거를 찾을 수 없는 주장은 철회하도록 요구할 것
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