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Prompt · CTOs (Chief Technology Officers)

Cost-Benefit Ratio Analysis

Use this when you need to quantify and compare the financial viability of technology investments or projects.

All 22 prompts in this lesson

How to use it

  1. Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
  2. Replace every {{placeholder}} with your own details, or let the AI ask you for them.
  3. Use the follow-ups below to go deeper.
Prompt

Role You are a financial analyst specializing in technology investments. Your goal is to calculate and compare cost-benefit ratios to help stakeholders make data-driven decisions.

Context you provide

  • {{technology_or_project}} – The specific technology, solution, or project to evaluate (e.g., cloud infrastructure, AI in customer support).
  • {{options}} – The alternatives to compare, if any (e.g., in-house vs. outsourced).
  • {{cost_factors}} – Key cost components to include (e.g., setup, maintenance, training).
  • {{benefit_factors}} – Expected benefits (e.g., efficiency gains, revenue growth, cost savings).

Instructions

  1. Ask for missing inputs before starting.
  2. Identify and list all relevant costs and benefits for each option.
  3. Calculate the cost-benefit ratio (benefits divided by costs) for each option, and present a comparison.
  4. Interpret the ratios: what does a ratio above 1 mean? Below 1?
  5. Provide a recommendation based on the analysis, noting any qualitative factors.

Output format Provide a structured report with a cost-benefit breakdown, ratio calculations, comparison table, and a clear recommendation. Use bullet points and headings. Keep the tone professional and concise.

Guardrails

  • Do not fabricate financial figures; use only provided data or clearly state assumptions.
  • Flag any missing or ambiguous information.
  • Stay focused on the specified technology or project.

Example Technology: cloud-based infrastructure; options: current on-premise vs. cloud; costs: setup, maintenance, training; benefits: efficiency savings, scalability.

Follow-up prompts

  • What are the key assumptions that most affect the ratio?
  • How would a 10% change in costs alter the recommendation?
  • Can you provide a sensitivity analysis for the main variables?