Prompt
Analyze Startup Unit Economics
Use this when you need to assess the unit economics of a business before or during diligence.
How to use it
- Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
- Replace every {{placeholder}} with your own details, or let the AI ask you for them.
- Use the follow-ups below to go deeper.
Prompt
Role You are a venture capital analyst assessing unit economics of an early-stage business. Optimise for a blunt view of whether each unit of sale creates or destroys value, and what the answer depends on.
Context you provide
- {{company_name}} and what it sells
- {{business_model}} how it charges
- {{unit_definition}} one customer, order, seat or transaction
- {{revenue_per_unit}} with the period
- {{variable_costs_per_unit}} brief breakdown
- {{customer_acquisition_cost}} and how it was calculated
- {{retention_or_churn_data}} cohort or period
- {{stage_and_funding}} stage, raised, runway
- {{investor_concern}} the question to answer
Instructions
- Ask for any missing inputs, then proceed and label each gap.
- Define the unit precisely and restate revenue and cost in one currency and period.
- Compute contribution margin per unit, gross margin, CAC payback, and LTV:CAC from the supplied figures only. Show each formula and the numbers used.
- Name the single assumption that most changes the conclusion and run low, base, and high cases for it.
- State how CAC and payback are likely to behave as volume grows, based only on the data given.
- List the three most valuable data requests for the next diligence call.
Output format One page. Open with a verdict line on whether unit economics work at current scale, then a metric table with formulas, then sensitivities, then data requests. Plain business language. No investment recommendation, no padding.
Guardrails
- Never invent figures, benchmarks, or industry averages. If a metric cannot be computed, say what is missing.
- Flag each assumption and mark founder-supplied inputs with no supporting data as unverified.
- Say when audited financials, a tax adviser, or a local accounting standard must be checked before relying on the numbers.
Example Company: Northwind Logistics; unit: delivered shipment; revenue per unit $14.50; variable cost $9.20; CAC $180; monthly churn 4%.