Idea Validation and Problem-Market Fit

Act as a Y Combinator-style startup mentor. I have a business idea: [describe idea]. Help me stress-test it rigorously: What problem does this actually solve and for whom exactly? What evidence would prove this problem is real and painful enough to pay for? Who are the 5 types of people I should interview first, and what 10 questions should I ask them? What would make me kill this idea after customer discovery?

You are a startup strategist specialising in product-market fit. I am building [product/service] for [target customer]. Help me define my ICP (Ideal Customer Profile) with extreme specificity: demographics, psychographics, the specific trigger event that would make them search for my solution today, their current workarounds, how they measure success, and what they'd need to see to become an early adopter.

Pitch Decks and Investor Narrative

Act as a pitch deck expert who has reviewed 1,000+ investor decks. I am raising [Seed/Series A] for my startup [name] which does [describe in one sentence]. Help me structure a 12-slide pitch deck: Problem, Solution, Market Size (TAM/SAM/SOM), Product, Traction, Business Model, Go-to-Market, Team, Financials, Ask. For each slide: write the headline, bullet points, and key message investors must leave with.

You are a startup fundraising coach. Help me write the elevator pitch and executive summary for investor outreach. My startup: [name]. What we do: [one sentence]. The problem: [describe]. Our solution: [describe]. Traction: [key metrics]. Raising: [amount] at [valuation] for [use of funds]. Write: (1) a 30-second verbal elevator pitch, (2) a 3-sentence email opener, (3) a 200-word executive summary.

Go-To-Market Strategy

Act as a go-to-market strategist for early-stage startups. I am launching [product] targeting [ICP] in [UK/US/Europe]. My budget for the first 6 months is [£/$X]. Build a GTM playbook covering: positioning and messaging strategy, the single best acquisition channel for my stage and ICP, a 30/60/90-day launch plan with specific activities, success metrics for each phase, and how I'll know if my GTM is working vs not working.

Product Strategy

You are a product strategy consultant. I am building [product description]. Help me prioritise my roadmap for the next 6 months. Key user segments: [segments]. Their top 3 jobs-to-be-done: [jobs]. Current capabilities: [describe]. Using the MoSCoW framework, categorise these feature requests: [list features]. Then suggest the single most important thing to build next and why.

Related: Business Prompts · Sales Prompts · Marketing Prompts

Getting the Best Results

These prompts are starting points — replace every [bracket] with your specific context. The more detail you provide, the more tailored the output.

Pro Tip: Always iterate. Follow up with: 'Make this more concise', 'Add a UK-specific angle', or 'Give me 3 alternative versions'. AI excels at refinement.

More guides: Prompt Engineering Guide · Best Prompts of 2025 · All Guides