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How to Write a Great AI Prompt to Brainstorm Startup Ideas

Most people ask AI to "Give me startup ideas"—and wonder why the output is mediocre. Here's how to write a prompt that actually gets you what you want on the first try.

Before

"Give me startup ideas"

Too vague—AI has to guess what you want

After

"Generate 10 micro-SaaS startup ideas targeting solo founders. Each idea must: solve a specific B2B pain point, be buildable by one developer in under 3 months, have a plausible £500/month revenue path within 6 months. Present as a table: Idea | Target customer | Core pain | Revenue model | Why now."

Specific, clear, ready to use

What makes the strong prompt better?

Tight constraints filter out generic or unviable ideas

Table format makes the output scannable and comparable

Adds a 'why now' column that forces market timing thinking

Pro tips for brainstorm startup ideas prompts

  • Always specify your target audience or reader
  • Include concrete examples or context from your situation
  • Set tone guidance—formal, casual, witty, empathetic
  • Add length constraints to avoid rambling output
  • Exclude what you don't want (e.g., "no buzzwords", "no clichés")

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