1. Analyze Selected Y Combinator Startups

2. Examine Each Startup’s Core Elements

For each selected startup, document:

3. Create a Structured Dataset

4. Use This Dataset for Deeper Research

5. Idea Formation is a Process, Not an Instant Spark


YC Batch Name Problem Solution Industry Revenue Model YC Link
S05 Reddit No centralized platform for niche community discussions User-driven online forums with voting system Social Media Advertising, Premium Memberships https://www.ycombinator.com/companies/reddit
S13 DoorDash Limited food delivery options & inefficient logistics On-demand food delivery marketplace connecting restaurants & users FoodTech Commission from restaurants, Delivery fees, Subscription (DashPass) https://www.ycombinator.com/companies/doordash
W09 Airbnb Hotels are expensive & lack local experiences Peer-to-peer home rental marketplace Hospitality Service fee from hosts & guests https://www.ycombinator.com/companies/airbnb
S10 Stripe Difficult & complex online payment processing Developer-friendly API for easy payment integration FinTech Transaction fees, SaaS enterprise pricing https://www.ycombinator.com/companies/stripe

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Revenue Models

  1. Subscription: Users pay a recurring fee (monthly, yearly) to access a product or service. Netflix, Spotify, Figma

  2. 🔥 SaaS: Businesses offer cloud-based software solutions with a recurring fee. Slack, Zoom, Notion

  3. Advertising: Platforms provide free content or services while earning revenue from ads. Google, Facebook & Instagram, YouTube

  4. Marketplace: The platform connects buyers & sellers and takes a commission per transaction. Airbnb, Uber, Etsy

  5. Freemium: Offers a basic free version while charging for premium features. LinkedIn, Dropbox, Tinder

  6. Transaction-Based: Customers pay per transaction or usage instead of a fixed fee. PayPal, Stripe, AWS

  7. Licensing: Companies charge a fee to use their technology, patents, or content. Microsoft Office, Adobe Creative, Arm Holdings

  8. Affiliate Marketing: Companies earn a commission for referring customers to other businesses. Amazon Associates, YouTube & Instagram Influencers, NerdWallet

  9. API Monetization (Pay-Per-Use or Subscription): Developers & businesses pay per API request or subscribe to high-volume API access. OpenAI API, Claude AI API, ElevenLabs (AI Voice API)

💡 Which Revenue Model is Best for Your AI Startup?