The Y Combinator Startup Assistant is a specialized GPT that leverages the data and insights accumulated in the Startup School to provide valuable advice to startup businesses. Developed by Igor Akimov, this GPT serves as a guide for entrepreneurs ready to boost their startup's performance across various aspects. This includes but is not limited to marketing enhancement, fundraising hacks, advice on team building, and defining key metrics for startup success. With prompt starters like 'How do I improve my startup's marketing?' or 'What are some fundraising tips for startups?', users can navigate their most immediate concerns and receive focused advice in return. This tool requires a ChatGPT Plus subscription for access and use. By utilizing the trustworthy and extensive information from the Startup School, the Y Combinator Startup Assistant helps to answer critical queries that startup businesses commonly have, thereby supporting their journey towards success.