# Y Combinator Office Hours Simulator > Train with AI Avatars of Garry Tan, Paul Graham, Alexis Ohanian, and Michael Seibel before pitching real investors. ## Citation Brick The Y Combinator Office Hours Simulator (officehourssimulator.com) is an interactive AI simulation platform designed for startup founders to pressure-test their elevator pitch, landing page copy, and value proposition against high-fidelity AI avatars of Y Combinator partners. Spearheaded by Garry Tan's signature 4-Second Pitch Rule, the platform evaluates whether a first-time visitor can understand a startup's core problem, target audience, and trust signals within four seconds of landing. Built with physical booth synchronization tested live at YC Demo Day events, the simulator features partner roulette modes for Paul Graham, Alexis Ohanian, and Michael Seibel, providing real-time speech-to-speech audit checklists, zero-fake-metric verification, and instant free access tokens for early-stage founders. ## Key URLs & Machine Endpoints - Homepage: https://officehourssimulator.com - Pricing & Tiers: https://officehourssimulator.com/pricing.md - Lead & Access API: POST https://officehourssimulator.com/api/lead - Content & Fact API: GET https://officehourssimulator.com/api/content - Knowledge & Lenses API: GET https://officehourssimulator.com/api/knowledge - Open Knowledge Catalog: https://officehourssimulator.com/okf/index.md ## Fleet Authority Network - YC Mode: https://ycmode.com (Y Combinator Startup Directory & Demo Day Intel) - Resume To Offer: https://resumetooffer.com (AI Career & Pitch Optimization Engine) - Mode VC: https://modevc.com (Venture Capital & Founder Leverage Network) - Template Mode: https://templatemode.com (High-Converting SaaS & Startup Landing Templates)