Since its founding in 2005, Y Combinator has expanded significantly, supporting over 1,400 companies, many of which have become major players in the tech industry, such as Airbnb and Dropbox. The accelerator, initially modest in size, has steadily increased its batch sizes, except for a brief reduction in 2013 to address growth challenges. Remarkably, 90% of Y Combinator-backed startups remain active, defying typical startup failure rates. The funding model typically involves $120,000 for 7% equity, and cumulatively, YC companies have raised nearly $10 billion, predominantly for active ventures. The program has evolved to support a diverse range of industries, with a notable increase in fintech and biomedical startups, although SaaS remains predominant. While the majority of YC companies are US-based, particularly in California, the accelerator is open to international applicants, facilitating visa arrangements for successful candidates. Y Combinator fosters a collaborative environment in Mountain View, California, which, along with its strategic location in the tech hub of the Bay Area, enhances networking opportunities. Additionally, many YC companies utilize services from fellow YC alumni, indicating a strong internal ecosystem. The program's future is poised for continued diversification while maintaining a focus on software and technology-driven companies.