Y Combinator (YC) President and CEO Garry Tan announced that new batches from the last decade have achieved a unicorn rate ranging from 6% to 12%. This statement, shared via a recent tweet, highlights the continued success of the prominent startup accelerator in fostering high-growth companies. Unicorns are privately held startup companies valued at $1 billion or more. Y Combinator, founded in 2005, has cemented its reputation as a leading force in the global startup ecosystem, having backed thousands of companies including notable successes like Airbnb, Stripe, and Dropbox. The accelerator provides seed funding, mentorship, and a robust network to early-stage startups through its intensive, biannual programs. Its rigorous selection process typically sees an acceptance rate of 1.5% to 2%. While previous analyses, such as a PitchBook report, estimated YC's overall unicorn creation rate since 2010 at approximately 4.5%, with cohorts between 2010 and 2015 reaching about 5.4%, Tan's updated figures suggest an upward trend for more recent groups. This higher range, specifically for "new YC batches of the last 10 years," indicates a strong performance in recent cohorts. Kulveer Taggar, an alum, also recently noted that "6% of YC companies become unicorns," aligning with the lower end of Tan's new range. Under Garry Tan's leadership, Y Combinator has emphasized a return to its core strategy, including becoming more selective and focusing on foundational startup principles. Tan, who previously co-founded Initialized Capital and was an early partner at YC, assumed the CEO role in 2023. His vision aims to further enhance the accelerator's impact on building enduring companies. The reported unicorn rate underscores Y Combinator's significant influence on venture capital and the broader tech industry. Such a high success rate for its recent batches reinforces investor confidence in YC-backed companies and solidifies the accelerator's position as a crucial launchpad for future market leaders. This performance continues to attract top entrepreneurial talent globally, shaping the landscape of innovation.