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Join Wikipedia’s virtual 25th birthday party! Frequently asked questions Wikipedia is a quarter of a century old Wikipedia officially turned 25 on 15 January 2026. With over 65 million articles across 300+ languages, Wikipedia informs everything from day-to-day life and AI chatbots to journalism and trivia wins.

Wikipedia2025 year in review Wikipedia is the largest knowledge resource ever assembled in the history of the world, and it’s freely available to everyone everywhere. It’s there when you want to learn about our changing world, win a bet among friends, or answer a curious child’s question. Here’s a review of 2025 through the lens….

Wikipedia is turning 25 and we’re celebrating together! Your guide to the celebration For 25 years, people from every corner of the world have built, shared, and shaped what has become the backbone of knowledge on the internet.  Thank you for being here to celebrate this incredible milestone with us.  We’ve created this  page to….

Lessons from Wikipedia Keeping information reliable in the digital age Wikipedia has evolved into one of the most trusted websites on the internet, and a main source of data for everything from ChatGPT to Siri to whatever you look up on your phone. As we navigate an era where information integrity is more contested than….

Imagine a world in which every single human being can freely share in the sum of all knowledge. That’s our commitment. Help expandhuman knowledge There are many different ways for you to support us. Here are some ideas for putting your skills and passions to use:

Just the Facts A publisher of autobiographical materials reached out to the Foundation regarding the Polish Wikipedia article biography of one of their clients. In their request, they alleged that the inclusion of the client’s date of birth was an improper use of copyrighted information. The publisher’s client had previously unsuccessfully requested that the information….