The Guardian · AI
Wikipedia’s vast reach contrasts with lingering doubts about reliability
Founded in 2001 by Jimmy Wales and Larry Sanger, Wikipedia has 68 million articles and has been consulted trillions of times by billions of people. Its English edition alone contains 5.2 billion words. Despite its widespread use, its open-editing model continues to raise doubts about reliability, and the encyclopedia has no paid factcheckers.

What to know
- 01
Wikipedia has 68 million articles; its English edition contains 5.2 billion words.
- 02
Anyone can edit the encyclopedia, which has no paid factcheckers.
Why it matters
Wikipedia’s widespread use gives practical relevance to discussions of its open-editing model and information credibility.
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