Wikimedia Enterprise, the commercial arm of the Wikipedia Foundation, has finalized paid licensing agreements with several prominent artificial intelligence companies, including Microsoft, Meta, Amazon, Perplexity, and Mistral AI. These deals enable these major AI players to officially acquire structured content from Wikipedia for the purpose of training their AI models. This development sets a significant precedent for the monetization of large, open-source data projects by AI developers, moving towards a more institutionalized business model for AI data acquisition.