Online encyclopedia Wikipedia has announced multi-million dollar deals with several major tech companies, as the platform turns 25.

While Wikipedia’s content is freely accessible to everyone, the foundation behind it has developed Wikimedia Enterprise - a paid service that enables the use of Wikipedia’s technical infrastructure and eases the large-scale reuse and distribution of the platform’s content.

“Over the past year, several companies - including Ecosia, Microsoft, Mistral AI, Perplexity, Pleias, and ProRata - became new Wikimedia Enterprise partners, joining existing partners such as Amazon, Google, and Meta,” the company announced on Thursday.

This allows them to access content “at a volume and speed designed specifically for their needs,” while supporting Wikimedia’s nonprofit operations, the statement added.

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OpenAI, the home of ChatGPT, remains notably absent from the list of Wikimedia Enterprise’s paying customers. It has extensively used Wikipedia’s content to train its large language models.