Wikipedia and Creative Commons are both marking 25 years in 2026. One demonstrated that a global community can build an encyclopedia available to everyone; the other created the legal and technical language through which authors can permit sharing and reuse in advance.

Open knowledge is more than content

Wikimania 2026 in Paris placed freedom, equity, and reliability at the centre of discussions about Wikimedia’s future. Creative Commons licences are part of that infrastructure: Wikipedia uses CC BY-SA, allowing copying, adaptation, and redistribution with attribution and share-alike terms.

This combination of community, transparent rules, and machine-readable licensing turned open knowledge into internet infrastructure used by students, journalists, researchers, search engines—and generative AI systems.

The Dimitrium view: AI depends on the commons, not the reverse

AI has made the value of open knowledge more visible, along with its fragility. A model can absorb the work of millions while frequently hiding the source, author, and community maintaining the information. Technical permission to reuse material cannot be the end of the responsibility discussion.

The next 25 years will require better attribution, transparency, and reciprocity. The goal should not be to close knowledge in response to exploitation, but to ensure that those extracting the most value also participate in sustaining its infrastructure.

Sources: Creative Commons — Celebrating 25 Years of Choosing to Share and Wikimania 2026