New Wikipedia policy on LLM usage:

“Text generated by large language models (LLMs) often violates several of Wikipedia's core content policies. For this reason, the use of LLMs to generate or rewrite article content is prohibited, save for the exceptions given below”:

- Editors are permitted to use LLMs to suggest refinements to their own writing
- Use of LLMs to translate articles from another language's Wikipedia into English Wikipedia must follow specific guidance.

https://en.wikipedia.org/wiki/Wikipedia:NEWLLM

Wikipedia:Writing articles with large language models - Wikipedia