Elon Musk's Grokipedia carries thousands of citations to "questionable" and "problematic" sources, US researchers said Friday, raising doubts about the reliability of the AI-powered encyclopedia as an information tool.

Musk's company xAI launched Grokipedia last month to compete with Wikipedia -- a crowdsourced information repository authored by humans that the billionaire and others on the American right have repeatedly accused of ideological bias.

"It is clear that sourcing guardrails have largely been lifted on Grokipedia," Cornell Tech researchers Harold Triedman and Alexios Mantzarlis wrote in a report seen by AFP.

"This results in the inclusion of questionable sources, and an overall higher prevalence of potentially problematic sources."

The study, which scraped hundreds of thous

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