With tech platforms reducing human fact-checkers, users are increasingly relying on AI-powered chatbots -- including xAI's Grok, OpenAI's ChatGPT, and Google's Gemini -- in search of reliable information.
"Hey @Grok, is this true?" has become a common query on Elon Musk's platform X, where the AI assistant is built in, reflecting the growing trend of seeking instant debunks on social media.
But the responses are often themselves riddled with misinformation.
Grok -- now under renewed scrutiny for inserting "white genocide," a far-right conspiracy theory, into unrelated queries -- wrongly identified old video footage from Sudan's Khartoum airport as a missile strike on Pakistan's Nur Khan airbase during the country's recent conflict with India.
Unrelated footage of a building on fire in Nepal was misidentified as "likely" showing Pakistan's military response to Indian strikes.
"The growing reliance on Grok as a fact-checker comes as X and other major tech companies have scaled back investments in human fact-checkers," McKenzie Sadeghi, a researcher with the disinformation watchdog NewsGuard, told AFP.
"Our research has repeatedly found that AI chatbots are not reliable sources for news and information, particularly when it comes to breaking news," she warned.
- 'Fabricated' -
NewsGuard's research found that 10 leading chatbots were prone to repeating falsehoods, including Russian disinformation narratives and false or misleading claims related to the recent Australian election.
In a recent study of eight AI search tools, the Tow Center for Digital Journalism at Columbia University found that chatbots were "generally bad at declining to answer questions they couldn't answer accurately, offering incorrect or speculative answers instead."
When AFP fact-checkers in Uruguay asked Gemini about an AI-generated image of a woman, it not only confirmed its authenticity but fabricated details about her identity and where the image was likely taken.
Grok recently labeled a purported video of a giant anaconda swimming in the Amazon River as "genuine," even citing credible-sounding scientific expeditions to support its false claim.
In reality, the video was AI-generated, AFP fact-checkers in Latin America reported, noting that many users cited Grok's assessment as evidence the clip was real.
Such findings have raised concerns as surveys show that online users are increasingly shifting from traditional search engines to AI chatbots for information gathering and verification.
The shift also comes as Meta announced earlier this year it was ending its third-party fact-checking program in the United States, turning over the task of debunking falsehoods to ordinary users under a model known as "Community Notes," popularized by X.
Researchers have repeatedly questioned the effectiveness of "Community Notes" in combating falsehoods.
- 'Biased answers' -
Human fact-checking has long been a flashpoint in a hyperpolarized political climate, particularly in the United States, where conservative advocates maintain it suppresses free speech and censors right-wing content -- something professional fact-checkers vehemently reject.
AFP currently works in 26 languages with Facebook's fact-checking program, including in Asia, Latin America, and the European Union.
The quality and accuracy of AI chatbots can vary, depending on how they are trained and programmed, prompting concerns that their output may be subject to political influence or control.
Musk's xAI recently blamed an "unauthorized modification" for causing Grok to generate unsolicited posts referencing "white genocide" in South Africa.
When AI expert David Caswell asked Grok who might have modified its system prompt, the chatbot named Musk as the "most likely" culprit.
Musk, the South African-born billionaire backer of President Donald Trump, has previously peddled the unfounded claim that South Africa's leaders were "openly pushing for genocide" of white people.
"We have seen the way AI assistants can either fabricate results or give biased answers after human coders specifically change their instructions," Angie Holan, director of the International Fact-Checking Network, told AFP.
"I am especially concerned about the way Grok has mishandled requests concerning very sensitive matters after receiving instructions to provide pre-authorized answers."
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