With about six weeks until the April 15 tax deadline, some filers are turning to artificial intelligence chatbots for help with returns. But tax experts urge filers to use caution.

“Grok can help with your taxes,” Elon Musk said in an X post on Tuesday. Developed by Musk’s startup xAI, Grok is a generative AI chatbot that has been integrated with X.

Musk’s message quoted another X post from xAI’s James Burnham, which mentioned someone who Burnham said had used Grok to double-check tax returns and received a bigger refund.

“Disclaimer: This/Grok is not tax advice so always confirm yourself too,” wrote Burnham, who works as general counsel for xAI and X.

However, uncovering a bigger refund doesn’t necessarily mean your return is correct, according to Tom O’Saben, director of tax content and government relations at the National Association of Tax Professionals.