San Francisco, California - Elon Musk is considering suing the Anti-Defamation League (ADL) over accusations of rampant antisemitism on X, blaming the US-based Jewish organization for falling revenue.

"To clear our platform's name on the matter of anti-Semitism, it looks like we have no choice but to file a defamation lawsuit against the Anti-Defamation League... oh the irony!" Musk wrote on X on Monday.

"Based on what we’ve heard from advertisers, ADL seems to be responsible for most of our revenue loss," he wrote, adding that the group "would potentially be on the hook for destroying half the value of the company, so roughly $22 billion."

"Advertisers avoid controversy, so all that is needed for ADL to crush our US & European ad revenue is to make unfounded accusations," he wrote in a long thread that started with a clarification that he favors free speech but is "against anti-Semitism of any kind."

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Musk, who bought Twitter last year and rebranded it as X, has recently come under fire for liking posts with the hashtag #BanTheADL, which was trending last week.

The ADL has for years accused the social media site of amplifying antisemitic hate speech.

In a 2016 report, the group said anti-Jewish attacks against journalists had exploded on Twitter, "thanks to the rhetoric in the 2016 presidential campaign."

It accused the social network of failing to control its "trolling problem."

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Billionaire Musk has also previously been accused of fueling antisemitic tropes, including attacks against Jewish philanthropist George Soros.

According to the ADL and the Center for Countering Digital Hate (CCDH), problematic and racist speech has sharply risen on X since Musk completed his $44 billion takeover in October.

Since then, the Tesla boss has fired thousands of the platform's employees, cut content moderation and reinstated former president Donald Trump's account.

Last month, Musk sued the CCDH, accusing it of a smear campaign that damaged the social network's relationship with advertisers.