(SNews) – Twitter CEO Elon Musk has turned up the heat on his feud with Bill Gates and threatened to sue Microsoft.

Musk is accusing the software giant of illegally using Twitter’s data to train its artificial intelligence (AI) engine.

This came after Microsoft balked at paying Twitter for use of its application programming interface (API).

Twitter Daily News reported: “Microsoft drops Twitter from its advertising platform as they refuse to pay Twitter’s API fees.

“Starting on April 25, 2023, Smart Campaigns with Multi-platform will no longer support Twitter.

“You’ll be unable to: Access your Twitter account through our social management tool, Create and manage drafts or Tweets, View past Tweets and engagement, Schedule Tweets, Other social media channels such as Facebook, Instagram, and LinkedIn will continue to be available.”

Musk responded with: “They trained illegally using Twitter data. Lawsuit time.”

Another user suggested Musk was being hypocritical about AI due to the fact that he founded OpenAI, the company that created ChatGPT and teamed up with Microsoft after he left.

“OpenAI was created as an open source (which is why I named it ‘Open’ AI), non-profit company to serve as a counterweight to Google,” Musk fired back.

“But now it has become a closed source, maximum-profit company effectively controlled by Microsoft.

“Not what I intended at all.”