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Elon Musk Threatens to Sue Microsoft After it Drops Twitter From Ad Platform

Microsoft is winding down support for Twitter on its advertising platform, likely because the social media platform wants to charge clients at least $42,000 for enterprise API access.

 & Michael Kan Principal Reporter

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Microsoft is dropping Twitter from one of its advertising platforms—and Elon Musk isn’t happy. 

Microsoft quietly announced the removal of Twitter support from the company’s Smart Campaigns advertising platform, according to Mashable. This means Microsoft advertising clients won’t be able access their Twitter accounts or create and publish tweets through Smart Campaigns starting on April 25.   

Redmond didn't explain why it’s winding down the support. But Twitter reportedly wants to charge companies from $42,000 to as much as $210,000 per month for access to the company’s API, which can allow third-party apps to interface with the social media service. 

So it looks like Microsoft has joined others in declining to pay the new API access fee. In response, Musk is threatening legal action. The reason? Twitter’s CEO is alleging Microsoft mined Twitter’s data, such as user tweets, to help train Microsoft's AI-powered programs. Now he’s demanding compensation.

“They trained illegally using Twitter data. Lawsuit time,” Musk said in a tweet.

Musk didn’t provide any evidence for the illegal training, although programs such as ChatGPT were trained on public internet data, such as Wikipedia articles. However, Musk made his comment right as rival social media platform Reddit announced plans to charge for API access, citing how Reddit user-generated data is being used to train AI models. 

Musk also has a beef with Microsoft, which has become the major partner for OpenAI, the company behind ChatGPT. Although Musk helped found OpenAI, he’s since been blasting the San Francisco-based lab as a “closed source, maximum-profit company effectively controlled by Microsoft.” 

At the same time, he's criticized ChatGPT for allegedly spouting misinformation, propaganda, and promoting political correctness. So in response, Musk says he plans on countering OpenAI and Microsoft with his own AI chatbot program, which will be called TruthGPT. 

Microsoft didn’t immediately respond to a request for comment.

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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