OpenAI Co-founder John Schulman Leaves ChatGPT Maker for Rival Anthropic

The OpenAI logo is seen in this illustration taken May 20, 2024. (Reuters)
The OpenAI logo is seen in this illustration taken May 20, 2024. (Reuters)
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OpenAI Co-founder John Schulman Leaves ChatGPT Maker for Rival Anthropic

The OpenAI logo is seen in this illustration taken May 20, 2024. (Reuters)
The OpenAI logo is seen in this illustration taken May 20, 2024. (Reuters)

John Schulman, one of the co-founders of artificial intelligence company OpenAI, has left the ChatGPT maker for rival Anthropic, he said in a post on social media platform X late Monday.

"This choice stems from my desire to deepen my focus on AI alignment, and to start a new chapter of my career where I can return to hands-on technical work," Schulman said in his X post.

OpenAI's President and co-founder Greg Brockman is also taking a sabbatical through the end of the year, he said in a X post late Monday.

The news was first reported by The Information, which added that Peter Deng, a product manager who joined OpenAI last year, has also exited the company.

OpenAI did not immediately respond to a Reuters request for comment.

The move comes as OpenAI faces significant personnel changes, with the company's AI safety leader Aleksander Madry being reassigned to another role in July.

Another one of OpenAI's co-founders and chief scientist, Ilya Sutskever, left the company in May. Andrej Karpathy, who was also one of the AI firm's founding members left OpenAI in February and started an AI-integrated education platform in July.

Tesla CEO Elon Musk, who was also one of the co-founders of OpenAI and left three years later, revived his lawsuit against the company and CEO Sam Altman on Monday, saying that the firm put profits and commercial interests ahead of public good.



Impostor Uses AI to Impersonate Rubio and Contact Foreign and US Officials

Secretary of State Marco Rubio attends a signing ceremony for a peace agreement between Rwanda and the Democratic Republic of the Congo at the State Department, June 27, 2025, in Washington. (AP Photo/Mark Schiefelbein, File)
Secretary of State Marco Rubio attends a signing ceremony for a peace agreement between Rwanda and the Democratic Republic of the Congo at the State Department, June 27, 2025, in Washington. (AP Photo/Mark Schiefelbein, File)
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Impostor Uses AI to Impersonate Rubio and Contact Foreign and US Officials

Secretary of State Marco Rubio attends a signing ceremony for a peace agreement between Rwanda and the Democratic Republic of the Congo at the State Department, June 27, 2025, in Washington. (AP Photo/Mark Schiefelbein, File)
Secretary of State Marco Rubio attends a signing ceremony for a peace agreement between Rwanda and the Democratic Republic of the Congo at the State Department, June 27, 2025, in Washington. (AP Photo/Mark Schiefelbein, File)

The State Department is warning US diplomats of attempts to impersonate Secretary of State Marco Rubio and possibly other officials using technology driven by artificial intelligence, according to two senior officials and a cable sent last week to all embassies and consulates.

The warning came after the department discovered that an impostor posing as Rubio had attempted to reach out to at least three foreign ministers, a US senator and a governor, according to the July 3 cable, which was first reported by The Washington Post.

The recipients of the scam messages, which were sent by text, Signal and voice mail, were not identified in the cable, a copy of which was shared with The Associated Press.

“The State Department is aware of this incident and is currently investigating the matter,” it said. “The department takes seriously its responsibility to safeguard its information and continuously takes steps to improve the department’s cybersecurity posture to prevent future incidents.”

It declined to comment further due to “security reasons” and the ongoing investigation.

One of the officials said the hoaxes had been unsuccessful and “not very sophisticated.” Nonetheless, the second official said the department deemed it “prudent” to advise all employees and foreign governments, particularly as efforts by foreign actors to compromise information security increase.

The officials were not authorized to discuss the matter publicly and spoke on condition of anonymity.

“There is no direct cyber threat to the department from this campaign, but information shared with a third party could be exposed if targeted individuals are compromised,” the cable said.

The FBI warned in a public service announcement this past spring of a “malicious text and voice messaging campaign” in which unidentified “malicious actors” have been impersonating senior US government officials.

The scheme, according to the FBI, has relied on text messages and AI-generated voice messages that purport to come from a senior US official and that aim to dupe other government officials as well as the victim’s associates and contacts.

It is the second high-level Trump administration official to face such AI-driven impersonation.

The government was investigating after elected officials, business executives and other prominent figures received messages from someone impersonating President Donald Trump’s chief of staff, Susie Wiles. Text messages and phone calls went out from someone who seemed to have gained access to the contacts in Wiles’ personal cellphone, The Wall Street Journal reported in May.

Some of those who received calls heard a voice that sounded like Wiles, which may have been generated by artificial intelligence, according to the newspaper. The messages and calls were not coming from Wiles’ number, the report said.