LISBON, PORTUGAL – NOVEMBER 07: LISBON, PORTUGAL – NOVEMBER 07: Emmett Shear, Twitch, on the Contentmakers 1 Stage Stage during day two of Web Summit 2018 at the Altice Arena on November 7, 2018 in Lisbon, Portugal. In 2018, more than 70,000 attendees from over 170 countries will fly to Lisbon for Web Summit, including over 1,500 startups, 1,200 speakers and 2,600 international journalists. (Photo by Eoin Noonan /Web Summit via Getty Images)
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It’s been just a few days since Sam Altman, the former CEO of OpenAI, was ousted in a shock move — and his replacement has already been named.
After a weekend of rumor and speculation, Emmett Shear — former co-founder and CEO of Twitch — confirmed he will take the top job at probably the most high-profile AI company in the world.
In a post on X early Monday, Shear said he got a call from the company asking him to become interim CEO of the company and that he had accepted, “after consulting with my family and reflecting on it for just a few hours.”
It comes after Altman, who led OpenAI through its development of the wildly popular generative artificial intelligence chatbot ChatGPT, left after facing pressure from the board to step down.
The reasons behind his departure are unclear, but some insiders had expressed concern that Altman wasn’t the right fit for the company. He is involved in another company, the eyeball-scanning tech company Worldcoin, for example, and there were concerns that this may have served as a distraction.
Who is Emmett Shear?
Shear is a big name in Silicon Valley — but to most people, he is unknown.
Shear took Twitch — the live-streaming site he co-founded with Justin Kan, Michael Seibel, and Kyle Vogt in 2007 — from originally broadcasting the life of Kan 24/7, to a worldwide phenomenon.
Twitch was acquired by Amazon for $1 billion in 2014 and Shear stepped down as CEO of Twitch last year.
During his time at the company, he faced tensions from streamers who believed that the platform wasn’t defending their interests. It found itself locked in a tense battle with rival YouTube for talent, with the latter attracting several high-profile personalities from Twitch with lucrative exclusive broadcasting deals.
After Shear’s departure from the streaming site, he became a partner at Y Combinator, the startup accelerator. Altman was formerly president of Y Combinator.
Before Shear started Twitch, he was the co-founder of Kiko Calendar, a calendar app he worked on through the 2005 Y Combinator program.
In his post on X Monday, Shear explained why he had taken the OpenAI job.
“I had recently resigned from my role as CEO of Twitch due to the birth of my now 9 month old son,” Shear said in the post early Monday.
“Spending time with him has been every bit as rewarding as I thought it would be, and I was happily avoiding full time employment.”
“I took this job because I believe that OpenAI is one of the most important companies currently in existence. When the board shared the situation and asked me to take the role, I did not make the decision lightly. Ultimately I felt that I had a duty to help if I could,” he added.
Why it matters
The swift elevation of Shear to OpenAI’s CEO puts him in charge of one of the most important companies in the AI world today.
OpenAI is known for its popular generative AI chatbot, ChatGPT.
The powerful technology behind that chatbot is called a large language model, or LLM. This is an AI model capable of processing and generating human language, based on training from vast amounts of data.
As head of OpenAI, Shear will likely face pressure from regulators who have been heavily scrutinizing AI model companies given the risks the technology poses around misinformation and potential displacement of jobs.
Earlier this month, the U.K. held a pivotal summit on AI safety, attended by major foundational AI companies, to discuss some of the most pressing issues in the field.
Particularly high on the list of discussion areas for world leaders was the “existential risk” that AI poses to humans.
Altman has himself warned of the threat of AI to eradicate humanity, despite being at the helm of a company that was working on rapidly advancing the technology.
Clarification: The headline of this story has been amended to reflect the fact that Shear has been named interim CEO of OpenAI.
In this photo illustration, the logo of TikTok is displayed on a smartphone screen on April 5, 2025 in Shanghai, China.
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President Donald Trump on Tuesday extended the deadline for ByteDance to divest TikTok’s U.S. business, which will be owned by an investor consortium that includes Oracle and Silver Lake, CNBC’s David Faber reported.
It’s the fourth time Trump has extended the deadline. The extension, as described in an executive order, precludes the Department of Justice from enforcing a national security law that would effectively ban TikTok in the U.S. until Dec. 16.
U.S. Treasury Secretary Scott Bessent revealed on Monday that a “framework deal” had been reached involving TikTok. Under the national security law, which would have come into effect on Wednesday, app store operators like Apple and Google and internet service providers would be penalized for providing services to TikTok’s U.S. operations if a deal was not reached.
Under the framework deal, about 80% of TikTok’s U.S. business would be owned by an investor consortium that includes Oracle, Silver Lake and Andreessen Horowitz, the Wall Street Journal on Tuesday reported. As part of the arrangement, existing U.S. users would need to shift to a new app, according to report.
Trump and Chinese President Xi Jinping are expected on Friday to discuss the terms of the TikTok-related deal that Treasury Secretary Scott Bessent revealed on Monday.
The deal, which is expected to close in the next 30 to 45 days, includes new investors, existing ByteDance investors and will result in Oracle maintaining its cloud computing agreement with TikTok, CNBC’s David Faber reported earlier on Tuesday.
Bessent said Tuesday during CNBC’s Squawk Box that Trump was willing to let TikTok “go dark,” which spurred China to agree to a deal. The Treasury Secretary said that the deal’s commercial terms had already been finalized “in essence” since March or April, but China put the deal on hold following Trump’s tough tariffs and trade policies.
“We were able to reach a series of agreements, mostly for things we will not be doing in the future that have no effect on our national security,” Bessent said Tuesday.
A senior White House official said in a statement that, “Any details of the TikTok framework are pure speculation unless they are announced by this administration.”
Microsoft CEO Satya Nadella speaks at Microsoft Build AI Day in Jakarta, Indonesia, on April 30, 2024.
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LONDON — Microsoft said on Tuesday that it plans to invest $30 billion in the U.K. by 2028, as the company builds out its artificial intelligence infrastructure.
The investment includes an additional $15.5 billion in capital expansion and $15.1 billion in its U.K. operations, Microsoft said. The company said the investment would enable it to build the U.K.’s “largest supercomputer,” with more than 23,000 advanced graphics processing units, in partnership with Nscale, a British cloud computing firm.
The spending commitment comes as President Donald Trump embarks on a state visit to Britain. Trump arrived in the U.K. Tuesday evening and is set to be greeted at Windsor Castle on Wednesday by King Charles and Queen Camilla.
During his visit, all eyes are on U.K. Prime Minister Keir Starmer, who is under pressure to bring stability to the country after the exit of Deputy Prime Minister Angela Rayner over a house tax scandal and a major cabinet reshuffle.
“I haven’t always been optimistic every single day about the business climate in the U.K.,” Smith said. However, he added, “I am very encouraged by the steps that the government has taken over the last few years.”
“Just a few years ago, this kind of investment would have been inconceivable because of the regulatory climate then and because there just wasn’t the need or demand for this kind of large AI investment,” Smith said.
Starmer and Trump are expected to sign a new deal Wednesday “to unlock investment and collaboration in AI, Quantum, and Nuclear technologies,” the government said in a statement late Tuesday.
Waymo partners with Uber to bring robotaxi service to Atlanta and Austin.
Uber Technologies Inc.
Alphabet-owned Waymo obtained a permit to start testing its robotaxis at San Francisco International Airport, San Francisco Mayor Daniel Lurie and the company announced Tuesday.
Waymo will partner with the airport to roll out its commercial robotaxi service in phases, “beginning with employee testing soon ahead of welcoming Bay Area riders,” company spokesperson Chris Bonelli told CNBC.
That means the robotaxis will start with human drivers on board, ready to take control of the vehicles if needed, and eventually operate as a driverless ride-hail service.
Waymo is already operating its service in San Mateo County, where the airport is based, and in nearby San Francisco, but it does not yet have permission to ferry passengers to or from the airport.
In 2022, Phoenix Sky Harbor International Airport gave Waymo permission to test and operate its service there, and earlier this month, Waymo secured a permit to begin testing at San Jose Mineta International Airport.
Last month, Lurie said Waymo could operate a limited passenger service on one of San Francisco’s main thoroughfares, Market Street, where such services had previously been restricted.
For its general robotaxi service, Waymo now operates in Phoenix, parts of the San Francisco Bay Area, Los Angeles, Austin and Atlanta.
Tesla began testing a robotaxi service in Austin in June, with human safety supervisors on board. The Elon Musk-led company is also in discussions with San Francisco Bay Area airports. Tesla has permission to operate a paid car service in San Francisco, but not to run a driverless ride-hailing business there.
Tesla does not currently sell vehicles that are safe to use without a person in the car, ready to take over steering or braking at any time.