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World Cup gets set for pair of blockbuster semi-finals
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Sinner enjoying 'very rare' Wimbledon triumph
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Venezuela quake death toll rises to 4,490
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England open door to Flower return after McCullum axed as Test coach
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McGregor says knee fine before first-kick injury, vows return
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South Korea's Tom Kim wins Scottish Open to end three-year title drought
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Hundred heroine Bhatia says its's 'unbelievable' to be on Lord's honours board
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'It's amazing': Sinner revels in Wimbledon glory after Zverev battle
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Irrepressible Sinner outlasts Zverev to win second straight Wimbledon title
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Fresh attacks hit Iran, Kuwait as Tehran and US square off over Hormuz
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Ryu defeats Henderson in play-off to win back-to-back majors in Evian
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Argentina football great Rattin dies at 89
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Spain ex-PM draws criticism with 'xenophobic' remark on French team
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Argentina great Rattin dies at 89
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Israel elections to be held on October 27: parliament
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Bellingham drags England into World Cup semis but Tuchel demands more
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Zelensky orders new PM in major government reshuffle
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Pogacar calls for cycling calendar overhaul due to heatwave
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Van der Poel stays calm in the heat to win Tour de France stage nine
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Van der Poel wins shortened Tour de France ninth stage
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Iran declares Hormuz strait closed, US military insists traffic flowing
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McCullum sacked as England Test coach but retains white-ball role
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Marc Marquez cruises to Germany MotoGP victory, enters title race
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Bhatia first woman to score Lord's Test century as India run riot
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Mladenovic and Guo win Wimbledon women's doubles title
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'Insane heat': Durbridge calls for earlier Tour de France starts
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McCullum stands down as England Test cricket coach
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McCullum stand downs as England Test cricket coach
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Marc Marquez cruises to Germany MotoGP Grand Prix victory
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India's Bhatia becomes first woman to score Lord's Test century
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Ukraine's Zelensky orders government reshuffle, new PM
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India's Bhatia in sight of becoming first woman to score Lord's Test century
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Iran, US trade more strikes as fighting escalates
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Нуша Аубель і Потсдам: довіра втрачена
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Noosha Aubel and Potsdam: The trust placed in her has been squandered
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努莎·奧貝爾與波茨坦:先前的信任已蕩然無存
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US senator and Trump ally Lindsey Graham dies aged 71
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Evacuees allowed to return home after deadly wildfire in Spain stabilises
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US-Iran strikes: latest developments
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Senegal part ways with coach Thiaw after World Cup exit
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South Korea issues first emergency heatwave warning under new rating system
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McGregor 'destroyed' in 69 seconds on UFC return from five-year layoff
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US senator and Trump ally Lindsey Graham dies age 71
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Hundreds return home as deadly Spain wildfire nears control
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England, Argentina to renew bitter rivalry in World Cup semi-final
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Argentina's Scaloni says England World Cup semi 'just a football game'
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In Sicily, drones at work to predict volcanic eruptions
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Argentina know how to suffer, says Alvarez after Swiss World Cup test
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McGregor loses in 69 seconds on UFC return from five-year layoff
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Iran strikes Gulf neighbours after new US attacks
Musk defends AI ambitions as IPO reveals trouble
Elon Musk insists that his artificial intelligence venture xAI remains a serious competitor, pushing back against mounting doubts after revelations that the supercomputing facilities built to power his own AI models are being rented out to a rival.
"Whether it is the best remains to be seen, but I will never give up. Never," Musk wrote on his X social media platform this week.
The pledge came after SpaceX's newly filed stock market prospectus disclosed that Anthropic -- the AI company behind the Claude chatbot -- will pay SpaceX $1.25 billion a month for access to the Colossus data centers, the vast computing facilities built to train Musk's Grok AI models.
Musk said the arrangement is a short-term deal and that SpaceX, which owns xAI, could reclaim the capacity if needed. "We might need it back at some point," he wrote.
XAI's main product is the Grok chatbot, now in its fourth generation, which is built into the X platform and competes with ChatGPT and Claude across text, image and video generation.
It has also landed a Pentagon contract worth up to $200 million alongside rivals including Google and OpenAI.
Built quickly, the Colossus facilities in Memphis have been a source of controversy, after xAI installed dozens of natural gas turbines to power the site -- drawing protests from civil rights groups who said it worsened air pollution in a predominantly Black neighborhood.
The deal with Anthropic has fueled questions about xAI's competitive standing.
The IPO filing revealed that xAI and social media platform X -- formerly Twitter, and merged with xAI last year -- posted an operating loss of $6.4 billion on total revenue of $3.2 billion.
More than 50 researchers and engineers have left since SpaceX absorbed xAI in February, with departures hitting teams working on Grok's coding, voice features, and the infrastructure used to build new frontier models.
Musk in March said he was rebuilding the company "from the foundations up."
XAI's Grok has also courted controversy, after the chatbot generated nonconsensual explicit deepfakes that spread across the X platform -- prompting regulatory investigations in the UK and EU and a French police raid on X's Paris offices.
- Rocky years ahead -
Musk urged patience, comparing xAI's trajectory to SpaceX's own rocky early years.
"SpaceX had achieved nothing of note after 3 years and was written off as dead after 6 years," he wrote. "Let's see where things stand 3 years from now."
SpaceX is targeting a valuation of as much as $2 trillion in an IPO expected next month, anchored by Musk's pledges to build data centers in space and settle humans on Mars.
Anthropic and ChatGPT-maker OpenAI are also preparing for their own public offerings.
The broader question of whether eye-watering AI spending will ever pay off is also dogging Meta.
Chief executive Mark Zuckerberg told shareholders Wednesday the company could pivot to selling cloud computing services if it ends up with more data center capacity than it needs.
Meta has projected capital expenditure -- primarily for AI data centers -- of between $125 billion and $145 billion this year, even as its AI offerings have so far struggled to gain traction.
T.Khatib--SF-PST