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Sindhu wins Japan Open to end title drought
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Kyiv hit with deadly strikes after attack on Russian e-commerce giant
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US launches strikes to 'punish' Iran after troops killed
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Skipper Sheehan urges higher level from beaten Ireland
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World Cup moments: Viking row and minnows sparkle
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Spain and Argentina brace for World Cup final
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Trump to bask in World Cup final spotlight
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Faith vs therapy: Inside the Philippine school for exorcists
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Italy confident they can bounce back at Nations Championship
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India probe into stolen donations tests trust in temple finances
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Burnham likely to steer steady ship on UK foreign policy
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Kyiv struck after attack on Russian e-commerce giant
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In a Lebanon museum, 'keys without homes' evoke destruction in south
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Kiss has work cut out at Wallabies as Schmidt bids farewell
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Influencer Andrew Tate and brother arrested in Miami
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Departing Deschamps looks back on 'wonderful' World Cup
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FIFA toasts World Cup triumph as tournament draws to close
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England finish third as Spain and Argentina brace for World Cup final
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All Blacks make strides under Rennie as Springboks loom
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England took first step towards elite nations with France win: Tuchel
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Japan's young guns excite Jones in Nations Championship
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England edge France 6-4 in chaotic World Cup bronze match
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Cuban dissident artist Otero Alcantara lands in US exile
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Erasmus calls Springbok victory over Wales a 'grind'
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Earl double guides England past Argentina after dramatic ending
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Spain's Yamal aims to join elite club of teenage World Cup winners
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Burns rides new dad bounce to brink of British Open breakthrough
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Zelensky mulls army changes as protests rock Ukraine for third day
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Burns leads British Open by two as McIlroy unleashes on 'performative' DeChambeau
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Wenger accepts World Cup hydration breaks split opinion
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Back-to-back World Cup winners: Argentina seek to join elite group
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England World Cup star Rogers set to join Chelsea: reports
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Debutant Williams scores as South Africa thump Wales
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Teenage talent Seixas delighted after 'marvellously tough' Tour de France stage
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Hamilton thanks Ferrari for 'mega' repairs after smashing car
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NY mayor says still mulling Netanyahu arrest during UN meet
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Fox joins 62 club to lead British Open, McIlroy unleashes on 'performative' DeChambeau
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Antonelli wants to lead Verstappen from start in Belgium
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Spain, Argentina tune up for World Cup final in smoggy New Jersey
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McIlroy launches scathing attack on 'performative' DeChambeau antics
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Wimbledon finalist Muchova out for 'a few weeks'
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Wildfire haze hangs over eastern US -- and World Cup final
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Pogacar wins 'unforgettable' Tour de France 14th stage to extend overall lead
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Antonelli pips Verstappen to take pole at Belgian Grand Prix
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Ukrainian strikes on Russian warehouses kill 8, shroud skies in smoke
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Madonna, Cruise lead A-list stars at World Cup final
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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.
M.Betschart--VB