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Nvidia on Tuesday rejected Chinese accusations that its data center GPUs for artificial intelligence include a hardware function that could remotely deactivate the chips, which is commonly called a "kill switch." "NVIDIA GPUs do not and should not have kill switches and backdoors," wrote Nvidia's Chief Security Officer David Reber in a blog post on Tuesday. The blog post comes after the Cyberspace Administration of China said last week that it needed Nvidia to provide documents about what it called security vulnerabilities in the H20, Nvidia's data center AI chip intended for the Chinese market. The regulator specifically mentioned "backdoor" security risks, according to the New York Times.

The rift between Moscow and Washington looks set to deepen after U.S. President Donald Trump said Tuesday that Russia’s economy “stinks” and that lower oil prices will hammer President Vladimir Putin’s oil-funded war machine. “Putin will stop killing people if you get energy down another $10 a barrel. He’s going to have no choice because his economy stinks,” the president told CNBC’s “Squawk Box.” Read more: cnb.cx/41kLBUA

OpenAI on Tuesday released two open-weight language models for the first time since it rolled out GPT-2 in 2019. The text-only models are called gpt-oss-120b and gpt-oss-20b, and are designed to serve as lower-cost options that developers, researchers and companies can easily run and customize, OpenAI said. An artificial intelligence model is considered open weight if its parameters, or the elements that improve its outputs and predictions during training, are publicly available. Open-weight models can offer transparency and control, but they are different from open-source models, whose full source code becomes available for people to use and modify.

Roku announced Tuesday it's launched Howdy, a commercial-free streaming service that costs $2.99 a month, in a shift for the company that's long been know for free, ad-supported viewing. The streaming platform is expected to feature 10,000 hours of movie and TV content from Lionsgate, Warner Bros. Discovery and FilmRise, as well as its own, exclusive programming known as Roku Originals. The service is available across the U.S. beginning Tuesday. "With the launch of Howdy, Roku is making beloved content from our catalog accessible to an even bigger audience," said Johnny Holden, chief revenue and strategy officer at Radial Entertainment, the parent company of FilmRise, in a press release.

The U.S. should deploy a small nuclear power plant to the surface of the moon before China and Russia are able to do so, the interim head of NASA has told the space agency's staff. NASA should be ready to launch a reactor to the lunar surface by the first quarter of fiscal year 2030, Transportation Secretary Sean Duffy, who is serving as the space agency's acting administrator, said in a directive to NASA dated July 31. This would work out to late 2029. China and Russia are aiming to deploy a reactor to the moon by the mid-2030s to power a joint base, officials in Moscow and Beijing have said. The first country to deploy a reactor on the moon "could potentially declare a keep-out zone which would significantly inhibit the United States from establishing a planned Artemis presence if not there first," Duffy warned NASA. The Artemis mission is NASA's lunar exploration program, which was first announced in 2017.

Axon Enterprise's stock popped 14% after the TASER maker surpassed Wall Street's estimates and boosted its guidance due to robust demand for its security solutions. "Demand for new technology from our customers is accelerating, and it's outpacing even my most optimistic expectations," said CEO Rick Smith on an earnings call with analysts. "There's now one breakout product driving conversations. It's everything." The security solutions company also hiked guidance for the year, saying it now expects revenues of $2.65 billion to $2.73 billion. That's up from prior revenue guidance of $2.60 billion to $2.70 billion.

Palantir shares, which have more than doubled in 2025, soared on Tuesday morning after the defense technology company delivered a knockout punch to investors betting against the stock. “This company is dramatically undervalued here. It goes to $200. Whether it goes to $200 next week or tomorrow, I don’t know. But it’s going to $200,” CNBC’s Jim Cramer said on “Squawk on the Street.” “Going to $200” represents nearly 25% upside to where shares closed on Monday at roughly $160.66 each, ahead of the company delivering ultra-high growth and huge margins. Palantir is the kind of stock that should not be held to traditional valuation metrics, Cramer said, which are off the charts at more than 90 times estimated sales of $4.2 billion for the next 12 months.

Mo Gawdat, former chief business officer at Google X, the company's innovation lab, says AI is likely coming for your role — whether you're in the C-suite or an entry-level worker. The idea that artificial intelligence will create jobs is "100% crap," Gawdat said Monday on the "Diary of a CEO" podcast, using his own AI startup, Emma.love, as an example. He and two other software experts built the app with the help of AI, a project that would have required "350 developers in the past," he said. Gawdat has worked in tech for over 30 years. He was in the C-suite at Google X for almost five years tackling major problems facing humanity, like energy, climate change and internet access.

Fox Corp. will officially enter the direct-to-consumer streaming game on Aug. 21 when it launches Fox One for $19.99 a month. -While it has Fox Nation and Tubi, Fox has mostly been on the sidelines of streaming compared to its peers. Now it's jumping in and offering the entirety of its live sports and news portfolio that has long been mostly available on broadcast and pay TV. Fox One comes in time for the kickoff of NFL and college football, as well as MLB postseason. -Fox has taken a different approach than its peers to TV and streaming. It offloaded its entertainment assets to Disney in 2019. Since then it often reports stronger earnings, particularly on the advertising revenue front as its content is centered around news and sports -- which beckon the highest ratings -- and free, ad-supported streamer Tubi. -There aren't plans for Fox One to offer exclusive programming either. This content has caused media peers to spend heavily on growing their streaming businesses and waiting out losses until more recently reaching profitability. CEO Lachlan Murdoch doesn't expect high costs associated to Fox One outside of overhead, tech and marketing -- a big contrast from its competitors. -Murdoch also forecasted bundle opportunities for Fox One and other streaming apps, but noted that it will be a thoughtful approach so as not to cause further damage to the pay TV ecosystem. Read more about the news here on CNBC: https://lnkd.in/ef2kVf8q

President Donald Trump said he will "probably not" seek a third presidential term when asked by CNBC on Tuesday. Watch more from the interview: cnb.cx/3JhtmsS