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Amazon ready to use its own AI chips, reduce its dependence on Nvidia
Amazon is poised to roll out its newest artificial intelligence chips as the Big Tech group seeks returns on its multibillion-dollar semiconductor investments and to reduce its reliance on market leader Nvidia.
Executives at Amazon’s cloud computing division are spending big on custom chips in the hopes of boosting the efficiency inside its dozens of data centers, ultimately bringing down its own costs as well as those of Amazon Web Services’ customers.
The effort is spearheaded by Annapurna Labs, an Austin-based chip start-up that Amazon acquired in early 2015 for $350 million. Annapurna’s latest work is expected to be showcased next month when Amazon announces widespread availability of ‘Trainium 2,’ part of a line of AI chips aimed at training the largest models.
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Ars Live: Our first encounter with manipulative AI
In the short-term, the most dangerous thing about AI language models may be their ability to emotionally manipulate humans if not carefully conditioned. The world saw its first taste of that potential danger in February 2023 with the launch of Bing Chat, now called Microsoft Copilot.
During its early testing period, the temperamental chatbot gave the world a preview of an "unhinged" version of OpenAI's GPT-4 prior to its official release. Sydney's sometimes uncensored and "emotional" nature (including use of emojis) arguably gave the world its first large-scale encounter with a truly manipulative AI system. The launch set off alarm bells in the AI alignment community and served as fuel for prominent warning letters about AI dangers.
On November 19 at 4 pm Eastern (1 pm Pacific), Ars Technica Senior AI Reporter Benj Edwards will host a livestream conversation on YouTube with independent AI researcher Simon Willison that will explore the impact and fallout of the 2023 fiasco. We're calling it "Bing Chat: Our First Encounter with Manipulative AI."
Mazda gives the 2025 CX-50 a big efficiency boost to 38 mpg with hybrid power
Mazda won itself a lot of fans over the years with the sharp styling and attention to detail of its engaging-to-drive vehicles. But in recent years its cars have been left behind by rivals when it comes to fuel efficiency. As a small automaker facing daunting development costs, it decided to partner with Toyota on advanced technologies, including a battery electric vehicle due by 2027. A more immediate benefit has been access to Toyota's hybrid powertrains, one of which can now be found inside the $33,970 2025 Mazda CX-50 Hybrid, which we've driven ahead of it going on sale this month.
Engineering stuffOpen the hood, and instead of one of Mazda's Skyactiv engines, you find one of Toyota's 2.5 L naturally aspirated Atkinson cycle engines, which drives the front wheels together with two electric motors (one is really the integrated starter motor) via a continuously variable transmission. At the rear, a third electric motor powers the rear wheels when necessary. The front traction motor provides 118 hp (88 kW), the rear motor can add an extra 54 hp (40 kW), and total output is rated at 219 hp (163 kW) and 163 ft-lb (220 Nm).
It's a handsomely styled vehicle. Credit: Jonathan Gitlin Starting at under $34,000, the base CX-50 is very well-equipped. Credit: Jonathan GitlinIt wasn't exactly a case of shoehorning the new powertrain into the CX-50, but Mazda has had to modify the front frame rails to fit the new engine, transmission, and hybrid motors, and there's a new rear subframe with the rear eAxle, as well as the 0.9 kWh hybrid traction battery, which lives under the rear seat. (This improves the front-rear weight distribution to 55:45, Mazda says.)
Smaller than an Escalade IQ, bigger than a Lyriq: The 2026 Cadillac Vistiq
Cadillac has another new electric vehicle on the way. It's the 2026 Vistiq, a three-row SUV that fills the gap in the American automaker's lineup. It will be the fifth Cadillac to use what until now has been called the Ultium battery platform.
Although parent company General Motors has caught a case of EV regret this year, it has also ironed out the problem it encountered when assembling battery cells into packs and expects to sell at least 200,000 EVs this year. Cadillac's Ultium journey began with the midsize Lyriq, which has since been joined by the compact Optiq, the hand-built, highly exclusive Celestiq, and imminently, the Escalade IQ, which rivals the Hummer EV in weight as a result of its whopping 450-mile range.
The Vistiq conforms to the design language started by the Lyriq. Credit: Cadillac If you're picturing an electric XT6 you've got the right idea. Credit: CadillacThe $77,395 Vistiq drops in between the Lyriq and Escalade IQ, filling the same niche—but electric—as the XT6 does in the gas-powered lineup. The Vistiq has a virtually identical wheelbase to the gas Escalade at 121.8 inches (3,094 mm), but it's a few inches shorter at 205 inches (5,207 mm) long. Yes, this is a large SUV, but it's a three-row Cadillac—what else do you expect?
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There are some things the Crew-8 astronauts aren’t ready to talk about
The astronauts who came home from the International Space Station last month experienced some drama on the high frontier, and some of it accompanied them back to Earth.
In orbit, the astronauts aborted two spacewalks, both under unusual circumstances. Then, on October 25, one of the astronauts was hospitalized due to what NASA called an unspecified "medical issue" after splashdown aboard a SpaceX Crew Dragon capsule that concluded the 235-day mission. After an overnight stay in a hospital in Florida, NASA said the astronaut was released "in good health" and returned to their home base in Houston to resume normal post-flight activities.
The space agency did not identify the astronaut or any details about their condition, citing medical privacy concerns. The three NASA astronauts on the Dragon spacecraft included commander Matthew Dominick, pilot Michael Barratt, and mission specialist Jeanette Epps. Russian cosmonaut Alexander Grebenkin accompanied the three NASA crew members. Russia's space agency confirmed he was not hospitalized after returning to Earth.