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Elon Musk’s xAI launches Grok 4 alongside a $300 monthly subscription

Elon Musk’s AI company, xAI, late on Wednesday released its latest flagship AI model, Grok 4, and unveiled a new $300-per-month AI subscription plan, SuperGrok Heavy. Grok is xAI’s answer to models like OpenAI’s ChatGPT and Google’s Gemini, and can analyze images and respond to questions. In recent months, Grok has become more deeply integrated into Musk’s social network, X, which was recently acquired by xAI. However, that has also put Grok’s misbehavior front and center for millions of users.

Topics: ai grok heavy model xai

Dyson's cordless vacuum sucks up all the dirt and debri in my home - and it's 25% off

If you've been looking to buy a cordless vacuum, now is a great time to do so: The excellent Dyson V15 Detect Plus Cordless Vacuum -- the one with a laser that can reveal microscopic allergens and measure how many particles it's picking up -- is currently $570 at Amazon, on the second day of Prime Day. Also: The best Amazon Prime Day deals live now That's a $180 savings on one of Dyson's premium (and popular) vacuum cleaners. This isn't the best price I've seen for this vacuum (it was on sale

An ambitious vision of a city built from lava

Venice, Italy CNN — Erupting from fiery volcanoes, lava has historically been an uncontrollable force that destroys buildings and neighborhoods in its wake. But what if that force could instead be redirected and harnessed to create whole cities? An ambitious project from Icelandic firm s.ap arkitektar, presented at this year’s Venice Architecture Biennale (running until November 23), proposes just that. Whereas lava naturally cools on the landscape to become volcanic rock such as basalt, “Lava

5,000-Year-Old Rock Carving Is Among the Oldest Known Depictions of an Ancient Egyptian Ruler

An ancient rock engraving in the Lower Nile Valley may offer a rare glimpse into the origin of Egyptian kings. The art panel depicts an elite individual with features resembling those of early Egyptian rulers, from the very beginning of political unification across Egypt. Around 6,000 years ago, Egypt underwent a dramatic political transformation, ultimately leading to the formation of the Egyptian state under the first pharaoh, Narmer, around 3100 BCE. Researchers still know relatively little

Hot deal: First major price drop on the best smart ring you can buy

Rita El Khoury / Android Authority In an intriguing Prime Day development for tech enthusiasts, the Oura Ring 4 is available at a significant discount. For us, this wearable is the best smart ring you can buy, is being offered at an attractive price for a limited time. The Oura Ring 4 is now available for $296.65, down from its usual $349. This represents a 15% discount and the first real one of any note since it launched last year. It’s an excellent opportunity for those interested in health t

Learn how to avoid the pitfalls that stall startup fundraising at TechCrunch All Stage on July 15

There’s no shortage of capital out there, but there’s even less room for error. Join a powerhouse panel at TechCrunch All Stage on July 15 in Boston for “Fundraising Mistakes That Will Kill Your Round, and How to Avoid Them.” This Scale Stage breakout session is built specifically for early-stage founders who want to sidestep the pitfalls that slow or even sink their raise. From pre-pitch prep to post-meeting follow-through, this session will give founders a real-world look at what works — and

Astro is a return to the fundamentals of the web

After migrating several projects from WordPress to Astro, I've become a massive fan of this framework. What is Astro? Astro is a web framework that came out in 2021 and immediately felt different. While most JavaScript frameworks started with building complex applications and then tried to adapt to simpler sites, Astro went the opposite direction. It was built from day one for content-focused websites. The philosophy is refreshingly simple. Astro believes in being content-driven and server-fi

This preorder offer on the new Nothing Phone 3 is my favorite Prime Day mobile deal

Prakhar Khanna/ZDNET Amazon Prime Day runs from July 8-11, but one of the best mobile offers I've seen is open to all. That's right -- you don't need to be a Prime member to snag these savings, and this smartphone is already under $1,000. The new Nothing Phone 3 just launched this month, and Amazon already has a tempting preorder offer. Also: The best Prime Day tech deals If you preorder the Nothing Phone 3 on Amazon, you can scoop up the 512GB model for $799. That's a $100 discount on the 1

EcoFlow WAVE 3 Portable AC drops to new all-time low (no Prime subscription needed!)

Summer is here, and I am definitely starting to feel it. Especially during my weekend adventures, when I am out there in the sun pretty much all day. If you’re looking for a portable AC, the EcoFlow WAVE 3 is among the best ones out there, but it is also really pricey. If you’ve been wanting one, today is your chance to get it at a $450 discount, bringing the price down to a new record low. Buy the EcoFlow WAVE 3 Portable AC for $849 ($450 off) This offer is available from Amazon. The great thi

Amazon Moves Fast, Roborock Qrevo S5V Is 40% Off Barely a Week After Hitting the Market

Roborock has become the most premium brand out there in the robot vacuum market with premium models like the Saros Series that fetch over $1,500. The company also does a great job of offering edge-of-the-time technology at a more affordable price for the masses: That’s exactly what you’ll experience with the new Qrevo S5V which just landed in stores and is available today in an incredible Prime Day bargain. Just a week after its release, Amazon is marking down this model 40% for Prime shoppers,

A Fast-Rising Gaming YouTuber Is an AI Construct, Not a Human

With 2.57 million subscribers and more than 800 million views, a YouTuber named Bloo is swiftly becoming one of the biggest gaming personalities in the biz. But unlike his human peers, this blue-haired vlogger is a cartoonish AI-powered avatar — perhaps the clearest sign yet of AI's deep and industry-shaking inroads into the world of entertainment and influencers. In an interview with CNBC, Bloo's creator, Dutch YouTuber and AI enthusiast Jordi van den Bussche, said that he decided to unleash

Topics: ai avatar bloo den van

Inertial forces (indirect terms) in problems with a central body

Gravitational systems in astrophysics often comprise a body – the primary – that far outweights the others, and which is taken as the centre of the reference frame. A fictitious acceleration, also known as the indirect term, must therefore be added to all other bodies in the system to compensate for the absence of motion of the primary. In this Research Note, we first stress that there is not one indirect term but as many indirect terms as there are bodies in the system that exert a gravitationa

If You’re a Prime Member, This Samsung 990 EVO Plus SSD Now Costs Peanuts on Amazon

Prime Day has finally come and with it special bargains exclusive to Prime members. This year’s discounts on internal SSDs are especially impressive: Among the top-selling offers, the Samsung 990 EVO Plus SSD ranks as a best-seller with an incredible 4.8 out of 5 stars from over 5,000 reviews. That kind of history speaks volumes and now it’s available at an all-time low price. The Samsung 990 EVO Plus 2TB internal SSD now costs only $113, down from its usual price of $176. This 36% discount is

Best Robot Vacuums We've Tested (July 2025)

Each robot vacuum we consider for recommendation gets put through its paces in our test lab in Louisville, Kentucky. In addition to test floors where we run our controlled pickup tests, we monitor each robot vacuum in a special test room filled with mock furniture to gauge how well it navigates around common obstacles. Past that, we check each robot vacuum's ability to gobble up pet hair without getting clogged or leaving loose strands behind, we consider mopping capabilities, and we check to se

Show HN: I built a tool to solve window management

Supported OS: Windows 10/11. Includes lifetime bug fixes and security updates. 30 day risk free guarantee. Limited Time Introductory Pricing! $ 29 $20, includes one year of all other types of updates. Algorithm, feature, etc. $ 59 $40, includes three years of all other types of updates. Select option on checkout page. First 3 to purchase get an additional 50% off and an additional year of updates. The next 10 to purchase get an additional 25% off and an additional year of updates. The n

The Walking Dead is coming to Dead by Daylight

Play as Rick Grimes, Michonne, or Daryl Dixon as you try to escape the Trials of The Entity. Behaviour Interactive never misses an opportunity to bring great crossover content to its crown jewel multiplayer survival game, Dead by Daylight. The latest chapter will bring major characters and set pieces from the world of AMC's The Walking Dead to the game. New survivors enter the fold, as players will be able to select from two iconic Walking Dead characters. You could choose to play as Rick Grim

The 181 best Prime Day 2025 deals that we found

Prime Day, Amazon’s four-day thunderdome of exclusive deals, is here. Outside of Black Friday and Cyber Monday, we anticipate this to be the best moment of the year to score discounts on headphones, laptops, TVs, gaming gear, and really anything else that might be on your wishlist — or someone else’s. We sorted through thousands of deals, ultimately narrowing it down to including products we’ve tried (many of which we’ve reviewed) and can vouch for. To repeat, there will be four — count ’em — f

Show HN: I built a tool to solve window management once and for all

Supported OS: Windows 10/11. Includes lifetime bug fixes and security updates. 30 day risk free guarantee. Limited Time Introductory Pricing! $ 29 $20, includes one year of all other types of updates. Algorithm, feature, etc. $ 59 $40, includes three years of all other types of updates. Select option on checkout page. First 3 to purchase get an additional 50% off and an additional year of updates. The next 10 to purchase get an additional 25% off and an additional year of updates. The n

Memstop: Use LD_PRELOAD to delay process execution when low on memory

Memstop A lightweight LD_PRELOAD shared object that delays process execution when system memory is critically low. Memstop monitors available memory and waits until a configurable percentage of memory becomes available before allowing the application to start. Purpose Memstop is designed to prevent crashes caused by memory exhaustion in parallel processing systems. It can be particularly useful in: Parallel build systems (like make -j ) where you want to prevent the build from failing due to

The 180 best Prime Day 2025 deals that we found

Prime Day, Amazon’s four-day thunderdome of exclusive deals, is here. Outside of Black Friday and Cyber Monday, we anticipate this to be the best moment of the year to score discounts on headphones, laptops, TVs, gaming gear, and really anything else that might be on your wishlist — or someone else’s. We sorted through thousands of deals, ultimately narrowing it down to including products we’ve tried (many of which we’ve reviewed) and can vouch for. To repeat, there will be four — count ’em — f