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Rivian is betting big on autonomy. The EV maker just held its first "Autonomy and AI Day," showcasing plans for universal hands-free driving. Are they ready to challenge Tesla's Full Self-Driving?

Inside Rivian’s big bet on AI-powered self-driving | TechCrunch Rivian demonstrated the progress it's made, and in the process showed just how far it still has to go to make its cars autonomous.

Does your AI start to hallucinate when you feed it large amounts of text or big documents?

This happens because of something called "Context Window", which is the limit on how much information the model can process at one time.

To stop this from happening, keep these 5 things in mind:

1. Think of the context window as a moving spotlight. As you add more text to the chat, the spotlight moves forward, and everything behind it falls into darkness.

2. AI counts "tokens" (chunks of characters), not words. A complex spreadsheet with lots of numbers and symbols uses up the context window much faster than simple paragraphs of text.

3. While free versions struggle with long threads, "Pro" or "Team" subscriptions usually unlock significantly larger context windows, allowing the AI to analyze hundreds of files at once without crashing.

4. Even if a model can accept a massive document, its reasoning often gets worse as the context fills up. It is safer to break huge tasks into smaller, focused prompts.

5. Hidden formatting in PDFs or code snippets counts toward your limit. Pasting clean, plain text gives the AI more "brain space" to focus on your actual content.

This should make it easier for you to use AI without having to deal with hallucinations.

Looking to upgrade your phone in 2026? Don't let your old device gather dust. CNET explains the right way to recycle or repurpose your old tech, from security cameras to dedicated music players.

Don't Trash Your Old Tech: You Can Recycle Your Phone and Large Appliances Free This is everything you need to know.

Details about the next AirTag have leaked! Reports suggest the "AirTag 2" will feature better range and privacy protections, potentially launching this year. If you're constantly losing your keys, help is on the way.

AirTag 2 details just leaked from a secret iOS 26 build – here are 4 upgrades to expect A new report has revealed upcoming features in Apple’s AirTag 2, which could arrive in 2026.

Smart glasses are inevitable. CNET argues that while the tech is still proving itself, the form factor is already here. Would you wear your apps on your eyes?

Google's Putting It All on Glasses Next Year: My Demos With Project Aura and More The Xreal-made hardware is one element of a three-part launch next year with Warby Parker and Gentle Monster, and lots of upgrades coming to Galaxy XR.