The best AI chatbots of 2026: I tested ChatGPT, Copilot, and others to find the top tools ...

I pushed eight free AI chatbots to their limits to find the best AI chatbots of 2026. To explore our top picks, check out ZDNET's chatbot-by-chatbot guide.

Smart rings promise better physical and mental health, but do they work? I tested three of them

All three rings operate on a similar basis. They track movement with 3-D accelerometers, measure blood oxygen levels and ...