Imagine a future where you are never truly alone. Even when your spouse is on a business trip or your children are away at summer camp, you will always have someone (or something) to talk to. In the morning, you could ask the microwave to heat up a bowl of oatmeal. In your car, you could tell your stereo to put on some ’90s music. And when you walk into the office, you could ask your smartphone, “What’s on my calendar today?”

This is increasingly the world the tech industry is building with a bloating portfolio of devices that can react to voice commands — and that the companies will be pitching to you even more in 2019.

The future will be on display next week at CES, a consumer electronics trade show in Las Vegas that serves as a window into the year’s hottest tech trends. Artificially intelligent virtual assistants will take center stage as the most important tech topic, with companies big and small expected to showcase voice-controlled devices like robot vacuums, alarm clocks, refrigerators and car accessories. Most of these products will be powered by Amazon’s Alexa or Google’s Assistant, the two most popular artificially intelligent assistants, industry insiders said.

“A.I. will pervade the show,” said Gary Shapiro, chief executive of the Consumer Technology Association, which owns CES.