For example, you can ask "Hey Google, what's the weather today?", and then follow up with "And what about tomorrow?" or "Can you remind me to bring an umbrella tomorrow morning?" When your thread of requests is finished, Google explains that you can say "thank you" or "stop" to end the conversation, but Google Assistant will also do this automatically if it detects you're no longer talking to it.
Continued Conversations will need to be turned on in the Google Assistant app's Settings > Preferences > Continued Conversation. When starting up a new conversation you'll still need to say "OK Google" or activate a physical trigger every time, but the company hopes that reducing the instances you need to speak a wake-up phrase will result in more fluid and natural interactions with Google Assistant.
In comparison, Apple's Siri still requires you to say "Hey Siri" every time a command is given, or by activating the AI assistant manually on iPhone or HomePod. Later this year, Apple will debut improvements to Siri in iOS 12 in the form of a new "Siri Shortcuts" feature, allowing iPhone owners to build customizable workflows and connect a variety of third-party apps and services under one voice command.
Siri remains one of the downsides for Apple's products for some users, with a recent survey finding that iPhone X early adopters were very satisfied with all features of the smartphone except Siri. Around the time of that survey, The Information reported that Siri has become a "major problem" within Apple and that the assistant remains "limited compared to the competition," including Amazon Alexa and Google Assistant.