Watch the 6 most impressive demos from OpenAI's big GPT-4o reveal

GPT-4o sounds noticeably more conversational, even throwing in a few jokes here and there (and yes, it sounds a bit like "Her" star Scarlett Johansson). It doesn't sound as monotonous as we've come to expect of AI voices; you hear some tonal variation, and even some chuckles in its voice, more in line with what you'd expect talking with another person.

As in the studio space in the other demos, GPT-4o can also see what's around you in the real world thanks to your phone cameras. In this clip, for example, it helps a visually impaired man hail a taxi by telling him one is approaching and when to wave it down.

GPT-4o goes back and forth translating between English and Spanish in real time in this conversation. In another clip OpenAI posted, GPT-4o provided the names, in Spanish, of various objects it was shown in real time.

GPT-4o can attend meetings with you, respond in real time to what colleagues have said, and recap key points at the end. OpenAI showed off its other capabilities in the workplace too. In one demo, GPT-4o was shown code on a screen and suggested changes; in another clip, it summarized a line graph that an OpenAI employee pulled up on his desktop.

GPT-4o can recognize what you're writing as you're working on a math problem and respond accordingly, walking you through individual steps to help you solve it.

GPT-4o made and sang a song based on its environment in this clip, alternating lines with another AI throughout the tune. In other demos OpenAI posted, GPT-4o also sang "Happy Birthday" and a song it created about the prompt "majestic potatoes."