Sesame, a conversational AI startup and smart glasses maker, has raised a $250 million Series B round and is opening up its beta to a select group of testers, the company announced Tuesday.

The startup, headed by former Oculus co-founder and CEO Brendan Iribe and Ankit Kumar , former CTO of AR startup Ubiquity6 , is working to create a personal AI agent that interacts with users using a natural-sounding human voice. The company plans to embed the personal AI agent into lightweight eyewear that is designed to be worn throughout the day and which users can interact with via voice.

The startup first emerged from stealth in February, when it offered two demos of its technology — AI voices named “Maya” and “Miles.” The voices were soon accessed by more than a million people within the

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