Character AI, developed by @character_ai, has introduced an innovative feature that allows users to create custom AI voices with just 10 seconds of uploaded audio. This advancement is significant as it enables the AI to sound like they have their own personality, making AI voices indistinguishable from human ones. Users who have spent 30 minutes a day with their character for the past year can now enjoy a more immersive experience by interacting with their AI characters, which can now respond with personalized voices. This development is expected to revolutionize AI video and storytelling by providing unique personalities to AI characters through their voices.