Siri debuted in 2011 on the iPhone 4S as the first widely used voice assistant. Alexa launched in 2014 with the Echo, popularizing voice-controlled smart home devices. ChatGPT, built on GPT-4, launched in late 2022 and reached 100 million users by January 2023. Google introduced Gemini in 2024 as a major overhaul of its AI…
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