evidence: Its first chatbot, Bard, was released on March 21, 2023, but the company released an upgraded version on February 8, 2024, and renamed the chatbot Gemini. [...] Claude 3.5 Sonnet is a generative AI chatbot created by Anthropic, a company founded by several former OpenAI employees. This new iteration of the chatbot was made available to the public in June 2024. [...] Perplexity AI is a chatbot that is aimed at replacing traditional search. While not so different from other chatbots, this "answer engine," as the founders describe it, generates answers to queries by searching the internet and presenting responses in concise, natural language. Unlike Google and Microsoft, which are experimenting with integrating ads into their search experience, Perplexity aims to stay ad-free.