ChatGPT (OpenAI) launched in November 2022, added GPT-4 in 2023, reached about 122 million daily active users by early 2025, and offers a free GPT-3.5 tier plus ChatGPT Plus at $20 per month and an Enterprise tier introduced in 2023. Google Bard launched in 2023, evolved from LaMDA to PaLM 2 and Gemini by 2025,…
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