DeepSeek, a new chatbot, has gained popularity by becoming the top app in global app stores, challenging giants like OpenAI's ChatGPT.DeepSeek is free, open source, and offers a cost-effective alternative to models like ChatGPT.OpenAI and Nvidia publicly comment on DeepSeek, while the Australian government raises privacy concerns about the AI disruptor.DeepSeek faces challenges such as cyberattacks and doubts about its longevity in the US market.