A person tests the DeepSeek assistant on January 29, 2025, in Madrid, Spain. The DeepSeek assistant arrived in the App Store on January 11, and has climbed to take the top spot in the Apple Store in the United States, ahead of OpenAI's ChatGPT. DeepSeek is a free-to-use generative Artificial Intelligence (AI) assistant. In addition to answering questions in a conversational format, it can browse the web to provide up-to-date answers, summarize text documents quickly, and use reasoning to solve complex problems. 29 JANUARY 2025 Eduardo Parra / Europa Press 01/29/2025 (Europa Press via AP)