DeepSeek

DeepSeek is a free, open-weight AI chat assistant with strong reasoning and coding abilities, accessible via web app and low-cost API. It offers free conversational AI with the flagship DeepSeek-V4 model, providing top-tier reasoning and enhanced agent capabilities. Users can chat on the web or via mobile app, while developers can integrate via API. The platform also includes various open-weight models for research and coding, such as DeepSeek R1, V3, Coder V2, and more. Suitable for developers, researchers, and solopreneurs needing a powerful, free chatbot for reasoning tasks, coding assistance, or building AI applications via API. Typical use cases include coding help, research queries, and custom AI tool development.