DeepSeek

DeepSeek is an open-weight AI chat assistant developed by 深度求索, offering powerful reasoning and coding capabilities. It provides a free web and app interface for conversational AI, alongside a low-cost API for developers. The platform features state-of-the-art models like DeepSeek-V4, which delivers top-tier reasoning performance and enhanced agent abilities. Core capabilities include deep logical reasoning, code generation and understanding, and multimodal support via models like DeepSeek-VL. It also offers dedicated models for mathematics and coding tasks. DeepSeek fits developers and solopreneurs who need a capable AI assistant for tasks such as debugging, algorithmic problem-solving, and complex analytical work. Typical use cases include code assistance, research support, and building AI-powered applications through its API.