AI coding assistants boost developer productivity by offering real-time, context-aware code suggestions and automating routine tasks. Powered by large language models like GPT and Code LLaMA, they understand project context and improve accuracy with static analysis and reinforcement learning. Top tools include GitHub Copilot (contextual code generation), Cursor (chat-driven coding), Amazon CodeWhisperer (AWS-optimized), Tabnine (privacy-focused, on-device), and Codeium (free, multi-language).