Tabnine and Codeium's Windsurf are two prominent AI-powered developer tools that offer sophisticated code generation and AI assistance capabilities. Tabnine provides context-aware completions, real-time suggestions, and personalization features through its adaptive AI models, emphasizing privacy and security with self-hosted options and enterprise-grade deployments. Windsurf offers a credit-based pricing model, advanced chat capabilities through its Cascade system, and robust privacy controls. The choice between the two ultimately depends on deployment flexibility, pricing structure, and the importance of self-hosted solutions.