An AI-powered tool integrated into development environments that helps programmers write, complete, debug, and optimize code using large language models. Like having an experienced pair programmer who never sleeps, AI code assistants suggest entire functions, explain unfamiliar code, catch bugs before they happen, and translate natural language descriptions into working code. AWS offers Amazon Q Developer (formerly CodeWhisperer), Azure provides GitHub Copilot powered by OpenAI, GCP has Gemini Code Assist, and OCI offers OCI Generative AI code completion — each trained on vast code repositories and documentation.
A developer building a REST API types a comment describing what they need: 'Create an endpoint that validates user input, checks for duplicates in the database, and returns a formatted response.' The AI code assistant instantly generates the complete function with proper error handling, input validation, and database queries, saving 20 minutes of manual coding.