Was ist Cursor? Definition & Kontext
Cursor is a VS Code-based AI code editor that bakes language models into the editing loop — completions, multi-file edits, codebase chat, and autonomous agents.
Cursor is a VS Code fork built around language-model integration. It ships with model-aware autocomplete, a chat panel that knows your codebase, "Composer" for multi-file edits, and Agent mode for long-running autonomous tasks. By 2026 it's the dominant AI-first IDE, with Windsurf and Claude Code as the main alternatives.
What makes it sticky for developers: tight feedback loops (apply, undo, retry), good context scoping (rules files, codebase indexing, file selection), and direct access to frontier models (Claude, GPT, Gemini) via your own API keys or their built-in plan.
It is not the only good option, but it sets the bar most teams compare other tools against.