What Is Cursor AI? The Complete Guide to the AI-Native IDE (2026)

Cursor AI is a VS Code-based AI code editor with Claude, GPT & Gemini built in. TL;DR Cursor AI is an AI-first code editor based on VS Code, built by Anysphere Inc. and co-founded in 2023 by four MIT graduates. Unlike plugins, it runs LLMs like Claude, GPT, and Gemini directly inside the editor — enabling real-time suggestions, autonomous multi-file editing, bug detection, and refactoring without context-switching. Developer teams using Cursor report 20–40% faster feature delivery and 20% fe