Cursor is the leading 2026 AI-first code editor (VS Code fork) that turns coding into a conversation with powerful agents—Tab autocomplete (28% higher accept rate via RL tuning), Composer for multi-file edits/refactors, full Agent mode for autonomous task handling, subagents/skills, image gen in-editor, semantic codebase search, and bring-your-own-model support (Claude, GPT, Gemini, Grok). CLI modes, cloud handoff, BugBot, and enterprise integrations make it a dev superpower for prototyping, debugging, migrations—trusted by startups to Fortune 500 teams.