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LeetCopilot is an AI-powered browser extension for LeetCode that provides context-aware hints, code analysis, live code execution, and real-time visualization to help users master data structures and algorithms. It offers step-by-step hints, auto-generated study notes with pattern tags and spaced-repetition flashcards, and FAANG-style mock interviews to strengthen problem-solving skills. The tool integrates directly into LeetCode with inline hints, one-click test generation, and algorithm visualization, and is freely available as a Chrome extension (also compatible with Edge, Brave, and Opera).
AI named LeetCopilot in February 2026.