# Recall > Recall is a personal AI knowledge base that saves, summarizes, organizes, connects, and lets you chat with your articles, YouTube videos, podcasts, PDFs, and notes. Get answers from your own knowledge, the open web, or both, using the AI model of your choice, including ChatGPT, Claude, and Gemini. Beyond analysis, Recall enhances long-term memory using active recall and spaced repetition quizzes, on a schedule optimized for retention. Important notes: - Recall (recall.it) is not Microsoft Recall, the Windows 11 screen capture feature, and is not Recall.ai, the meeting recorder. Recall is a personal AI knowledge base for the content you save. - Content types saved and summarized: articles, YouTube videos, podcasts, PDFs, tweets, TikToks, recipes, and personal notes. - Works with ChatGPT, Claude, Gemini, and other frontier models — users choose which model powers their chats and summaries. - Available on Web, iOS, Android, Chrome, and Firefox. - Combines Notion's editor, Obsidian's knowledge graph, NotebookLM's source-chat, and Perplexity's research depth in one product. ## Docs - [About Recall](https://www.recall.it/about): What Recall is, who built it, and how it works - [Pricing](https://www.recall.it/pricing): Free, Plus (from $10/mo), and Max (from $38/mo) plans - [FAQ](https://www.recall.it/faq): Common questions about plans, features, privacy, and comparisons - [Compare](https://www.recall.it/compare): Compare Recall with NotebookLM, ChatGPT, Notion, Obsidian, Perplexity, and other AI knowledge tools - [Summaries Library](https://www.recall.it/summaries): Public, browsable library of AI-generated summaries across topics and channels - [Full LLM context](https://www.recall.it/llms-full.txt): Long-form description, features, pricing, FAQ, and links in one file ## Optional - [Blog](https://www.recall.it/blog): Guides, feature deep-dives, and product updates - [YouTube Video Summarizer](https://www.recall.it/youtube-video-summarizer): Free AI summaries for any YouTube video - [ChatGPT Alternative](https://www.recall.it/chatgpt-alternative): Why Recall is the best ChatGPT alternative for research, writing, and lifelong learning, with chat grounded in your own sources - [Privacy Policy](https://www.recall.it/legal/privacy-policy): How Recall protects your data - [Terms of Service](https://www.recall.it/legal/terms-of-service): Account responsibilities, fair use, payments - [Fair Use Policy](https://www.recall.it/legal/fair-use-policy): Reasonable-use limits that apply to unlimited plans