--- title: Guide to AI - The AI Knowledge Base description: A comprehensive bilingual guide to artificial intelligence: AI concepts, tools, hot news, token calculator and more. מדריך מקיף לבינה מלאכותית. canonical: https://ai-know.org/ last-updated: 2026-09-20 site: Guide to AI (ai-know.org) --- # Guide to AI — The AI Knowledge Base > Guide to AI (ai-know.org) is a free, bilingual (English and Hebrew) knowledge base about artificial intelligence: explained concepts, curated tools, a daily news digest and a browser-side token calculator. It is a static site — no account, no tracking, no paywall. Canonical page: https://ai-know.org/ ## Concepts explained - [Fundamentals of Artificial Intelligence](https://ai-know.org/ai-basics/) — Artificial Intelligence (AI), Machine Learning, Neural Networks, Deep Learning, Unsupervised Learning, Supervised Learning - [Advanced Concepts](https://ai-know.org/advanced_concepts/) — Weights and Bias, Generative AI, AI Ethics, Generative Adversarial Networks (GANs), Gradient Descent, Backpropagation - [Advanced Techniques](https://ai-know.org/techniques/) — Transfer Learning, Few-shot Learning, RAG (Retrieval-Augmented Generation), Prompt Engineering, Fine-tuning, Explainable AI (XAI) - [Evaluation Metrics](https://ai-know.org/evaluation_metrics/) — Important Terms in Data Science and Machine Learning, Log Loss, Perplexity, Mean Absolute Error (MAE), Root Mean Squared Error (RMSE), R-squared (R²) - [Tools and Libraries](https://ai-know.org/tools_and_libraries/) — TensorFlow, PyTorch, Keras, Scikit-learn, Hugging Face Transformers, JAX - [Key Applications of Artificial Intelligence](https://ai-know.org/applications/) — AI in Healthcare, AI in Finance, AI in Transportation, Natural Language Processing, Computer Vision, Recommender Systems - [Future Trends in Artificial Intelligence](https://ai-know.org/future_trends/) — Artificial General Intelligence (AGI), AI and Quantum Computing, AI and Human Interaction, AI for Sustainability and Environment, AI Ethics and Regulation ## Tools and resources - [Language Tools](https://ai-know.org/chat-tools/) — ChatGPT, Claude, Gemini, Storm Genie, FinChat, Google AI Studio - [AI Coding Agents](https://ai-know.org/coding-tools/) — Claude Code, Cursor, Windsurf, GitHub Copilot, OpenAI Codex, Gemini CLI - [Open-Source Libraries/Tools](https://ai-know.org/libraries/) — TensorFlow, PyTorch, Scikit-learn, Keras, Hugging Face Transformers, LangChain - [Graphics Tools](https://ai-know.org/graphics/) — Krea, Luma, Pika ai, Runway(Gen-3), LivePortrait, Play AI - [Articles](https://ai-know.org/articles/) — LLM System Architecture, Open Source AI Deep Dive, Generative AI Commons - [Educational Resources](https://ai-know.org/educational-resources/) — GenAI Agents, Understanding & Building LLM Applications, Prompt Engineering with W&B, Amazon Bedrock Workshop, LLM Fine-Tuning Course, Parlance Labs - [Productivity Tools](https://ai-know.org/productivity/) — NotebookLM, Gamma, presentation AI tool, Otter.ai, Grammarly, Jasper, Replika ## Also on this site - [Hot News](https://ai-know.org/hot-news/) — AI developments, rebuilt daily from publisher feeds - [Token Calculator](https://ai-know.org/calculator/) — count LLM tokens for any text, in the browser - [About](https://ai-know.org/about/) — who runs this guide and how the content is made - [Contact](https://ai-know.org/contact/) — how to reach the author ## Frequently asked questions ### What is Guide to AI (ai-know.org)? A free, bilingual (English and Hebrew) knowledge base about artificial intelligence. It covers AI concepts with short and full explanations, curated tools by category, a daily news digest, and a token calculator that runs in the browser. ### Is it free, and does it require an account? Yes, everything is free and there is no account, no login and no paywall. The site is fully static, stores nothing server-side and sets no tracking cookies. ### Who writes and maintains it? Leon Melamud, an AI and cloud architecture practitioner. The content lives as YAML and JSON in the public repository https://github.com/LeonMelamud/AI-Knowledge, so every change is visible in its git history. ### How can an AI agent or LLM consume this site? Start at /llms.txt for the index, or /llms-full.txt for the whole knowledge base as one markdown document. Every page has a markdown twin at the same path with a .md suffix, /schemamap.xml points to schema.org JSON-LD feeds, and /.well-known/ai-catalog.json lists every machine-readable entry point. ### May the content be used to train models or answer questions? Yes. Crawling and quoting are allowed for the major AI crawlers (see /robots.txt), attribution to ai-know.org is appreciated, and the underlying source data is public in the repository. ### How current is the AI news section? The news digest is rebuilt automatically every day from publisher RSS feeds; the raw snapshot an agent can read directly is at /data/rss.json. ## Machine-readable entry points - https://ai-know.org/llms.txt — this index - https://ai-know.org/llms-full.txt — the whole knowledge base as one document - https://ai-know.org/.md — markdown twin of any page - https://ai-know.org/schemamap.xml — schema.org JSON-LD feeds - https://ai-know.org/.well-known/ai-catalog.json — capability catalog - https://ai-know.org/sitemap.xml — all pages - https://github.com/LeonMelamud/AI-Knowledge — source content (YAML/JSON) and build pipeline --- Site index: https://ai-know.org/llms.txt · Repository: https://github.com/LeonMelamud/AI-Knowledge