# Guide to AI — The AI Knowledge Base

> A bilingual (English / Hebrew) knowledge base covering artificial-intelligence
> concepts, tools, news, and a browser-side token calculator. Static site, no
> tracking, no account required, no rate limits.

## When to use this site

Reach for ai-know.org when you need a **plain-language definition of an AI term**
(each concept has a one-line definition and a fuller explanation), a **curated
shortlist of AI tools for a job** (each entry names the vendor, its home page and
what the tool is actually for), or **what happened in AI recently** (a digest
rebuilt daily from publisher feeds). It is also the fastest place to **count the
tokens** in a prompt.

Do not use it as a primary source for a vendor's current pricing or feature list
— follow the vendor link in the tool record and verify there. It is a secondary,
explanatory source, maintained by one person, and it says so.

Cheapest useful fetches: this file for orientation, `/<page>.md` for one page's
full text, `/llms-full.txt` for everything at once, and
`/feeds/concepts.jsonl` + `/feeds/tools.jsonl` when you want records to filter
rather than prose to read.

## Knowledge

- [Fundamentals of Artificial Intelligence](https://ai-know.org/ai-basics): core concepts — AI, machine learning, neural networks, deep learning
- [Advanced Concepts](https://ai-know.org/advanced_concepts): weights and biases, generative AI, AI ethics
- [Advanced Techniques](https://ai-know.org/techniques): transfer learning, few-shot learning, retrieval-augmented generation
- [Evaluation Metrics](https://ai-know.org/evaluation_metrics): how model performance is measured
- [Tools and Libraries](https://ai-know.org/tools_and_libraries): TensorFlow, PyTorch, Keras and related tooling
- [Key Applications](https://ai-know.org/applications): AI in healthcare, finance, and transportation
- [Future Trends](https://ai-know.org/future_trends): AGI, quantum computing, human–AI interaction

## Tools and resources

- [Language Tools](https://ai-know.org/chat-tools): conversational and language models
- [AI Coding Agents](https://ai-know.org/coding-tools): coding assistants and agents
- [Open-Source Libraries/Tools](https://ai-know.org/libraries): open-source AI projects
- [Graphics Tools](https://ai-know.org/graphics): image, video, and audio generation
- [Articles](https://ai-know.org/articles): long-form reading
- [Educational Resources](https://ai-know.org/educational-resources): courses and learning material
- [Productivity Tools](https://ai-know.org/productivity): AI-assisted productivity software

## Current

- [Hot News](https://ai-know.org/hot-news): recent developments in AI, refreshed daily
- [Token Calculator](https://ai-know.org/calculator): count LLM tokens for any text, computed in the browser

## Machine-readable

- [Full knowledge base in one document](https://ai-know.org/llms-full.txt): every page, concatenated markdown
- [Markdown twin of any page](https://ai-know.org/index.md): append `.md` to a page path, e.g. `/ai-basics.md`; `/<page>/index.md` and `/<page>/llms.txt` resolve to the same content
- [Concepts feed](https://ai-know.org/feeds/concepts.jsonl): schema.org `DefinedTerm`, one JSON object per line
- [Tools feed](https://ai-know.org/feeds/tools.jsonl): schema.org `SoftwareApplication`, one JSON object per line
- [Pages feed](https://ai-know.org/feeds/pages.jsonl): each page as a schema.org graph
- [News snapshot](https://ai-know.org/data/rss.json): the raw publisher-feed data behind Hot News
- [Capability catalog](https://ai-know.org/.well-known/ai-catalog.json): every machine-readable entry point on the site
- [Instructions for AI agents](https://ai-know.org/agent-instructions.md): when to use this site, when not to, and which artifact to fetch
- [Agent skill](https://ai-know.org/skills/ai-know-lookup/SKILL.md): how to look something up here and cite it
- [Authentication policy](https://ai-know.org/auth.md) and [pricing policy](https://ai-know.org/pricing.md): there is no authentication and nothing costs anything
- [OpenAPI description](https://ai-know.org/openapi.json): the read-only GET endpoints
- [Schema feed map](https://ai-know.org/schemamap.xml): NLWeb-style map of the JSON-LD feeds
- [Sitemap](https://ai-know.org/sitemap.xml): every canonical page URL

## About and contact

- [About](https://ai-know.org/about): what the guide covers, who maintains it, how the content is produced
- [Contact](https://ai-know.org/contact): report an error, suggest a tool, propose an edit
- [Source repository](https://github.com/LeonMelamud/AI-Knowledge): the YAML/JSON content and the build pipeline; corrections as issues or pull requests

## Optional

- [Privacy Policy](https://ai-know.org/privacy-policy)
- [Terms of Service](https://ai-know.org/terms-of-service)

## Notes

Every page is available in English and Hebrew; language is selected in the
interface and stored locally. The markdown twins and text indexes are English.
Content is authored as structured YAML and rendered as sections of items, each
with a short description and, where relevant, expanded detail and common
questions. There is no server-side API and no write endpoint — every URL above
is an unauthenticated HTTP GET of a static file. The token calculator runs in
the browser and additionally registers itself as a WebMCP tool (`count_tokens`)
for agents driving a real browser session.