AI concepts,
clearly explained.
A free documentation hub for the ideas behind modern AI. Each concept covers what it is, how it works, the trade-offs, when to use it, and the common pitfalls.
Foundations
Large language models (LLMs)
Models trained to predict the next token of text, which turns out to be a powerful way to read, write, and reason over language.
Tokens and context windows
LLMs read and write in tokens, and they can only consider a limited window of them at once. This shapes cost, latency, and what fits.
Embeddings
Numeric representations of text (or images) that place similar meanings close together, enabling search and retrieval by meaning.
Building with AI
Retrieval-augmented generation (RAG)
Giving an LLM relevant information at query time by retrieving it from your own data, so answers are grounded and current.
Fine-tuning
Further training a model on your own examples to change its behavior, style, or format, rather than its knowledge.
AI agents
Systems where an LLM plans and takes actions through tools in a loop, rather than producing a single response.
Prompting
How you instruct a model. Clear role, context, output spec, examples, and constraints get dramatically better results.
Quality & evaluation
Evaluations (evals)
How you measure whether an AI system is good enough, before and after you ship it.
Hallucinations
When a model produces fluent, confident output that is wrong or fabricated. A core risk to design around.
Operations
Deploying AI to production
Turning a working prototype into a reliable, observable, and safe system real users depend on.
Inference cost and latency
What it costs and how long it takes to run a model, and the levers that control both.
AI adoption in a business
How organizations move from experiments to durable value with AI, and where it usually goes wrong.
Responsible AI
AI governance
The policies, roles, and controls that keep AI use safe, compliant, and aligned with the organization.
AI and privacy
Handling personal and confidential data responsibly when building with AI tools and models.
Keep exploring
Related AI tools
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Understanding into working systems.
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