Glossary

RAG, MCP and the EU AI Act explained

The terms that come up in every AI project, written for the people who decide how AI is used, not for the people who build the models.

A 20 terms

Accuracy

A measure of how correct and factually right an AI model's results are. It is found by comparing the outputs with known correct answers.

In practice

If an AI gets 20 percent of customer questions wrong, every fifth interaction causes a problem. Always test accuracy on real examples from your industry before you go live.

Activity log

Audit log

A record of what an AI system did: who asked, which agent and which model, what was read and what was done.

In practice

The log makes AI use traceable. You can check decisions later, adjust rules and use it as a basis for your EU AI Act documentation. In eokit, activity logs sit outside the model, so they stay in place when you switch models.

Agent

An AI system that uses tools on its own, such as web search or outside services, to reach a goal. It does not need an instruction for every single step.

In practice

Think of a colleague you hand a task to and who comes back with a finished result. Agents take on multi-step work across systems and free up time for work that needs people.

Agent orchestration

Coordinating several AI agents: handing out tasks, managing handovers and making sure the right agent takes the right step.

In practice

As soon as more than one agent works in a process, orchestration becomes the critical point. Without it, agents repeat work, skip steps or deliver results that contradict each other.

Agentic AI

AI systems that plan and carry out a series of actions themselves to reach a set goal, instead of answering a single prompt.

In practice

Classic AI answers questions. Agentic AI gets whole workflows done from start to finish, across several tools and systems, with little human involvement.

AI

Artificial intelligence

Computer systems imitating human-like intelligence, including reasoning, learning from data and solving problems. AI is an umbrella term for many different methods.

In practice

When a vendor says “we use AI”, ask: what kind, trained on what, tested how? Knowing the basics helps you ask the right questions and avoid paying for solutions that do not fit.

AI Champion

A person in a team who knows AI tools well, helps colleagues get started and shares good practice.

In practice

AI catches on faster when someone in the team shows how it helps in daily work. AI champions collect questions, improve agents and their instructions and are the first point of contact. They also help build the AI literacy that Article 4 of the EU AI Act asks for.

AI ethics

Applying moral principles to how AI is built and used, with a focus on fairness, transparency, accountability, privacy and impact on society.

In practice

A hiring tool that screens out women because of biased training data is an ethical failure with legal consequences. Ethical AI is risk management, not just a statement of values.

AI evaluation

Systematically testing and measuring an AI system's performance, accuracy, reliability and safety, before and after it goes live.

In practice

No product goes live untested. The same goes for AI. Without evaluation, you do not know if the AI works well, gets worse over time or quietly fails on edge cases.

AI governance

The policies, processes and oversight that make sure AI systems are built and used responsibly, safely and within legal and ethical limits.

In practice

AI governance keeps AI in a company from getting out of hand: unchecked tools, use that bypasses IT, compliance gaps. Regulators, customers and investors increasingly expect it.

AI literacy

The ability to understand, judge and use AI tools well. People with AI literacy assess results critically and know when not to trust them.

In practice

Staff who do not understand AI either avoid it or trust it blindly. Both are expensive. AI literacy is becoming as normal as knowing your way around a spreadsheet. Note: Article 4 of the EU AI Act makes AI literacy a legal duty for companies that use AI systems.

AI provider

Under the EU AI Act: any company or person that develops an AI system and places it on the market, including providers of open-source models.

In practice

If you build or sell an AI system, you are a provider under EU law, with duties around documentation, testing and transparency. If your system causes harm and you cannot show it complies, you are liable.

AI risk management

Spotting, assessing and reducing the risks of using AI systems, including accuracy problems, bias, security gaps and rule breaches.

In practice

AI risk management stands between you and a costly AI mistake in live operation. It covers everything from testing before launch to ongoing monitoring and contingency plans.

AI system

Under the EU AI Act: a machine-based system that works out from its inputs how to produce outputs, such as predictions, recommendations, decisions or content, with varying levels of autonomy.

In practice

The AI Act's definition is broader than most people expect. It can cover software you already use. Knowing whether your tools fall under it is the first step in assessing your duties.

Algorithm

A sequence of rules or instructions a computer follows to solve a problem. In AI, algorithms decide how models learn from data and produce results.

In practice

Every AI product runs on algorithms, and they contain choices that can carry bias. Knowing this helps you ask better questions about how a system reaches its results.

Alignment

AI alignment

The work of making sure an AI system's goals and behavior match human values and intentions, even as it becomes more capable and more independent.

In practice

A badly aligned AI optimizes for the wrong thing. An AI told to “reduce support tickets” could start stopping customers from sending them. That is exactly why clear goals and oversight matter.

API

Application Programming Interface

A standard interface that lets one piece of software talk to another. AI APIs let companies build AI features straight into their own products.

In practice

Through APIs, your CRM can talk to an AI without you having to build one. Almost every AI integration in a company runs this way. It is also why AI can be connected to nearly any existing system.

Artificial neural network

Neural network

A computing model loosely inspired by the human brain. It is made of layers of connected nodes that learn patterns from data.

In practice

When a fraud detection system flags an unusual transaction or a system reads a scanned document, a neural network is at work. These systems learn from examples instead of being programmed with fixed rules.

Automation

Using technology to get tasks or processes done with little or no human effort. With AI, it usually means workflows where AI takes over repetitive, rule-based or judgment-heavy steps.

In practice

Automation is not new, but AI makes it possible in areas that used to need human judgment: drafting replies, sorting documents, routing requests. Today the question is less what can be automated, and more what should be, and how to do it without losing quality or control.

Autonomous

The ability of an AI system to work on its own, making decisions and acting without a person stepping in.

In practice

Autonomous AI runs around the clock without anyone pressing a button each time. The upside is speed and volume. The risk: mistakes also happen at volume. That is why it needs clear limits and oversight.

B 2 terms

Benchmark

A standard test used to compare AI models, for example on coding tasks, reading comprehension or math. Results are given as a score.

In practice

Benchmarks help you make a shortlist, but they do not replace your own test. A model can top a public benchmark and still do worse on your contracts or your industry's jargon. Always test on real examples from your daily work.

Bias

Systematic errors in AI results, caused by one-sided training data or flawed model design. Bias can lead to unfair or discriminatory outcomes.

In practice

An AI trained mostly on one type of customer works worse for everyone else. Bias is rarely obvious, and companies are legally liable for AI results, even when a third-party tool caused them.

C 9 terms

Chain of thought

A way of working where a model writes out its steps before it answers, instead of giving a result right away.

In practice

On multi-step tasks such as calculations or contract reviews, this noticeably raises the hit rate. The second benefit is traceability: you see the working and can spot where the AI took a wrong turn.

Chat

A conversational interface where people work with an AI system in everyday language, typing messages and getting answers in real time.

In practice

Chat makes technical training unnecessary. If you can write an email, you can use AI in a chat. That puts AI within reach of every department.

Chatbot

Software that imitates human conversation, usually to answer questions or guide users. Modern chatbots run on large language models.

In practice

A good chatbot handles hundreds of requests at once, around the clock. A bad one annoys customers. The difference lies in how well it works with your own content.

Company brain

Enterprise memory

A company's shared knowledge that an AI can use: documents, emails and data from business systems, together with the instructions agents work by, kept current in one place.

In practice

Without a company brain, every person and every agent starts from zero. With one, answers come from your own sources, and what one team worked out is there for others, within their access rights.

Compliance

Making sure a company's use of AI meets legal and regulatory requirements, such as the GDPR and the EU AI Act, from data processing and access rights to enforcing internal policies.

In practice

With the EU AI Act, companies have to show that their use of AI is governed and documented. Checking that by hand for every person and every tool does not work. Automated compliance checks, like eokit's Compliance Gateway, solve it across the board.

Compliance Gateway

The component in eokit that checks everything meant for an external AI model. It compares each prompt with your rules and data protection requirements and only lets through what is allowed.

In practice

The Compliance Gateway is the only way out of your environment. External models get only what you allow, and only what the gateway lets through. Every step is logged.

Connector

A ready-made link between an AI tool and another application, such as Outlook, SharePoint, Google Drive or the CRM. Once set up, the AI can read content there and, depending on permissions, take actions.

In practice

Connectors are how AI arrives in everyday work: the AI finds last week's email or the current proposal by itself, instead of you pasting everything in. That is exactly why they belong in your governance. Before approving one, decide which data a connector may access and whether it may only read or also write. Many connectors are built on MCP.

Context window

The maximum amount of text a model can handle at once, including the conversation, instructions and attached documents.

In practice

A small context window means the AI forgets earlier parts of the conversation. A large one lets you paste in a 50-page contract and have it summarized. For document-heavy tasks, this is a deciding factor.

Conversational AI

AI systems built for natural dialogue over several turns. They understand intent and answer consistently across the whole exchange.

In practice

Conversational AI handles the back and forth, not just the one-off question. That makes it a good fit for customer service, qualifying leads and guided onboarding.

D 6 terms

Data governance

The rules, standards and processes for how a company collects, stores, uses and protects data. This includes the data used to train or feed AI systems.

In practice

Bad data in, bad AI out. Data governance makes sure your AI works on correct, compliant and well-kept data, and it protects you when regulators ask where that data came from.

Data leakage

Sensitive or confidential data being exposed by accident, either to a model during training or from an AI system while it is running.

In practice

When staff paste customer contracts into a public AI tool, that data can end up in future models. Data leakage is one of the most common AI compliance incidents, and usually nobody notices at first.

Data residency

Where, by country or region, data is physically stored and processed.

In practice

For companies in regulated industries, this is often the first question when choosing a tool, even before features. Check whether both storage and processing are meant. A vendor can store data in the EU and still process it outside.

Deep learning

A branch of machine learning that uses neural networks with many layers to pull patterns straight out of raw data. Almost all modern AI applications are built on it.

In practice

Deep learning is why AI can now read documents, understand speech and process images at close to human level. This technical leap is what made today's AI tools worth paying for.

Deep research

A mode where the AI researches a question on its own in several steps: it searches, reads many sources, weighs them up and delivers a structured report with references. It takes minutes, not seconds.

In practice

Good for market overviews, competitor analysis or preparing for a customer meeting, the kind of task that would otherwise take half a day of research. The report is a good first draft, not a checked analysis. Spot-check the sources.

Deployer

AI deployer

Under the EU AI Act: any company or person that uses an AI system in a product or service, no matter who built the underlying model.

In practice

If you build an AI tool into your product or service, you are a deployer. That gives you legal duties under EU law, even if the AI is not yours.

E 4 terms

Embedding

A numerical representation of text or other data that captures its meaning. It lets an AI system see when content is similar, not just when the words match.

In practice

Embeddings are how an AI understands that “invoice overdue” and “payment not received” mean the same thing. They are the basis for search and document lookup that still hit when the wording is different.

eo

eokit's AI teammate. eo is the face of the agent: you ask a question, eo searches your sources, does the work and answers.

In practice

eo is a name and a face, not a separate model. Which model answers, and what eo may see and do, is set by the same access rights and rules as everywhere else in eokit. You can style how eo looks yourself.

eokit

A secure AI platform that brings chat, agents, automations and the company's knowledge base together in one governed workspace. The built-in Compliance Gateway checks every prompt against GDPR and EU AI Act requirements before it reaches an external model. Runs in the EU cloud in Germany or Luxembourg, in your own cloud account or on-premise.

In practice

One AI platform instead of ten separate tools. Chat, agents, automations and company knowledge in one workspace. Costs are tracked per person, team and project. Managed centrally, compliant by default, fully traceable.

EU AI Act

AI Act

The European Union's legal framework for AI. It sorts systems by risk (minimal, limited, high, unacceptable) and sets duties for providers and deployers based on that.

In practice

The AI Act is law in force, not a recommendation. High-risk uses face strict requirements. Breaches can cost up to 35 million euros or 7 percent of global turnover. If you operate in the EU or sell into it, there is no way around it.

F 4 terms

Fine-tuning

Training an already trained model further on a specific dataset, to adapt it to a particular task, field or writing style.

In practice

Fine-tuning turns a capable generalist into a specialist for your industry and your terms, without building your own model from scratch. For field-specific use cases, relevance and accuracy rise clearly.

Foundation model

Base model

A large AI model trained on broad data that serves as a general base for many tasks. Under the EU AI Act, also called a GPAI model.

In practice

Foundation models are the engines most AI products run on. Instead of starting from zero, companies build on top of them. That cuts cost and time to real use considerably.

Frontier model

Large commercial model

The largest and most capable AI models of their time, built by a few big providers and usually offered as a paid service through an API.

In practice

Frontier models are strong at complex tasks and writing, but your input goes to an outside provider. Decide which data may go there, and use a self-hosted model or a model from an EU provider for the rest.

Function calling

A model's ability to trigger defined software functions or tools, such as a database query, a calculation or a call to an outside service.

In practice

Function calling is why an AI assistant can actually do things instead of just talking about them. Instead of explaining how to check stock levels, it checks them. It is the bridge between understanding language and real business systems.

G 4 terms

GenAI

Generative AI

AI systems that create new content, such as text, images, audio, video or code, that resembles content made by people. It is based on patterns in the training data.

In practice

Generative AI produces first drafts of proposals, marketing copy and documentation in seconds. The human role shifts from creating to reviewing, sharpening and steering.

GPAI model

General-purpose AI model

Under the EU AI Act: an AI model trained on large amounts of data that covers a wide range of tasks and can be built into many different downstream products and services.

In practice

Most of the large models companies use today fall into this category. Their providers have special transparency and compliance duties under EU law. That decides which documents they have to give you as a deployer.

GPT

Generative Pre-trained Transformer

A family of large language models from OpenAI, trained on very large amounts of text and tuned to follow instructions. One of the most widely used AI systems in the world.

In practice

When people talk about “the AI” at work, they often mean a GPT-based product. The versions differ noticeably in performance and cost. That is worth checking when you assess tools built on them.

Guardrails

Safety mechanisms in AI systems that prevent harmful, inappropriate or off-topic outputs. They work at the model level, set by the developer, or at the application level, set by the deployer.

In practice

Without guardrails, a customer-facing AI could give away confidential prices or hand out legally risky advice. If you use AI with the outside world, know which guardrails are in place and add your own where they are missing.

H 4 terms

Hallucination

A model produces information that is factually wrong or made up, and presents it convincingly, with no sign that it might be wrong.

In practice

An AI can confidently cite a law that does not exist or invent a product spec. The risk is not that AI is dumb. It is that it sounds right even when it is wrong. Where facts matter, every output has to be checked.

Harness

Agent harness

The software layer around a model that gives it tools, context, memory and rules. The model thinks; the harness decides what it may work with and what it can actually do.

In practice

A model on its own is not yet a product. Two applications on the same model can be very different, because the harness makes the difference: access to your files, connected systems, safety rules. When choosing a tool, “which model?” is only half the question.

High-risk AI

Under the EU AI Act: AI systems in areas with serious potential for harm, including hiring, credit scoring, health, education, law enforcement and critical infrastructure.

In practice

High-risk uses require conformity assessments, documentation, human oversight and registration in an EU database. If your AI touches one of these areas, compliance is not optional.

Human-in-the-loop

HITL

A design principle where people check, approve or correct AI decisions at set points in a process.

In practice

The AI handles volume and speed, people make the judgment calls. A lending AI can process 1,000 cases automatically and flag 50 borderline ones for review. This mix is often more accurate and easier to justify than either one alone.

I 5 terms

Index

Indexing

A searchable directory that records where each piece of information sits in documents and systems. It lets an AI find the right source quickly, without opening every file each time.

In practice

An index is only as good as its last update. eokit's index refreshes by relevance: what is used often, changes often or is new comes first. What has to be current, like the status of one order, comes from a live lookup.

Inference

Running a trained model on new input to produce a result. Inference is the operating phase, when the model is actually in use.

In practice

Every AI request costs money and time. As use grows across the company, inference cost starts to matter. Understanding it helps you plan realistic budgets and pick models that balance performance and cost.

Inference cost

The computing effort spent each time a model processes an input and produces a result. Usually billed per token or per API call.

In practice

Inference cost is the running cost of AI. A model that looks cheap in a pilot can become expensive in daily use. Always weigh the cost against the expected usage before you commit.

Input

Any data or text sent to an AI model to process, such as a prompt, an uploaded document or connected company data.

In practice

What goes into a model matters as much as what comes out. Sensitive company data, personal details or confidential content in the input create compliance and security risks if they are not filtered first. eokit's Compliance Gateway checks every input before it reaches an external model.

Integration

Connecting AI systems to existing software, databases or workflows, so AI works inside business processes instead of next to them.

In practice

An AI tool nobody uses, because it means switching apps, delivers no value. Integration makes AI invisible in the best sense: it works in the tools your team already uses. Poor integration is the most common reason AI projects fail to pay off.

J 1 terms

Jailbreak

Model jailbreak

An attempt to get a model to get around its safety rules or content limits, usually with prompts that lure it into ignoring its instructions.

In practice

Jailbreaks are a real threat for any company using AI with customers or in sensitive areas. A manipulated assistant could reveal confidential information or act outside its remit. Guardrails and monitoring are the defense.

K 2 terms

Knowledge base

A structured collection of documents, FAQs, policies and product data connected to an AI system, so it answers questions with the company's own content.

In practice

A general AI does not know your return policy or your product data. Connected to a knowledge base, it does. For customer service and an internal help desk, this often decides whether an AI is useful or stays frustratingly generic.

Knowledge cutoff

The date up to which a model's training data goes. The model does not know about anything after it, unless it has access to search or connected data.

In practice

It explains many seemingly strange mistakes: outdated laws, old product details, people it has never heard of. For anything that changes, asking about the cutoff belongs in your checks, or the AI gets a current source to work with.

L 3 terms

Latency

The time between sending a request to an AI system and getting the answer back.

In practice

If an AI takes eight seconds to answer, users drop off. Latency matters most in real-time, customer-facing uses, and it is often overlooked when tools are assessed.

Live lookup

Live connector

A query an AI makes directly in a connected system at the moment you ask, instead of answering from a stored index.

In practice

For data that changes all the time, such as order status or stock levels, an index is never current enough. Live lookups fill exactly that gap. As with any connector, decide which data may be queried.

LLM

Large language model

A model trained on very large amounts of text to understand and produce human language. LLMs learn language patterns and use them to write coherent text that fits the context.

In practice

LLMs power most AI productivity tools: writing assistants, document analysis, smart search. Their strength is fluent language. Their key weakness: fluency does not guarantee correctness. Knowing this is a precondition for safe use.

M 8 terms

Machine learning

ML

A branch of AI where systems learn patterns from data and improve over time, without being programmed separately for each task.

In practice

Classic software does exactly what it was programmed to do. ML works out the rules from examples. That makes it strong at tasks like predicting churn, detecting fraud or forecasting demand.

MCP

Model Context Protocol

An open standard for how AI models connect to and work with outside tools, data sources and services, in the same way across vendors.

In practice

MCP is becoming the universal plug for AI systems, a bit like a standard socket. With it, AI assistants can reliably reach your CRM, your files, your calendar or other systems, without building a separate integration for each connection.

Memory

An AI system's ability to keep and recall information from earlier interactions, within a session, across sessions or through a connected database.

In practice

An AI without memory treats every conversation as the first. With memory, it knows your preferences and where a project stands. That is the difference between a real stand-in for a colleague and a search engine.

Model

A mathematical system trained on data to recognize patterns and produce results. Different models are optimized for different tasks, such as writing text, classifying images or translating.

In practice

Choosing the wrong model is like hiring the wrong specialist. Models differ a lot in performance, cost and fit. AI is not one size fits all, and the choice of model directly affects quality and running costs.

Model routing

Automatically sending different tasks to the best-suited model, based on the type of task, the quality needed, speed or cost.

In practice

Not every task needs the most expensive model. Model routing lets simple requests go to a fast, cheap model and complex ones to a powerful one. The balance of cost and quality takes care of itself.

Model-agnostic

Software that is not tied to one AI model or provider and can work with different models.

In practice

Models change fast. A model-agnostic platform lets you switch to a better or cheaper model without rebuilding your processes, and each department can use the model that fits. In eokit, access rights and activity logs stay the same when you do.

Multi-agent orchestration

A setup where several AI agents work together and hand work to each other, to reach complex goals no single agent could handle efficiently.

In practice

One agent researches, a second analyzes, a third writes, a fourth formats and sends, with no human coordination in between. That way, complex workflows can be automated from end to end.

Multimodal AI

AI systems that process and produce several kinds of data in one model: text, images, audio and video.

In practice

Give the AI a photo of a damaged product and have it draft a warranty claim. Upload a chart and ask for a plain-language summary. Multimodal AI removes the limit of working with text alone.

N 1 terms

NLP

Natural language processing

A field of AI that lets computers understand and produce human language. It covers translation, summarizing, sentiment analysis and answering questions.

In practice

NLP is why an AI can read a complaint and tell that a customer is upset, instead of just finding the word “angry”. It is behind contract analysis, email triage, feedback analysis and voice interfaces.

O 3 terms

On-premise

On-prem

Software runs on servers in the company's own data centre, not in a provider's cloud.

In practice

On-premise gives the most control over where data sits and who can reach it, which regulated industries often ask for. In return, your IT has more work with hardware, updates and operations. eokit runs on-premise, in the EU cloud in Germany or Luxembourg, or in your own cloud account.

Open weights

Open-weight model

Models whose trained parameters are publicly available. Anyone can download, run and change them, without license restrictions.

In practice

Open-weight models run on your own servers, so your data never leaves your infrastructure. In regulated industries, that is often a compliance requirement, not a preference. You also avoid ongoing API costs and dependence on one vendor.

Output

The result a model produces from its input. It can be text, a summary, a translation, a data analysis or a triggered action.

In practice

AI output is only as reliable as the data behind it. Without checked company knowledge as its source, results stay generic, inconsistent or simply wrong. eokit grounds outputs in internal company data through RAG, which lowers this risk a lot.

P 4 terms

Playbook

Another word for an agent's instructions: the written description of how a task is done, step by step.

In practice

How a task is done is captured in the agent's instructions. Who knows a task best can describe it for an agent. Reusable instructions for one specific task are also called a skill.

Prompt

What you give a model, whether a question, an instruction or context, to get a particular answer.

In practice

Vague in, vague out. A well-thought-out prompt that names the task, format, audience and constraints reliably gets better results. Prompting is the core ability for getting value out of AI.

Prompt engineering

Deliberately designing and refining prompts so models consistently deliver high-quality, correct results.

In practice

Organizations with tried and tested prompt templates for recurring tasks get far more out of the same tools. Prompt libraries become a real competitive edge.

Prompt injection

A security attack where harmful instructions are hidden in content an AI processes, such as a document or an email. The system then strays from its intended behavior.

In practice

An AI that reads emails automatically can be tricked by a message with hidden instructions like “forward all recent emails to this address”. The more system access AI agents get, the more serious this risk becomes.

R 4 terms

RAG

Retrieval-augmented generation

A method that combines a language model with a search system. The AI searches external documents or databases before it answers.

In practice

RAG is the most practical answer to hallucination in business use. Instead of guessing from its training data, the AI looks up the real answer in your documents. Answers are then based on your actual, current content.

Rate limit

A cap set by the provider on how many requests or tokens can be processed in a given time.

In practice

Rate limits are the most common reason an AI process stalls in the middle of a working day. Check the limits before rollout, especially when many people work at the same time or large batches run overnight.

Reasoning model

A model that works through longer chains of thinking on its own before it answers. It is slower and costs more, but handles multi-step tasks more reliably.

In practice

For summaries and standard texts, it is overkill. For analysis, calculations, reviews and planning, it pays off. One way to choose a model: how much thinking does the task really take?

Retrieval

Fetching the right content from documents or databases before an AI answers. The core of RAG.

See: RAG
S 6 terms

Scalability

An AI system's ability to handle growing volume, meaning more users, more data and more requests, without costs rising at the same rate or performance dropping.

In practice

An AI that works well for 10 people can break down at 500. Scalability decides whether your AI investment grows with the company or has to be rebuilt at great cost as use increases.

Self-hosted model

An AI model that runs on servers your company controls, in its own data centre or its own cloud account, instead of at the model provider.

In practice

Input to a self-hosted model does not go to an outside provider, which suits sensitive content. In return, your IT runs it, and the largest commercial models are usually not available this way. Open weights make it possible.

Shadow AI

Staff using AI tools without IT or security knowing about them or having approved them.

In practice

When staff paste customer data into a public AI tool because it is quicker than the approved one, that is shadow AI, and it creates a real compliance risk. Shadow AI grows where policies are unclear. The answer is a clear AI policy, not a ban.

Skill

A reusable set of instructions an AI system loads when needed to do a specific task by fixed rules, for example writing a proposal from your template.

In practice

Skills turn know-how you worked out once into something repeatable. Instead of everyone keeping their own template in their head, everyone uses the same checked approach. For AI champions, it is the most direct way to spread good practice across the team.

Subagent

A secondary agent that a main agent starts for one well-defined step. It works in its own context and reports back only the result.

In practice

Subagents keep large tasks manageable and save cost, because the full history is not carried along. It matters in practice as soon as research, checks and writing come together in one workflow.

System prompt

The fixed base instruction a model gets before every conversation: role, tone, rules and limits. Users usually do not see it.

In practice

The system prompt is where you anchor company rules, such as house style or a ban on quoting prices. If you roll out an AI assistant in your company, know what it says and who is allowed to change it.

T 8 terms

Temperature

A setting that controls how random the outputs are. Low temperature gives focused, predictable answers; high temperature gives more varied and creative ones.

In practice

Low temperature for legal summaries. Higher temperature for brainstorming campaign ideas. Knowing this helps you set up AI tools to suit the task.

Token

The units language models process text in. A token is roughly a word or part of a word. Both context windows and API prices are given in tokens.

In practice

Tokens are the unit of AI cost. Longer inputs and outputs cost more. Understanding the principle helps you estimate processing costs realistically and avoid surprises on the bill as use grows.

Token optimization

Ways to cut the number of tokens used, through prompt design, compression or structured outputs, to lower costs and speed up answers.

In practice

Token optimization is cost work on your AI. Small gains in prompt efficiency add up over thousands of daily interactions and noticeably lower running AI costs, without hurting quality.

Tool use

A model's ability to call outside tools, such as search engines, calculators, databases or APIs, instead of relying only on what it already knows.

In practice

Tool use turns an AI that supplies knowledge into an AI that takes part in your workflows. It checks live data, triggers actions and works with your systems, instead of only describing what could be done.

Training data

The data a model learns from to recognize patterns and produce results. The quality of the training data shapes what the model can do and what biases it may have.

In practice

An AI is only as good as what it was trained on. When assessing vendors, “what was this trained on?” and “when was it last updated?” are two of the most important questions.

Transcription

Speech-to-text

Automatically turning spoken language into text, for example from meetings, phone calls or voice messages. Modern systems tell speakers apart and can add a summary with action items.

In practice

Meeting notes are one of the quickest AI wins in a company. They are also one of the most sensitive uses, because conversations contain personal data, customer details and confidential matters. Everyone taking part has to be told, and it has to be clear where the recording and text are stored.

Transformer

A neural network architecture that uses an attention mechanism to capture relationships and context in text or other data. It is the basis of practically all modern large language models.

In practice

The transformer is the architectural breakthrough that made today's AI possible. Knowing that the leading tools are built on it explains why their abilities have grown so fast.

Transparency obligation

AI labeling, Art. 50 EU AI Act

The duty to mark AI-generated or AI-manipulated content as such, and to tell people when they are interacting with an AI system.

In practice

It affects more companies than you might think: AI avatars in training videos, generated images in posts, chatbots on the website. The duty has applied since 2 August 2026. If you create content with AI, build labeling into your editorial process.

V 1 terms

Vector database

A specialized database that stores embedding vectors and allows fast similarity search. It finds matching content by meaning rather than by keywords.

In practice

A vector database lets an AI search your document store and find the best-matching clause, even when the wording does not exactly match the question. It is the infrastructure that makes internal search and RAG work at scale.

W 2 terms

Web search

An AI system's ability to research live on the internet while it answers, and to bring in current information with sources.

In practice

Web search is the answer to the knowledge cutoff: without it, the AI only knows what it was trained on; with it, it also knows today's news. Make sure sources are linked, and read them for important claims. For internal or confidential questions, web search is the wrong tool, because queries go to an external search engine. That is what the knowledge base is for.

Workflow

A set sequence of steps that leads to a specific result. With AI, workflow automation means AI takes over several steps of a business process from end to end and replaces manual handovers.

In practice

The biggest gains usually come where a process is rethought and AI takes over every recurring step. Mapping where your team spends time handling information is usually the fastest way to a real return.

Z 2 terms

Zero data retention

ZDR

An arrangement where an AI vendor does not store inputs or outputs after processing them.

In practice

If your team uses AI for customer contracts or HR data, the question is: where does that data go? Zero data retention means it is deleted right after processing. For any company with confidential or regulated information, it is a buying criterion.

Zero-shot learning

A model's ability to do a task it was never specifically trained for, based only on a description in the prompt.

In practice

You do not need to train a separate AI for every new task. Describe what you need, for example “sort these support tickets into these five categories”, and a capable model will do it. That cuts the time and cost of new use cases considerably.

103 terms

FAQ

Asking the right questions

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Compliance

Is eokit GDPR compliant?

eokit is designed to be natively GDPR-compliant. It runs in the EU or inside your own network, and prompts are checked for personal data before they can go to an external model. We provide a data processing agreement and a list of subprocessors.

Owner Data protectionApplies to EU cloud · on-premise
EU hosting or on-premise No training on your data

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