Lyrena.

AI glossary.
34 terms, explained simply.

For everyone who is not an expert, and for those who want to explain it to their team. Every term has its own address for linking.

Basics

Artificial intelligence
Programs that solve tasks that would otherwise require human thinking: understanding language, recognizing images, finding patterns, preparing decisions.
Language model (LLM)
The “AI brain”: a program that understands and writes text. The engine of an AI system. Examples: Claude, GPT, Gemini, Llama. Learn more
Prompt
The instruction to a language model. In an AI system, prompts are built into the workflows, nobody has to type them.
Token
A piece of text, usually part of a word. Language models compute and charge in tokens.
Hallucination
A false statement that a language model phrases convincingly. Remedy: looking things up in your own knowledge with source references and checking before anything takes effect.
Short-term memory (context)
What a language model sees in the current conversation. Afterwards it is gone, which is why a business needs long-term memory.
Long-term memory
The permanent knowledge store of an AI system: customers, documents, agreements, decisions. Every AI role draws on it. Learn more
Open model
A language model whose weights are freely available, such as Llama or Qwen. It can run on your own hardware and be further trained. Learn more

How AI works

AI agency
A service provider that helps businesses use AI: from consulting through implementation to operation. Learn more
AI architect
Plans, builds and runs a business’s AI system as a whole: which capabilities, which workflows, which interfaces, which data location. Like an architect for a house. Learn more
AI system
Language model plus memory, senses, hands and rules. It works within your workflows instead of just answering questions. Learn more
AI agent
A program that uses a language model to plan and carry out steps on its own, for example looking things up, writing, entering data.
AI role
A specialized AI agent with a clear task, such as accounting, sales or legal, with its own rules.
Workflow
A fixed sequence of work steps that runs by itself, for example inquiry, quote, invoice. Learn more
Process automation
Recurring work is done by software. With AI, also work that requires reading, understanding and writing. Learn more
Autonomy level
How independently a workflow runs: from manual work through suggestion and approval to fully automatic with self-improvement.
Lookup (RAG)
Before every answer, the language model searches your documents and names the source. No training needed, always up to date. Learn more
Fine-tuning
A language model is further trained on your texts so that it masters your technical language, your tone and your cases. Learn more

Technology & devices

Interface (API)
The connection between programs. Through it, the AI system reads and writes in your accounting, your calendar or your devices.
Local AI (on-premise)
The AI system runs on your own hardware on your premises. The data does not leave the business. Learn more
Cloud
Computing and storage in a data center, accessible via the internet. With us, in the EU on request.
Edge AI
AI on a small computer right on site, for example at the camera. Fast and works even without internet. Learn more
Camera AI (computer vision)
AI that understands images and videos: people, vehicles, damage, fill levels. Learn more
Speech recognition
Speech is turned into text, for example in the phone assistant or for work reports by voice. Learn more
AI chatbot
An assistant on your website, WhatsApp or messenger that answers questions and books appointments. Learn more
AI phone assistant
Answers calls with your company name, understands the request, books appointments and writes a note. Learn more

Law & security

GDPR
The EU General Data Protection Regulation. It governs how personal data may be processed, including by AI.
EU AI Act
The EU law on artificial intelligence. It classifies AI by risk and sets obligations for providers and users. Learn more
AI literacy (Art. 4)
Since 2 February 2025, companies that use AI must ensure sufficient AI literacy among their employees. Learn more
Transparency obligation (Art. 50)
If an AI speaks directly with people, it must be recognisable that it is an AI. Learn more
High-risk AI
AI in sensitive areas such as recruitment or lending. Strict additional obligations apply here.
Approval
A person confirms before the system carries out an action. You decide per workflow where this is necessary.
Data processing on behalf
A service provider processes data on your behalf. This requires a contract under Art. 28 GDPR.
Professional secrecy
The duty of confidentiality of, for example, lawyers, tax advisors and doctors. One reason for AI on your own server. Learn more