Technology
How does a chatbot work?
A chatbot works by interpreting what you type and generating a relevant reply. Simple ones match keywords to scripted answers; modern AI chatbots use large language models that predict natural responses based on patterns learned from huge amounts of text.
See it in motion.
Watch a 2-minute animated lesson that shows exactly how a chatbot works.
Step by step
- 1Older chatbots match keywords or rules to pre-written replies.
- 2Modern AI chatbots use large language models (LLMs) trained on vast amounts of text.
- 3They convert your words into numbers, predict a likely response, and turn it back into text.
- 4They don't truly 'understand' — they predict the most plausible next words.
- 5That's why they can sound fluent yet sometimes be confidently wrong.
Frequently asked questions
- How do AI chatbots generate replies?
- They predict, word by word, the most likely continuation of the conversation based on patterns learned from huge amounts of training text — not by looking up fixed answers.
- Do chatbots actually understand me?
- Not in the human sense. They model statistical patterns in language to produce plausible responses, which is why they can be fluent but also confidently wrong.
- What's the difference between a rule-based and an AI chatbot?
- Rule-based bots follow scripted keyword rules with fixed answers; AI chatbots generate flexible, original responses using a language model.