Chatbots and Generative AI
Modern AI chatbots are powered by large generative language models. Understanding what happens behind a chatbot response helps you use these tools more effectively.
10 min•By Priygop Team•Updated 2026
How Modern AI Chatbots Work
When you type a message to ChatGPT or Claude, this happens:
- 1Your message is tokenized: split into subword tokens
- 2The tokens are converted to numerical vectors (embeddings)
- 3These pass through 96 to 120 Transformer layers
- 4The model predicts the probability of every possible next token
- 5One token is selected (based on the probabilities)
- 6That token is appended to the sequence, and the process repeats
- 7The model generates one token at a time until it produces an end-of-sequence token
The entire visible response is generated one token at a time, which is why you see responses appear gradually.
Diagram
Loading diagram…
Deep Learning ⊂ Machine Learning ⊂ Artificial Intelligence
What Chatbots Are Good At
- Explaining concepts in different ways until you understand
- Summarizing long documents quickly
- Drafting text that you then edit and improve
- Brainstorming ideas and alternatives
- Writing and debugging code with explanation
- Answering questions about well-known topics with caveats for verification
- Translating text between languages
What Chatbots Are Poor At
- Factual accuracy on specific, obscure, or recent topics (training data has a cutoff date)
- Reliable arithmetic and complex calculations (use a calculator for anything important)
- Tasks requiring real-world information (live stock prices, weather, current events without search tools)
- Consistent memory across sessions (each conversation typically starts fresh)
- Understanding the true intent behind ambiguous requests
- Providing legally, medically, or financially binding advice
Key Takeaways
- Modern AI chatbots are powered by large generative language models.
- Explaining concepts in different ways until you understand
- Summarizing long documents quickly
- Drafting text that you then edit and improve