Last updated: October 2026 Β· 3 min read
AI chatbots can answer questions, write, translate and help with coding. They feel new, but their roots go back decades. Here are 10 incredible facts.
10 incredible facts about AI chatbots
1. The first chatbot was created in 1966
Joseph Weizenbaum built ELIZA at MIT. It imitated a therapist by turning users’ statements into questions.
2. People confided in a simple program
Weizenbaum was surprised that some people formed emotional attachments to ELIZA, even though it understood nothing.
3. The word “chatbot” dates from the 1990s
The term comes from “ChatterBot”, coined by developer Michael Mauldin in 1994.
4. A 2017 idea powers modern chatbots
Today’s chatbots are built on large language models using the transformer architecture introduced by Google researchers in 2017.
5. They predict text piece by piece
Large language models break text into “tokens” and generate answers by predicting one token at a time based on patterns learned from huge amounts of text.
6. Human feedback makes them helpful
After initial training, models are refined using feedback from people who rate answers, helping them follow instructions and avoid harmful replies.
7. One app grew record-fast
An AI chatbot app reached an estimated 100 million users in about two months after its late-2022 launch, then one of the fastest-growing consumer apps ever.
8. They can “hallucinate”
Chatbots sometimes produce confident but false information, so important facts should always be verified.
9. They may not know today’s news
Unless connected to web search, a chatbot’s knowledge is limited to the data it was trained on, which has a cut-off date.
10. India is building AI for its languages
Under the IndiaAI Mission, approved in 2024, and through startups, India is developing AI models and tools for Indian languages.
Frequently asked questions
Do AI chatbots understand what they say?
They are very good at producing language, but scientists debate whether this amounts to real understanding.
Is it safe to share personal details with chatbots?
Avoid sharing passwords, bank details, Aadhaar or other sensitive information.
Can chatbots replace search engines?
They can summarise and explain, but for up-to-date or critical facts, check reliable sources.
Keep exploring
- How AI chatbots work
- Using AI responsibly
- More Artificial Intelligence explainers on Tiwaripedia
- Browse all incredible facts
Facts are based on widely accepted scientific, historical and official sources at the time of writing. Spotted something that needs updating? Let us know.
