ELIZA: The First Chatbot

Impact

At a glance

Date: 1966
Era: The Birth of AI (1956–1969)
Category: Research Breakthroughs
Impact: 3 / 5
Key people: Joseph Weizenbaum
Organizations: MIT

What Happened

Joseph Weizenbaum created ELIZA, a program that simulated a Rogerian psychotherapist using simple pattern matching. Despite being purely rule-based with no understanding, users became emotionally attached to it and insisted it truly understood them — a phenomenon Weizenbaum found deeply disturbing.

Why It Mattered

First demonstration of the 'ELIZA effect' — humans' tendency to attribute intelligence to machines. Presaged modern concerns about AI relationships and chatbot attachment, 57 years before ChatGPT.

Key People

Joseph Weizenbaum

Organizations

Frequently asked questions

When did ELIZA: The First Chatbot happen?+

ELIZA: The First Chatbot took place in 1966.

Who was behind ELIZA: The First Chatbot?+

For ELIZA: The First Chatbot, key people included Joseph Weizenbaum and organizations involved were MIT.

Why was ELIZA: The First Chatbot important?+

First demonstration of the 'ELIZA effect' — humans' tendency to attribute intelligence to machines. Presaged modern concerns about AI relationships and chatbot attachment, 57 years before ChatGPT.

Which era of AI history does ELIZA: The First Chatbot belong to?+

ELIZA: The First Chatbot is part of the The Birth of AI era (1956–1969) — a significant development in the research breakthroughs category.

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