Reviving ELIZA: A C++ Recreation of the First Chatbot

2025-05-17
Reviving ELIZA: A C++ Recreation of the First Chatbot

This post details the recreation of ELIZA, the first chatbot created by Joseph Weizenbaum in 1966, using C++. The author meticulously recreated ELIZA's functionality, starting from parsing the original script to optimizing the code and comparing it with the original source. Further enhancements include running ELIZA on an ASR 33 teletype and contributing to the proof that the 1966 CACM version is Turing-complete. The entire project is neatly packaged in a single eliza.cpp file, with compilation instructions for macOS and Windows. This project is a fascinating tribute to AI history and a valuable resource for developers interested in early AI technology.

AI