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Web address
Type of site
Registration None
Created by Rollo Carpenter
Alexa rank
positive decrease 44,736 (April 2014)[1]
Current status Active

Cleverbot is a web application that uses an artificial intelligence algorithm to have conversations with humans. It was created by the British AI scientist Rollo Carpenter, who also created Jabberwacky, a similar web application. It is unique in the sense that it learns from humans, remembering words within its AI. In its first decade Cleverbot held several thousand conversations with Carpenter and his associates. Since launching on the web in 1997, the number of conversations held has exceeded 150 million. Cleverbot is also now a $0.99 app.[2]


Unlike other chatterbots, Cleverbot's responses are not programmed. Instead, it "learns" from human input; Humans type into the box below the Cleverbot logo and the system finds all keywords or an exact phrase matching the input. After searching through its saved conversations, it responds to the input by finding how a human responded to that input when it was asked, in part or in full, by Cleverbot.[3][4]

Cleverbot participated in a formal Turing Test at the 2011 Techniche festival at the Indian Institute of Technology Guwahati on September 3, 2011. Out of the 334 votes cast, Cleverbot was judged to be 59.3% human, compared to the rating of 63.3% human achieved by human participants. A score of 50.05% or higher is often considered to be a passing grade.[5] The software running for the event had to handle just 1 or 2 simultaneous requests, whereas online Cleverbot is usually talking to around 80,000 people at once.


Cleverbot is constantly "learning", growing in data size, and perhaps also in the degree of "intelligence" it appears to display. Updates to the software have been mostly behind the scenes. In 2014 Cleverbot was upgraded to use GPU serving techniques.[6]

A significant part of the engine behind Cleverbot, and an API for access to serving, has been made available to developers in the form of Cleverscript.

An app that uses the Cleverscript engine to play a game of 20 Questions, has been launched under the name Clevernator. Unlike other such games, the player asks the questions and it is the role of the AI to understand, and answer factually. An app that allows owners to create and talk to their own small Cleverbot-like AI has been launched, called Cleverme! for Apple products.[7]


It was also featured in the Creepypasta BEN Drowned where a computer program talked to the protagonist through Cleverbot.[8]


  1. ^ " Site Info". Alexa Internet. Retrieved 2014-04-01. 
  2. ^ "Cleverbot". Retrieved 14 January 2013. 
  3. ^ Saenz, Aaron (2010-01-13). "Cleverbot Chat Engine Is Learning From The Internet To Talk Like A Human". Singularity Hub. Retrieved 2011-06-06. 
  4. ^ "Rollo Carpenter". Technische. Indian Institute of Technology Guwahati. Retrieved 13 November 2011. 
  5. ^ Aron, Jacob (6 September 2011). "Software tricks people into thinking it is human". New Scientist. Retrieved 13 November 2011. 
  6. ^ "Parallel Processing on Graphics Cards - - Cleverbot". 2014-02-05. Retrieved 2014-06-09. 
  7. ^ "Cleverme! on the App Store on iTunes". iTunes. Retrieved 24 March 2014. 
  8. ^ "Creepypasta - BEN Drowned". Retrieved 2015-03-27. 

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