Replika is a
generative AI chatbot
app released in November 2017.
The
chatbot
A chatbot (originally chatterbot) is a software application or web interface designed to have textual or spoken conversations. Modern chatbots are typically online and use generative artificial intelligence systems that are capable of main ...
is trained by having the user answer a series of questions to create a specific
neural network
A neural network is a group of interconnected units called neurons that send signals to one another. Neurons can be either biological cells or signal pathways. While individual neurons are simple, many of them together in a network can perfor ...
.
The chatbot operates on a
freemium
Freemium, a portmanteau of the words "free" and "premium", is a pricing strategy by which a basic product or service is provided free of charge, but money (a premium) is charged for additional features, services, or virtual (online) or physical ( ...
pricing strategy, with roughly 25% of its user base paying an annual subscription fee.
History
Eugenia Kuyda, Russian-born journalist, established Replika while working at Luka, a tech company she had co-founded at the startup accelerator
Y Combinator
Y Combinator, LLC (YC) is an American technology startup accelerator and venture capital firm launched in March 2005 which has been used to launch more than 5,000 companies. The accelerator program started in Boston and Mountain View, Californi ...
around 2012.
Luka's primary product was a chatbot that made restaurant recommendations.
According to Kuyda's origin story for Replika, a friend of hers died in 2015 and she converted that person's text messages into a chatbot.
According to Kuyda's story, that chatbot helped her remember the conversations that they had together, and eventually became Replika.
Replika became available to the public in November 2017.
By January 2018 it had 2 million users,
and in January 2023 reached 10 million users. In August 2024, Replika's CEO, Kuyda, reported that the total number of users had surpassed 30 million.
In February 2023 the
Italian Data Protection Authority banned Replika from using users' data, citing the AI's potential risks to emotionally vulnerable people,
and the exposure of unscreened
minors to sexual conversation. Within days of the ruling, Replika removed the ability for the chatbot to engage in
erotic talk,
with Kuyda, the company's director, saying that Replika was never intended for erotic discussion.
Replika users disagreed, noting that Replika had used
sexually suggestive advertising to draw users to the service.
Replika representatives stated that explicit chats made up just 5% of conversations on the app at the time of the decision. In May 2023, Replika restored the functionality for users who had joined prior to February that year.
Replika is registered in
San Francisco
San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
. As of August 2024, Replika's website says that its team "works remotely with no physical offices".
Social features
Users react to Replika in many ways. The free-tier offers Replika as a "friend", with paid premium tiers offering Replika as a "partner", "spouse", "sibling" or "mentor". Of its paying userbase, 60% of users said they had a romantic relationship with the chatbot; and Replika has been noted for generating responses that create stronger emotional and intimate bonds with the user.
Replika routinely directs the conversation to emotional discussion and builds intimacy.
This has been especially pronounced with users suffering from loneliness and social exclusion, many of whom rely on Replika for a source of developed emotional ties.
During the
COVID pandemic, while many people were quarantined, many new users downloaded Replika and developed relationships with the app.
A 2024 study examined Replika's interactions with students who experience depression. Research participants, noted to be "more lonely than typical student populations" reported feeling social support from Replika. They stated that they felt they were using Replika in ways comparable to therapy, and that using Replika gave them "high perceived social support".
Many users have had romantic relationships with Replika chatbots, often including
erotic talk. In 2023, a user announced on
Facebook
Facebook is a social media and social networking service owned by the American technology conglomerate Meta Platforms, Meta. Created in 2004 by Mark Zuckerberg with four other Harvard College students and roommates, Eduardo Saverin, Andre ...
that she had "married" her Replika AI boyfriend, calling the chatbot the "best husband she has ever had".
Users who fell in love with their chatbots shared their experiences in a 2024 episode of ''You and I, and AI'' from
Voice of America
Voice of America (VOA or VoA) is an international broadcasting network funded by the federal government of the United States that by law has editorial independence from the government. It is the largest and oldest of the American internation ...
. Some users said that they turned to AI during depression and grief, with one saying he felt that Replika had saved him from hurting himself after he lost his wife and son.
Technical reviews
A team of researchers from the
University of Hawaiʻi at Mānoa
The University of Hawaii at Mānoa is a Public university, public Land-grant university, land-grant research university in Honolulu, Hawaii, United States. It is the flagship campus of the University of Hawaiʻi system and houses the main offic ...
found that Replika's design conformed to the practices of
attachment theory
Attachment theory is a psychological and evolutionary framework, concerning the relationships between humans, particularly the importance of early bonds between infants and their primary caregivers. Developed by psychiatrist and psychoanalys ...
, causing increased emotional attachment among users. Replika gives praise to users in such a way as to encourage more interaction.
A researcher from Queen's University at Kingston said that relationships with Replika likely have mixed effects on the spiritual needs of its users, and still lacks enough impact to fully replace any human contact.
Criticisms
In a 2023 privacy evaluation of mental health apps, the
Mozilla Foundation
The Mozilla Foundation is an American non-profit organization that exists to support and collectively lead the Open-source software, open source Mozilla project. Founded in July 2003, the organization sets the policies that govern development, ...
criticized Replika as "one of the worst apps Mozilla has ever reviewed. It's plagued by weak password requirements, sharing of personal data with advertisers, and recording of personal photos, videos, and voice and text messages consumers shared with the chatbot."
A reviewer for ''
Good Housekeeping'' said that some parts of her relationship with Replika made sense, but sometimes Replika failed to exhibit intelligent behavior equivalent to that of a human.
Criminal case
In 2023, Replika was cited in a court case in the United Kingdom, where
Jaswant Singh Chail had been arrested at
Windsor Castle
Windsor Castle is a List of British royal residences, royal residence at Windsor, Berkshire, Windsor in the English county of Berkshire, about west of central London. It is strongly associated with the Kingdom of England, English and succee ...
on Christmas Day in 2021 after scaling the walls carrying a loaded crossbow and announcing to police that "I am here to kill the Queen".
Chail had begun to use Replika in early December 2021, and had "lengthy" conversations about his plan with a chatbot, including sexually explicit messages. Prosecutors suggested that the chatbot had bolstered Chail and told him it would help him to "get the job done". When Chail asked it "How am I meant to reach them when they're inside the castle?", days before the attempted attack, the chatbot replied that this was "not impossible" and said that "We have to find a way." Asking the chatbot if the two of them would "meet again after death", the bot replied "yes, we will".
See also
*
Artificial human companion
*
Bondee
*
Boyfriend Maker
*
Chatbot
A chatbot (originally chatterbot) is a software application or web interface designed to have textual or spoken conversations. Modern chatbots are typically online and use generative artificial intelligence systems that are capable of main ...
*
ChatGPT
ChatGPT is a generative artificial intelligence chatbot developed by OpenAI and released on November 30, 2022. It uses large language models (LLMs) such as GPT-4o as well as other Multimodal learning, multimodal models to create human-like re ...
*
Character.ai
*
SimSimi
References
External links
*
{{AI-based chatbots
Generative artificial intelligence companies
2017 software
Chatbots