Keeper is a marriage website that uses questionnaires, algorithms, LLMs, and research experts for matchmaking users with soulmates. 10% of first dates from its beta version resulted in marriage or engagement.

Matchmaking process

Keeper requires answering questionnaires and providing a lot of user information in order to begin the matchmaking process, including career goals, SAT test scores, salary, net worth, lifestyle, and relationship philosophy. Users cannot create their own profiles. All profiles are auto-generated based on user-provided data. Users who are not seeking serious relationships are removed from the platform.

A non-AI algorithm uses basic information like age range and location to filter down the list of potential matches for each user as much as possible. Once the list is narrowed down to the top hundred users, LLMs and professional human matchmakers finish the selection process by picking a single person. If Keeper finds a match for a user, then the woman is notified by text message and shown the man's auto-generated profile first. If the woman is interested, then the man is notified by text message and her profile is shown to him. The marriage bounty contract and its price are then offered to the male user. This matchmaking process restarts each time a match fails. If Keeper is unable to find a match for a user at the end of the selection process, then it informs the user. A team of evolutionary scientists and psychometric experts at Stanford University help train the LLMs with anonymized data and assist in the matchmaking process.

Pricing

All users can navigate the site and provide user information for free. All women are matched on Keeper for free. However, if a man is offered a match on the platform, then he has to sign a "marriage bounty" contract where he agrees to $50,000 if his relationship is kismet. The full $50,000 is not paid immediately. The male has to pay $5,000 if he goes on a first date with his first match. If the male decides to go on a first date with a different match, then each consecutive first date for each match will be 20% cheaper than the last match.

The price for matching eventually becomes free once half of the total marriage bounty has been deducted. Each $5,000 payment is applied towards the total marriage bounty cost, so no user pays more than $50,000 for using the service. Keeper defines kismet relationships as marriages, couples who have children together, couples who have been cohabiting for over a year, or couples who have been together for over 18 months. Keeper is trying to fully automate the matchmaking process, in order to make its current pricing for marriage bounties and matchmaking considerably cheaper.

User base

Since launching, Keeper has had more than 1.5 million sign-ups, and about 300,000 of those have made accounts, as of December 2025. It is unknown exactly how many matches Keeper has made. According to Keeper's pitch deck, 10% of first dates from its beta version resulted in marriage or engagement, which is significantly better than dating apps. Its LLMs are trained on matchmaking insights that have been learned so far.

As of 2026, Keeper is limited to heterosexual couples due to market demand. Keeper wants to optimize its algorithm for heterosexual relationships before it can develop a separate algorithm for queer relationships. It does not offer explicit options for different gender identities. Keeper has a web app and no mobile apps. Keeper is only available for English speakers. As of 2026, users can sign up for Keeper anywhere, but a majority of users live in the United States, Canada, and the United Kingdom.

Keeper was founded in May 2022 by CEO Jake Kozloski. Keeper raised a $4 million pre-seed investment in October 2024.

External links