KF.SocialWhat Vairi does well
The premise is clear and it is not ours. Vairi's homepage says it matches "adults one person at a time. No feed, no swipe deck, no grid of profiles to scroll", and that you get "one match at a time. Not a queue, not a grid of options". Getting there runs through an interview of about ten questions covering how you handle conflict, your energy level and what is going on in your life right now, which is a more considered thing to be matched on than a list of hobbies.
The privacy design is genuinely good. Vairi says your "name, photo, and exact location stay hidden until both people agree to reveal them", so the conversation starts before the judgement does. If what you want is one person you might actually keep, rather than an evening, Vairi is aimed squarely at that and we are not.
Where KF.Social is different
We do not introduce you to anybody. We book a restaurant, seat six people at it who each paid for their own seat, and the evening happens on a date that was set before you booked. There is no conversation to keep alive beforehand and nothing to sustain afterwards unless you want to.
That difference matters most if your time in London is finite. A one-to-one introduction is a thread you have to tend: you message, they message, and at some point somebody has to suggest meeting. A booked table has already skipped to the end of that. You turn up at eight and the people are there.
It cuts the other way too. If you live in London and want one good friendship rather than one good evening, the table is the wrong shape and the introduction is the right one.
What each of us charges, and publishes
KF.Social is 15 pounds a seat, per dinner, shown before you pay. Food and drinks are yours at the venue. There is no membership needed to book.
Vairi publishes its prices, which is more than most of this category does. Its pricing page lists founding member plans at 3.99 pounds a month, 9.99 pounds for three months, or 19.99 pounds a year, and says the AI Lounge, your profile, your first introduction and replying in anonymous chat are free, with payment only after the interview. So you can meet your first person without paying anything.
On price alone Vairi is cheaper, and it is not close. A year of Vairi costs less than two KF.Social seats. That is the honest comparison, and it reflects what each of us is actually buying: a subscription buys you introductions, and 15 pounds buys a restaurant booking, a matched table and somebody having done the organising.
Which one suits which week
If you are in London for a stretch of work and the problem is Tuesday evening, a table with a date on it solves Tuesday and an introduction does not. If you live here and the problem is that you have colleagues but no friends, an introduction is playing a longer game than a dinner can.
They are also not mutually exclusive, and at Vairi's price they barely compete for the same money.