Yuki vs Meta Muse

Meta launched Muse on 8 September 2026 and it is the most ambitious consumer AI agent anyone has shipped: it books, it buys with single-use cards, it fills in forms, it works in the background, and it lives in its own app, on the web and inside WhatsApp. If you live in the United States and you are comfortable with Meta holding your calendar, your inbox and your purchases, it is worth your attention.

This page is the honest comparison, written by the team behind Yuki. We have included the places Muse is ahead, because a comparison that pretends otherwise is not worth reading.

The first question is not features. It is whether you can install it.

For most people reading this, that settles the practical question. And it is not a temporary gap you can wait out casually: the EU AI Act and GDPR make a consumer agent that reads your mail, holds a payment card and acts on your behalf a genuinely harder product to launch in Europe than in the US. Google's own agent, Gemini Spark, shipped to more than 160 countries and specifically excluded the EEA, the UK and Switzerland. Europe is not first in line for any of this.

Yuki is built in Europe, for Europe, with EU data residency end to end — and available in 22 languages rather than English first.

Side by side

Groups: the part Muse structurally cannot copy

Muse is one agent for one person. That is an architectural choice, not a missing feature — there is no second inbox, no shared ledger and no other member for it to coordinate with. Most people's admin is not solo: it is a partner, a flat, a family, a trip, a group of friends who owe each other money.

Yuki ships nine group types, each with its own shape rather than one generic "shared space": couples, families, co-parents, flatmates, friends, trips, households, a fitness and habit challenge, and a custom type for anything else. Inside a group you get shared tasks and lists, expense splitting with settle-up, polls for the decisions nobody wants to chase, and stats on what the group is actually doing.

Inside a group you also get a shared calendar Yuki can search for a time that suits everyone, the birthdays and gifts nobody wants to be the one to forget, and shared goals you are saving towards together — plus stats that answer the question groups actually argue about, which is who is pulling their weight.

Money: tracked, not just talked about

Yuki turns receipts and renewal notices into tracked spending, subscriptions and bills without you entering anything, and adds the layer most assistants skip entirely. Set the goals people actually have — retirement, a house deposit, a college fund, a car — and Yuki tells you the honest pace: what you would need to set aside each month to land it. Track what you hold, from individual stocks and ETFs to funds and cash, and the liabilities on the other side of the ledger — mortgage, credit card, car and student loans — so net worth across every account and currency is one honest number rather than a flattering half of one. Yuki also splits what you spend into essential and non-essential, names your top category and your most expensive day, and takes a scanned paper receipt or an imported bank statement into the same picture.

People: the part that is not admin

Yuki keeps the people in your life, not a contact list: who they are to you, when their birthday is, what they like, what you owe each other and what you have got planned together. One profile shows the groups you share, what is coming up between you and what you have shared before — so "find Mum a gift around €80" starts from something Yuki already knows rather than a guess. Duplicates get merged rather than quietly doubled, and you choose how people can find you — by phone, email, username, or only through a shared group.

Control: an agent you can put on a leash

Every connection is either read-only or allowed to act, and you decide which — Gmail, Google Calendar, Contacts and your device calendar today, with open banking, rides and food delivery rolling out. Autopilot is a ladder rather than a switch: ask me every time, auto-approve this one task, auto-approve below a limit you set, or auto-approve for the duration of a trip. Whatever you switch on, high-risk actions — sending email, large purchases — still come back to you for a tap, and every grant is scoped, expiring and revocable from the same screen that made it.

Where Muse is ahead

Muse can act on the open web. It drives a browser inside a virtual machine, which means it can attempt things no integration-based agent can reach: an obscure booking form, a council website, a shop with no API. That is a real capability and Yuki does not have it.

It is also worth knowing what that costs. Meta has said publicly that prompt injection is not a solved problem, and an agent that reads untrusted web pages while holding your inbox and a payment card is exactly the situation where it matters. Independent testing by PYMNTS found Muse completed none of three attempted checkouts. Early agentic browsing is impressive and unreliable at the same time, and both halves are true.

Where Yuki is ahead

• You can actually use it. Europe, the UK and most of the world, today.
• It costs €3.99 rather than $20, and asks for no card until you choose to pay.
• It never trains a model on your data, keeps that data in the EU, and passed an independent CASA Tier 2 assessment in March 2026.
• It works for more than one person: couples, families, flatmates and co-parents share tasks, lists, plans and costs.
• It builds your calendar, trips and expenses from the confirmations already in your inbox, without being asked each time.
• It tracks the money rather than just discussing it: goals with an honest pace, holdings, liabilities and net worth as one number.
• You decide how far it can go — every connection read-only or allowed to act, and autopilot scoped to a task, a limit or a trip.
• It speaks 22 languages, not English with translations promised later.

The structural difference

Muse is one agent for one person, acting on the open web. Yuki is a coordination layer for a household, acting over typed integrations and your own structured data. That is why Muse can attempt a wider range of one-off tasks, and why Yuki can answer "who is picking up the kids on Thursday and who owes what for the weekend" — a question Muse has no place to put.

If your life is genuinely solo and entirely inside the United States, Muse is a reasonable thing to try. If you live in Europe, share your life with anyone, or would rather your calendar and inbox were not training data, that is the gap Yuki was built for.

Rolling out now: the agent release

The comparison above is what Yuki does today. The agent release extends it into the ground Muse opened up, on rails that already work end to end in testing: searching real flights and holding a seat before you pay, booking stays, connecting a bank through open banking so balances and transactions are live rather than inferred from email, and planning, booking and running a whole trip from one conversation.

Frequently asked questions