The same model.
A different result.

Why the model no longer makes the difference

The best language models are close together: according to Stanford’s AI Index 2026, the leading model was only 2.7% ahead of the pack in March 2026. Choosing an assistant on the model alone means choosing between near equals.

What does make a difference is everything around it. In Microsoft’s Work Trend Index 2026, among 20,000 knowledge workers in ten countries including the Netherlands, organisational factors explain more than twice as much of the value of AI as what individuals do with it. It is about set-up, support and ways of working, not the subscription.

The core: everything connects, and you do it by voice

What sets a tailored system apart from a standard assistant is coherence. Your private appointments and your business files in one assistant, with rules about what stays private. Looking something up in your own business data by voice, and recording something in your file: a decision, a note, a commitment. Calling a team member by name (“ask the CFO what this does to the margin”), or several at once in one round. And having team members follow up: changes in your projects are tracked, and promises are monitored until they are kept.

On each of those features on its own, a standard assistant is often good too: talking, searching, building agents. A standard assistant does not offer them in combination: private and business in one conversation, reading your own business data by voice and recording in your files, and a team you address by name that follows up by itself.

What “tailored” does mean

Three things. Someone sets the assistant up for you, based on a conversation about your work. On day one it already knows what it needs to: your ongoing matters, your people, your rules about what it may do itself and what not. And afterwards someone keeps it current as your work changes or a better model arrives.

For writing, summarising and thinking along, ChatGPT is very good too. ChatGPT does not offer that in combination with set-up by people, its own phone number that calls for you, and a server in your company’s name. That is how to read every comparison in this guide: honest feature by feature, and then the question of what you get together.

What tailored makes possible

Tailored is a different way of working: not adapting your work to a standard app, but building an assistant and a team around how you work. What that makes possible goes further than a standard service can offer, because it is set up per client and built where needed.

A few examples, with an honest note on where Oneeno stands. Calling team members by name, several at once, and recording in your file by voice: available now. Adding a team member for your field on top of the core team: available now, from Executive. Choosing where the thinking happens, up to everything in Europe: we organise that on request, within our service. Making a team member responsible for a subject, such as your cash flow or contract renewals, so that it monitors it, reports and accounts for it: we build that together with the client, if they want it and it can be done. A connection with your own software or database, or writing into your own systems after your approval: also built together.

More providers will come to work this way; it cannot be otherwise, for the same reasons set out in this guide. We are happy to research what tailoring delivers, also where it is hard. And if we think we cannot do something well, we do not do it.

Why it costs more, and what you get back

A tailored assistant costs more than a consumer subscription. That is deliberate: Oneeno aims to give you everything you ask for, and sometimes that means building something that did not exist yet. A twenty-euro subscription cannot do that, and does not need to.

That is also why it does not start with a download. First a conversation about your work, your people and what you want to hand over; then we set it up and install it. Like a car built to order: you do not buy it off the shelf.

One app for all your agents, set up for you

Your business agents and your personal help in one app: the digital CFO who knows your figures, the lawyer, the minute-taker, and also the concierge who arranges your appointments and travel. One conversation, one memory, one place with your rules.

It is not a standard app that is the same for everyone. Each assistant is set up per person, with the agents and integrations that fit that person.

When off the shelf is enough

For separate tasks you set up yourself, with no follow-up and no sensitive data of others, a subscription of around twenty euros is enough. If you work entirely in Microsoft 365 and mainly want help in your own documents, Copilot is a logical choice. We would rather say so honestly than have you pay too much.