More than one company's models

ChatGPT gives you OpenAI's models. That is the point of it, and they are good. But some days the better answer comes from Claude or Gemini, and you cannot get to those from inside ChatGPT.

Unium puts the leading models from several providers in one app, so the model is a choice you make per message rather than a company you committed to. You can even ask a few of them the same question and compare the answers.

Built for two people, not one

This is the bigger difference, and it is not a feature so much as the whole shape of the product.

A ChatGPT account is yours alone. Sharing an answer means a screenshot, which drops everything the model knew. In Unium you send one link, the other person joins in a tap, and the AI answers both of you in the same thread. It asks each of you for your side, keeps track of who said what, and comes back with something that accounts for both.

That is what it is for: the weekend plan you cannot agree on, the trip, the argument that keeps coming back. Not a smarter search box, a third party in the room.

One subscription, not one each

If two people in a house both want a decent AI, ChatGPT wants two subscriptions. Unium wants one. A plan covers everyone on your account, from $10 a month, so adding your partner or your family does not add a second bill.

Getting started is free on a model we choose for you. A paid plan is what adds model choice and room for much longer conversations. The pricing page has what each plan includes.

Shared by default, private when you want

Chats you start are visible to the people on your account, which is what makes the AI useful between you. Long press any chat to make it private, and nothing from it is shared back.

When ChatGPT is still the right call

To be fair about it: if you are happy on OpenAI's models, you use it every day, and you genuinely only ever need it for yourself, a single subscription is simple and there is no strong reason to move. Unium earns its place when there is a second person involved, or when you want to choose the model rather than be assigned one.