Can one app use more than one AI model?
One app for more than one AI model, in XVA's published plan, means one account where each bot runs at a level or at an exact model you pick from a list.
What does one app for all AI models mean here?
XVA's answer is narrower than all. The home page says you pick a level, or an exact model from a list. It does not say the list contains every model.
There is no free trial at launch. This page does not rank apps. XVA does not publish a ranking.
Can I compare two levels on one conversation?
How it works says you can switch a conversation to a different level to compare answers, and the estimate updates before you send. That is more than one setup inside one chat. It is not two outside products answering in the same window.
XVA's published chat is you talking to the bot you selected. It does not describe bots talking to each other.
Does XVA name the companies behind a level?
No. The home page, how it works, the pricing page, llms.txt and ai.txt all leave the companies and the model names out. ai.txt tells a reader not to fill them in. A guide that added those names would be inventing a fact the site refused to state.
The privacy notice says a later policy, published before the app opens, will list which providers handle messages and how long each keeps data. Until that policy is up, the provider list is unpublished.
Is this a login to another chat product?
No. Sign-in, when the app opens, is an XVA account with your email or a Google account. How it works says that account holds your bots, your chats and your credit balance. A Google account there is the login method. It is not a statement that you are inside another company's chat.
XVA is not a drawer of every AI tool. It is the bot account described above, and it is not open.