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Saving creates the folder in Tandem. The always-on Tandem service starts it automatically.
One AI drafts, the other reviews and adds to it, then the first writes the final answer. You see one answer; the steps hide behind a link. Pick the models in the picker at the top of the chat.
In Team up, only the final answer is read aloud.
Model lists come from each provider's own API about once an hour, mixed with
the friendly names, hints and prices in providers.json. Choose a model per AI
in the picker at the top of the chat.
API keys stay on the server. They are never shown here or sent to this browser.