Choosing an AI provider

Postout doesn’t run an AI service. You choose the model that writes your drafts, and requests go straight from your device to that provider. There’s no Postout server in the middle and no per-draft fee from us.

Set providers up in Settings → Models.

Your options

Provider	Where it runs	Cost	Needs
Apple Intelligence	On your device	Free	A device and OS version that supports Apple Intelligence, with it turned on
Claude (Anthropic)	Anthropic’s servers	Billed by Anthropic to your account	An Anthropic API key
OpenAI	OpenAI’s servers	Billed by OpenAI to your account	An OpenAI API key
Gemini (Google)	Google’s servers	Billed by Google to your account	A Gemini API key
Custom	Wherever you point it	Depends on the service	A base URL and model name, and a key if the server needs one

Which should I pick?

• Want nothing to leave your device? Use Apple Intelligence. It’s private and free, and great for short posts. It’s a smaller model, so long-form drafts (newsletters, Medium, YouTube descriptions) are usually better with a cloud model.
• Want the best writing? A current model from Claude, OpenAI, or Gemini follows your personality profile and each platform’s style more closely. A single draft typically costs a fraction of a cent to a few cents, depending on the model and how many platforms you draft for.
• Run your own models? Use Custom. See Custom and self-hosted providers.

You can set up more than one and switch whenever you like.

Switching providers

With two or more providers set up, choose one per draft from Post settings → Provider next to the compose bar. The compose bar names the provider while it writes, for example Creating with Gemini…, so you always know where your idea is going.

Removing a provider

Remove any provider in Settings → Models. Its API key is deleted from your Keychain and Postout stops sending it requests immediately. Your existing drafts stay.

Next: Adding an API key.