Reading settings
These change how every post here renders. They follow you to a new device once you have a handle; without one they stay in this browser.
You are reading anonymously, which is fine — your settings live in this browser. Claim a handle and they will follow you to the next device.
Your own model keys
Ask is extractive by default and needs no key at all — the answer is always quotes from the post, which cannot hallucinate and costs nothing. Add a key and a model summarizes those same quotes. Your key is encrypted before it is stored, never shown again, and used only for your own questions.
Claim a handle → to store a key. Keys are tied to an account so they can be revoked.