Does resetting my password sign out my other devices?

No. Your new password is required for every sign-in from that point on, but sessions already open elsewhere stay open. If you are resetting because you think somebody else has your password, sign in afterwards and use “Sign out all other devices” — that is what actually closes them, and it never asks for a code.

From the guide Account Security: SSO, 2FA & Passkeys.

Changing your password

Go to Settings → Password on the website, or Settings → Security → Password in the iPhone and Android apps. You confirm it is you first, with a one-time code sent to your email or phone, and then type only the new password — you are not asked for the old one, because the code already proved it is you. As you type, a checklist turns green item by item: at least 10 characters, an uppercase letter, a lowercase letter, a number and a symbol. When it is saved, every other device signed in to your account is signed out. If you signed up with Apple or Google and never had a password, the same screen lets you set one.

Read the whole guide: Account Security: SSO, 2FA & Passkeys

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