Does Twitch Prime cost you if you have Amazon Prime?

I already own an Amazon Prime acc. And now I'm wondering if it costs anything to have a tweak prime subscription, because on the website is described that the first month is only free.

Is this related to Amazon Prime so for people who do not own it or is it related to Twitch?

If you own Amazon Prime, you also own Amazon Prime.

I would amelden with the amazon prime account…

As an Amazon Prime customer, you can use a Twitch Prime Sub every month for free. To do this you need to connect your Twitch and your Amazon account.

The "free" is based on Amazon. This is the test month. The Prime Sub via Twitch is always free.