An AI co-host who talks back.
Sidecaster reads your chat and answers out loud through your stream audio, hears you after your wake word, and hypes every follow, sub, and raid by name. One Twitch login, one OBS browser source, and they are on the couch with you.
What sets them apart.
They speak. Never type.
Your Sidecaster talks through your stream audio like a co-host on a mic, and never posts a single message in your chat. Some co-hosts write in chat as a bot account. A voice on the couch and a bot in the feed are different things, and your chat stays yours.
Voice both ways.
Plenty of tools can say a line out loud. Say your wake word and your Sidecaster hears the rest of your sentence and answers back, like a friend on voice chat. The two-way conversation is the part that feels like company.
No keys. One URL.
A Twitch login and one OBS browser source, and they are on your stream. Some tools ask you to bring your own AI accounts and API keys before the voice works. Here the credits cover everything, so there is nothing to wire up.
Some co-hosts watch your screen and react to gameplay on their own. Sidecaster doesn’t — they work from your chat, your mic, and your Twitch events, which keeps your screen private and your setup simple. Big moment? Say your wake word and one sentence, and they run with it. Chat is usually screaming about it anyway, and they read every word.
Comparisons are fine.
Trying is better.
Link your Twitch and you get 1,000 free credits, about 50 minutes of typical co-hosting, no card. Enough for a real stream with your Sidecaster on the couch, not a two-minute demo. If they are not your people, you have lost nothing.