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Twitch TTS guide

How to Set Up TTS on Twitch

Add text to speech to your Twitch stream with Blerp in four steps, with a picture of each screen. Want to hear the voices first? Try the Twitch TTS tester.

Set up TTSHow to set it up

What is TTS on Twitch?

TTS (text to speech) reads a viewer's message out loud on your stream. Twitch doesn't have it built in, so you add it with a tool like Blerp that plays it through OBS.

With Blerp, viewers send it with a channel point reward (free in the standard voice), with Bits in the Blerp extension (works on the free plan), or on a cheer, sub or tip alert (Blerp Unlimited).

Add a channel point TTS reward

  1. 1

    Add a Text-to-Speech reward

    Sign in to Blerp with Twitch, open Channel Points, press New Reward and pick Text-to-Speech.

    Blerp's Add a reward window on Channel Points, with Text-to-Speech next to Sound and Video
  2. 2

    Let it read the viewer's message

    The reward reads what the viewer types, up to 500 characters. Free accounts use the standard voice, a system voice on the computer running OBS; Blerp Unlimited lets you pick a character voice. Name it, set its cost and save.

    A Blerp TTS reward set to read the viewer's text, up to 500 characters, in the automatic system voice
  3. 3

    Add Blerp to OBS

    In Blerp's Browser Source settings, drag the Alert Box into OBS. It plays alerts, sounds and TTS.

    Blerp's Alert Box browser source for alerts, sounds and TTS, with Drag into OBS and Copy link buttons
  4. 4

    Test it

    Press Send browser source test, then redeem the reward on Twitch and listen back in an OBS recording.

    Blerp's Play alert preview and Send browser source test buttons for checking a TTS reward

Let viewers send TTS with Bits

Add the Blerp extension to your Twitch channel and turn on the Text-to-Speech library. Viewers pick a voice under your stream, type a message and spend Bits.

Set a character limit, and turn on the moderation queue to approve each message before it plays.

Blerp TTS message settings with a character limit, a moderation queue and reading the viewer's name first

Keep TTS under control

  • Banned words are spoken as “blerp” in rewards, alerts and Bits TTS.
  • Add your own banned words. Blerp's list of slurs and explicit words is on unless you turn it off.
  • Give the reward a cooldown so messages don't stack up.
Blerp's TTS moderation settings: banned words are spoken as blerp, with your own banned words and Blerp's banned list

Questions

Is TTS on Twitch free?

A channel point TTS reward in the standard voice is free, and so is letting viewers send TTS with Bits. Character voices on rewards and TTS on cheer, sub and tip alerts come with Blerp Unlimited. See plans

Does Blerp read Twitch chat aloud?

No. Blerp reads messages viewers send with a reward, Bits or an alert, so regular chat stays quiet.

Which voices can viewers use?

Free rewards use the standard voice. Bits TTS and Blerp Unlimited rewards use character voices from Blerp's library and the voices you add. Twitch TTS voices

Can I test TTS without viewers?

Yes. Messages you send to your own stream from your Blerp page are free tests. TTS tester

Updated October 30, 2026