Read Aloud
A Read aloud button appears on AI chat responses when a voice is available, so you can listen to an answer — or a draft — instead of reading it.
Choosing a voice
Speech is generated by the model pinned to the Speech task in Settings → AI.
Like image generation, speech is never auto-routed to a remote service: what you have written is exactly the thing being sent, so the only way a remote voice is ever used is if you pin one to the Speech task yourself. If no voice is configured, the Read aloud button simply doesn't appear.
Reading a whole script
To hear the whole screenplay, a voice per character, or to hand parts to people at the table, see Table Reads. They use the OS voices by default and the voice pinned here when you pin one.
The other direction
To go from your voice to text, see Dictation — the microphone on the editor toolbar.