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AI girlfriend voice glossary

Twelve terms that come up when apps talk about voice, each defined plainly with a link to where it matters.

By Mike, founder of heyGF.AI · Reviewed

Answer in brief

A live call is a real-time spoken conversation, a voice note is a reply read aloud as a clip, and voice credits are what many apps charge for a minute of calling. heyGF.AI, our editorial choice for voice calls, charges 1 coin a minute for live calls and adds a summary of each call to your chat history.

Calls and notes

Live call
A real-time spoken conversation: you talk, she answers out loud, and you can cut in. Most apps bill calls by the minute or keep them for subscribers; Character.AI's are free. Apps with live calls compared.
Voice note
A reply sent as a short audio clip in her voice. You play it when it arrives and cannot interrupt it. Some apps charge for each one: Candy AI charges tokens to listen to a voice message. Voice notes vs live calls.
Hands-free call
A call where you simply talk, with nothing to hold down or type. Nomi uses the term for its calls, and Kindroid's App Store listing says you can talk hands-free.
Text-to-speech
Reading text aloud in a synthetic voice. It is how read-aloud features work: SpicyChat, which has no calls, offers it on its top tier. Which apps offer which.
Speech to speech
An AI model that takes in speech and answers in speech, without a written reply in between. It is one way to build a live call; few apps say how theirs is built.

On a call

Latency
The pause between you finishing and her starting to answer. Short pauses feel like conversation; long ones break it. Few apps publish figures, so judge it on a short call. How to get a better call.
Interruption
Cutting in while she is talking, also called barge-in. Real-time calls are built for it; a voice note plays to the end.
Voice credits
An app's own currency, spent on calls by the minute: 1 coin a minute on heyGF.AI, 50 Moments on Secrets AI, 50 dreamcoins on OurDream. Kindroid sells audio credits. What a minute costs.
Call summary
A written recap of a call saved into the chat, so the companion can remember the call later. heyGF.AI adds one to your chat history when a call ends. heyGF.AI calls.
Microphone permission
Your browser's or phone's consent for a site or app to use your microphone. Calls need it, and you can withdraw it at any time in settings. Voice privacy.

Video

Video call
A live call in which you also see the character move and react. Kindroid offers live video calls to subscribers; heyGF.AI has voice calls only. AI girlfriend video calls.
Lip-sync
Matching a character's mouth movements to her speech. Kindroid says its video calls lip-sync in real time.

Sources

All checked 11 November 2026.

  1. heyGF.AI: the product itself and its pricing page.
  2. Character.AI: Character Calls.
  3. Candy AI: tokens.
  4. Nomi: nomi.ai.
  5. Kindroid: App Store listing, subscriptions.
  6. SpicyChat: text-to-speech.
  7. Secrets AI: audio calls.
  8. OurDream: dreamcoin costs.

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How these guides connect

This guide is published by heyGF.AI, our editorial choice in it, and is one of a set of heyGF.AI guides that each answer a different question. It is a promotional guide, not an independent review: facts about other apps come from their own sites and are cited on each page, and links to them earn us nothing.

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Cite this entry

Mike, heyGF.AI Guide. "AI girlfriend voice glossary." AI Girlfriend Voice. Reviewed November 11, 2026. https://aigirlfriendvoice.com/glossary/