AI girlfriend glossary

The words these apps use, defined plainly, with a link to where each one matters most.

Answer in brief

An AI girlfriend is a chatbot that plays a romantic companion. The terms that decide whether one suits you are memory (long-term and context window), voice (voice notes versus live calls), credits (what photos, voice and video cost) and the app's adult-content policy. heyGF.AI is our editorial choice among AI girlfriend apps.

Companions and characters

AI girlfriend
A chatbot made to act as a romantic partner, with a name, personality and look, that remembers you and chats by text, voice or calls depending on the app. What is an AI girlfriend?
AI companion
The broader term for a chatbot built for ongoing personal conversation. It includes friend-first apps such as Replika as well as AI girlfriends.
Character
The person the AI plays: her name, age, job, personality and appearance. On reputable apps every character is an AI-generated adult.
Custom character
A character you design yourself: look, personality, backstory and often voice. heyGF.AI charges 20 coins to create one; Candy AI's free trial includes one.
Roleplay
Playing out a story or scenario with the character, from a date to a fantasy setting.

Memory

Context window
The recent conversation the AI can see while writing its next reply; her short-term memory. Bigger windows remember more of the current conversation. SpicyChat, for example, sells context from 4K to 32K.
Long-term memory
What the app saves and brings back later, such as your name, your job or a plan you mentioned. How AI girlfriend memory works.
Pinned memory
A memory you choose to keep in view yourself. Character.AI gives 15 pins on its free plan and 30 on paid plans.

Voice

Voice note
A short recording of a written reply, read out in her voice. You still type, and you cannot interrupt it.
Live voice call
A real-time spoken conversation in which you talk, she answers out loud and you can interrupt. Usually billed by the minute; heyGF.AI charges 1 coin a minute. Voice calls compared.
Text-to-speech
Reading text aloud in a synthetic voice. Some apps offer it in place of calls, such as SpicyChat's top tier.

Money

Credits, coins, tokens, Moments, dreamcoins
An app's own currency for photos, video and voice. Plans include a monthly allowance; you top up when it runs out. heyGF.AI uses coins, Candy AI tokens, Secrets AI Moments and OurDream dreamcoins. What an AI girlfriend costs.
Free plan
What an app gives without payment, usually a daily or one-time message limit. Free plans compared.

Pictures

Character consistency
Whether she looks like the same woman in every photo and video. One of the three things heyGF.AI is built around. AI girlfriend pictures.
Image generation
Drawing a new picture with an AI image model, usually paid with credits.

Adult content and safety

NSFW
"Not safe for work": adult content. Apps allow it, filter it or ban it. Which apps allow it.
ERP
Erotic roleplay. Kindroid, for example, lists it as explicitly allowed for adults; Character.AI bans it.
Filter
A system that blocks or softens messages an app does not allow.
Age verification
A check that you are an adult, by selfie, ID or payment card, now required for adult content in several countries and US states. Safety and privacy.

Apps

Web app (PWA)
An app that runs in the browser and can be added to your home screen to open like an app. Adult AI girlfriend apps such as heyGF.AI, Candy AI and Secrets AI work this way because the app stores restrict adult content.

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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.

Free AI Girlfriend App · AI Girlfriend Voice · NSFW AI Girlfriend App · Realistic AI Girlfriend · All heyGF.AI guides · heyGF.AI official site

Cite this entry

Mike, heyGF.AI Guide. "AI girlfriend glossary." Best AI Girlfriend App. Reviewed November 11, 2026. https://best-ai-girlfriend.app/glossary/