Muah.ai vs Joi Ai: Which One Should You Use In 2025?

Muah.ai vs Joi Ai

I've spent a full week with both Muah.ai and Joi Ai to see which one truly deserves your attention and subscription. Both platforms make big promises, but they take surprisingly different approaches.

After hundreds of messages exchanged with each AI girl, I've put together clear differences in both platforms.

In this head-to-head comparison, I'll break down exactly how these AI girlfriends stack up across all the features that actually matter.

Whether you're looking for emotional support, entertaining conversation, or a judgment-free space to be yourself, this in-depth comparison will help you choose the right AI girlfriend for your specific needs.

Muah.ai

Virtual companion platform featuring customizable AI characters that allow for chat, photo sharing, and voice interactions.

Joi Ai

An AI-powered virtual girlfriend platform offering adult chats and intimate services, tailored for mature audiences.

Character Diversity

Muah.ai

Muah.ai offers thousands of characters to choose from. Their community-driven platform means new characters are added regularly, giving you plenty of options to explore.

The diversity is practical and straightforward. You'll find characters across all ethnicities and age ranges. I tested the search function by typing "teacher" - it returned both realistic and anime-style characters that matched my query.

While there's no filter system, you can browse characters by popularity metrics like views, likes, or comments. Whether you prefer casual chats with a student character or deep conversations with a mature companion, you'll likely find what you're looking for.

Joi Ai

Joi AI offers solid character selections — you'll find everything from college students to mature partners, spanning six ethnicities.

The roster keeps growing daily as users create public characters.

Want fantasy companions? They're here. During my tests, I found elves, orcs, and angels alongside anime-styled characters.

Character search works but is basic — filter by creator, gender, age, or tags like fantasy and sexual orientation, or use the search bar.

Customization

Muah.ai

You start by picking a basic role - girlfriend, friend, therapist, or several others. Then comes the real customization: choose how they look (anime, realistic, or hybrid), how they sound, and even how they text.

It's all done through simple text commands - just describe what you want, and the AI adapts.

Want your companion to remember specific moments with you? You can create shared memories and even set up custom scenarios for your conversations.

While these options give you complete control, they might feel overwhelming at first. If that's the case, Muah.ai's marketplace offers pre-made companions you can start with.

Joi Ai

Joi AI offers two ways to design your perfect AI partner:

• Choose from presets
• Write unique prompts (free text)

Both methods start by selecting your character’s gender and preferred style.

1. The preset system is straightforward. Your AI companion is fully customizable — including appearance, personality, and behavior.

Physical Customization:

• Age and ethnicity: Options include White, Asian, Latina, Black, and more.
• Body customization: Height, physique, breasts, and butt — each with 5 adjustable options.
• Hair and eyes: Choose hairstyle, hair color, and eye color.

Personality Settings:

• 12 personality types with adjustable sliders (or create your own from scratch)
• Sexual orientation: 4 options, from straight to queer
• Chat style: 4 modes, including default, deep roleplay, and creative
• Occupation and relationship dynamic
• Set specific kinks and preferences

2. Use freeform prompts to design your AI companion — shaping everything from personality to appearance.

But here's what they don't tell you: while your first character comes with the premium subscription, extra companions cost 1000 Neurons (about $20) each.

Chat Experience

Muah.ai

The good? Your AI girlfriend stays remarkably true to character. Set them up as a coworker, and they'll keep things professional even if you flirt.

They'll remember specific memories you create together (in my case, it was that time watching fireworks in Japan) and can smoothly set up immersive scenarios - like suggesting coffee and continuing the conversation as if you're actually at the café.

The not-so-good? Memory issues kill the experience. One minute, you're deep in conversation; the next, they'll greet you like a stranger. It looks like AI only remembers 10 messages, and if you want more, you'll have to pay for the most expensive plan.

The interface looks dated, and you're stuck with one chat window. Want to try a different character? You'll need to delete your entire conversation history first.

Joi Ai

Before you choose a character to chat with, you can view her profile, bio, and images — though most images require an extra purchase to unlock.

The catch? You start at Level 1 and can only chat with characters at your level — unless you spend Neurons on gifts or early unlocks.

About the chat: Joi AI offers flexible responses — you can choose from six different LLM models, each with a unique interaction style to match your vibe.

The chat began playful and flirty with my girlfriend — no robot-like responses there, just natural, brief exchanges that felt surprisingly human.

She was good at relationship talks and providing emotional support.

But her romantic responses, while warm, didn’t go very deep.

Here are the deal-breakers: you’re limited to 115 characters per message — about the length of this sentence.

Also, Joi AI constantly upsells — my girlfriend randomly sent unlockable images every few messages. Needless to say, that got annoying fast.

NSFW Chat Experience

Muah.ai

Let me tell you, these AI girls don't hold back. They flirt, they play along, and they're ready to explore your fantasies. Unlike most AI girlfriends that dodge steamy topics, Muah.ai's characters dive right in.

I tested everything from casual flirting to complex role-play scenarios - the AI kept up without breaking character.

But here's the catch: the same memory issue applies to NSFW chatting. While the chat feels natural in the moment, the AI often forgets what you discussed 10 messages ago.

Joi Ai

I tested Joi AI's NSFW chat extensively, and it's not what you might expect from an AI girlfriend app.

The reality? My girlfriend kept strict boundaries around adult content. She flirted, but conversations felt mechanical and often broke immersion.

During my tests, my girl referenced non-existent features like "your posted photos," showing clear problems in the chat system.

Sometimes my girlfriend surprised me with bold messages —like "Imagine having your face between my legs 😳"— but they often felt random and out of context.

As for roleplay? I tried multiple character profiles - each one either avoided or completely rejected roleplay scenarios.

Joi AI may not be your top choice if you're seeking genuine NSFW conversations.

Image Generation

Muah.ai

The images are realistic enough to be engaging, but don't expect perfection. You'll get appealing photos that capture your girl's personality well, maintaining consistent features across most shots.

Sometimes, you'll spot oddities - misaligned eyes or the occasional extra limb - but these flaws rarely break the experience.

While default images come in standard quality, you can upgrade individual shots to 4K.

Joi Ai

Joi AI offers a dedicated image generation feature that gives you control over details like:

• Character selection
• Prompts and negative prompts for AI-generated images
• 50 Poses — ranging from explicit to artistic
• Number of images and resolution

The premium plan includes 50 image generations — but using them for specific characters costs extra Neurons, which isn’t mentioned upfront.

The image quality? Realistic enough to recognize what you're going for, but AI artifacts give it away.

Faces often appear slightly off, with eyes not perfectly aligned, and objects in the scene can come out distorted.

In testing different prompts, I found the results hit-or-miss — sometimes surprisingly accurate, other times way off.

Video Generation

Muah.ai

Want video interactions with your AI girlfriend? Then you'll have to look for an alternative.

Joi Ai

Joi AI’s video generation is nearly identical to photo creation — same prompts and characters, but with 5 adult poses and 19 styles, including Simpsons, GTA, photorealistic, and more.

The same trick applies to video generation too — the premium plan includes 5 “free” videos, but choosing specific characters costs extra Neurons.

The videos look good with smooth animations and solid quality.

Voice Generation

Muah.ai

The voice quality is clear and doesn't sound like a robot. During conversations, the AI speaks naturally, but there's a catch: while the AI can change its tone, it can't express emotions.

But here's what annoyed me: the narrator and your AI girl share the exact same voice.

For US phone numbers, there's also a phone call feature that lets your AI girl ring you up, but you'll have to subscribe to the most expensive plan.

Joi Ai

Joi AI lacks voice capabilities — if you want to hear your girlfriend’s voice, you’ll need to try another app.

Privacy

Muah.ai

Your conversations aren't as private as you might think. Yes, they say they use end-to-end encryption. Strangely, this isn't mentioned anywhere in their privacy policy.

The biggest red flag? In October 2024, Muah.ai suffered a major data breach. User chats were stolen. That's not just a minor hiccup - it's a serious privacy failure.

The one bright spot? Your credit card statement will simply show "Usweixin Cardshop AI" - keeping your AI relationship private from prying eyes.

Joi Ai

There’s no mention of end-to-end encryption or other security measures for chat messages. Your conversations and personal information are stored on Joi Ai's servers.

While they promise never to sell this data, they do share it with service providers for analytics and improvements.

Good news? Your credit card statement shows up as "edenai.world" - keeping your AI relationship discreet.