Chub AI

What the Hell is Chub.ai? A Quick History

If you've been around the AI block for a while, you probably remember a massive site called CharacterHub, which was basically a giant directory where people uploaded character files. You also probably remember Venus AI, a sleek chat interface that lets you talk to those characters.

Back in 2024, these two merged to create the juggernaut we now know as Chub.ai. Instead of downloading a JSON file from a sketchy Discord server and trying to plug it into a separate chat site, everything is under one roof. Chub.ai is both the massive library where you find the bots and the "tavern" where you actually chat with them. Most importantly? The devs don't care what you do. It is explicitly designed to be an uncensored, 18+ friendly playground.

The Character Library: A Degenerate's Paradise (and a Writer's Dream)

The beating heart of Chub.ai isn't just the AI itself; it's the insane amount of user-generated content. We are talking about hundreds of thousands of characters here.

Finding the Good Stuff (and Hiding the Rest)

Because there are zero content restrictions, the database can get pretty wild. Thankfully, Chub.ai has one of the best tagging and filtering systems in the business. You can instantly toggle off SFW stuff if you're only here for the adult content, or vice versa. Want an established character from your favorite anime or video game? They have thousands. Looking for incredibly specific fetishes, monster girl romance, or sci-fi harems? Just type it into the tags.

You can also easily blacklist tags you hate. If you despise a certain kink or trope, you tell the site to hide it, and you'll never see it on your feed.

V2 Cards: Why These Bots Don't Suck

A lot of older AI sites just used a basic prompt like "Act like a goth girl." That gets boring after three messages. Chub.ai runs on V2 Character Cards. When a dedicated creator builds a bot, they pack it with massive amounts of data: behavioral tics, physical anatomy, emotional triggers, and heavy example dialogue. This means the bots actually sound distinct. A gritty cyberpunk mercenary will swear at you and use slang, while a royal elven princess will speak in high prose.

How it Works: Bring Your Own Key vs. Native Models

Okay, here is where Chub.ai loses some people because it can look a bit complicated at first glance. Think of Chub.ai like a video game console. The website is the console, the characters are the games, but you have to provide the electricity. That electricity is the Large Language Model (LLM).

You have two main ways to make the bots talk:

Method A: API Keys (The Hacker Route)

Chub lets you plug in third-party AI brains using API keys.

• OpenAI / Anthropic: You can use GPT-4o or Claude. They are crazy smart, but if you try to do hardcore NSFW content, they will eventually ban your account. Play stupid games, win stupid prizes.
• OpenRouter: This is what most power users do. OpenRouter acts as a middleman, letting you pay per message for uncensored open-source models like Llama 3 or WizardLM.
• Local Hosting: Got a beefy gaming PC with a massive graphics card? You can run models locally and connect them to Chub for free. It’s 100% private, but setting it up is a massive headache for casuals.

Method B: Chub’s Native Models (The Easy Route)

If looking at API documentation makes your eyes glaze over, Chub.ai offers their own native AI models through a subscription. You just pay a flat monthly fee, select their model from a drop-down menu, and start chatting. No bans, no filters, no complex setups.

Pricing Breakdown: Free, Mercury, or Mars?

Browsing the site and looking at the art is completely free. But if you want to use Chub's servers to actually generate the NSFW text, you need to open your wallet. As of 2026, here is the deal:

Tier	The Cost	What You Actually Get	Who It's For
Free	Zero	Waitlists, slow generation, highly limited testing models.	Looky-loos just testing the waters. Don't expect to have a deep 100-message ERP session here.
Mercury	$5.00 / month	Access to 13B models (like Mistral finetunes and the legendary MythoMax).	Casual users. For five bucks, this is a steal. MythoMax is notoriously unhinged and fantastic for straight-up erotica.
Mars	$20.00 / month	The heavy hitters. 70B+ models (Asha, Mixtral, Soji). Massive memory.	Hardcore roleplayers. If you write multi-paragraph responses and need the bot to actually remember what you did yesterday, you need Mars.

Is the $20 Mars Tier actually worth it?

If you just want to log on, have a quick 10-minute spicy chat, and leave, stick to the $5 Mercury tier. It's cheap and gets the job done. But if you are trying to do a slow-burn romance or an intricate RPG campaign, the cheaper 13B models will forget your character's name and what room you're in pretty fast. The Mars tier gives you access to 70B models, which are exponentially smarter, far more creative, and have the memory to handle long, drawn-out storytelling.

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Curing AI Amnesia: Lorebooks and Stages

Anyone who plays with AI knows the absolute pain of "AI Amnesia." You spend two hours establishing that you have a pet dog named Buster, and out of nowhere, the AI asks, "Who is Buster?"

Chub.ai fixes this with Lorebooks. Instead of typing your whole backstory into the chat and hoping the AI remembers it, you create a hidden dictionary. You write an entry for "Buster," tag it as a dog, and tuck it away. The AI won't even think about it to save processing power. But the second you type the word "Buster" in the chat, the AI instantly pulls that specific entry into its memory bank. It is an absolute game-changer for world-building.

They also have a feature called Stages, which basically lets creators turn a chat into a visual novel. People have coded actual stat sheets, affection meters, and custom backgrounds right into the chat window.

Chub.ai vs. The Rest of the Internet

So, how does it stack up against the competition?

• Vs. Character.AI (C.AI): C.AI has arguably the most "human-sounding" base model on the market, but it is locked down tighter than Fort Knox. You can't even get slightly intimate without the filter blocking you. Chub.ai wins by default for adult users purely because it respects your freedom.
• Vs. JanitorAI: This is the real rivalry. JanitorAI is excellent, free (mostly), and completely uncensored. However, Janitor's interface is geared more toward casuals. Chub.ai gives you vastly superior tools, like detailed generation settings (temperature, top_p, repetition penalties) and better Lorebook management. Chub is for the power users.
• Vs. SpicyChat: SpicyChat is decent if you want to stay strictly in the free lane, but the queue times can be brutal. Plus, Chub's premium Mars models completely blow SpicyChat's native models out of the water in terms of writing quality.

A Quick Word on Privacy (Don't Be Stupid)

If you are doing highly explicit, deeply personal NSFW roleplay, you need to care about your data. Chub.ai is pretty solid about this. If you use their Mercury or Mars subscription, your data is stored on their encrypted servers. Nobody is reading your weird chats.

However, if you connect a third-party API like OpenAI to Chub, you are sending your chat logs directly to OpenAI's corporate servers. And they *do* monitor that stuff. If privacy is your absolute number one concern, either stick to Chub's native subscription or learn how to run a local model on your own PC so nothing ever touches the cloud.

Sign Up, if you are into roleplay

If you are serious about AI roleplay, erotic or otherwise, Chub.ai is the best tool on the market right now. Period.

It doesn't hold your hand, and the interface might take an hour or two to figure out, but the payoff is massive. The ability to plug in whatever AI model you want, combined with the power of Lorebooks to keep the AI from going stupid, makes it a writer's paradise. If you are sick of the sanitized, corporate AI experience and just want to let loose, Chub.ai is exactly where you want to be.

FAQ: What Everyone is Asking

Do I have to pay to use Chub.ai?

Nope, browsing characters, making your own bots, and reading forums is totally free. But if you want to actually chat with good models without hitting massive wait times, you either need to pony up for their $5/$20 subscriptions or bring your own API key.

Is there a Chub.ai App on my phone?

Because Apple and Google hate porn, you won't find this in the App Store or Google Play. But the mobile website is super clean and works perfectly on your phone's browser. Just bookmark it.

Can the bots send me pictures?

Yes. Many character cards come loaded with NSFW images, and if you have the right API setup, the AI can actually generate uncensored, custom images on the fly based on what is happening in the chat.

Do I need a "Jailbreak" prompt?

If you buy the Mercury or Mars tier, no. Those models are completely uncensored right out of the box. You only need to mess around with jailbreak prompts if you are trying to force a filtered model (like Claude or ChatGPT) to do dirty stuff through an API connection.