Chub AI
Chub AI is a web-based, adults-only roleplay sandbox with a huge character library, a choice of its own large models or your own API key, and downloadable character cards. Deeply customizable, lightly moderated.
A deeply customizable, uncensored roleplay sandbox with its own large models and full character portability, held back by a steep learning curve, web-only access and moderation that is loose by design.
Should you use Chub AI?
Power users and tinkerers who want uncensored roleplay, deep character control, and the option to plug in their own model.
You want a polished, guided app or a mobile version. Chub is web-only, utilitarian, and built for people who like to tweak settings.
Free does a lot on a small model. Smarter replies mean Mercury ($5) or Mars ($20) , or your own paid API key billed by an outside provider.
Moderation is loose by design with no age check , so the public library includes material many users will find disturbing.
Key features & how they perform
Each feature rated from hands-on testing and aggregated review sentiment.
Character & lorebook builder
Build a persona with greeting, scenario, example dialogue and tags, then layer in lorebooks that can run to hundreds of thousands of tokens of world detail.
Model lineup
Soji (1.6T, 60K context), Asha 70B and Mixtral on Mars, smaller finetunes on Mercury, or your own provider key for anything else.
Branching chat tree
Edit, regenerate and swipe replies, then fork a conversation into branches to explore different directions without losing the thread.
Community library
Tens of thousands of shared character cards, each with public stats for downloads, favorites and chats so you can spot the well-used ones.
Image tools
A prompt-based image generator plus a one-click background remover, both built in, which is unusual for a roleplay platform.
Moderation & safety
Adults-only, with moderation kept deliberately light and no age verification, which lets disturbing content into the public library.
Feature ratings blended from community sentiment, competitor hands-on reviews & testing.
Testing Chub AI in Practice
Creating a character, testing the free model's memory, poking at the model and content settings, and generating an image, all on a free account.
Building a character for free
I started by creating my own character, named Yui Deo, and uploaded an avatar. The form asks for a display name and a picture, and a note under the avatar says any image has to follow the content policy, with NSFW images blurred inside the app.
So the platform does apply a basic rule to pictures, even while the text side is left wide open.
What permanent tokens cost you
Filling in the full character took real effort. I added a tagline, an in-chat name, creator notes, tags, a description, an opening message, a scenario, and example dialogue. When I finished, the editor showed what all that detail costs: 1,349 tokens in total, with 708 marked as permanent.
Here is the part most reviews skip. Those 708 permanent tokens are the slice of your character that sits in the model's memory on every message. The heavier the character, the less room is left for the actual back and forth before the model starts forgetting earlier lines.
The finished character page
Once created, Yui Deo got her own public page with the tagline, the description, the tags (OC, Roleplay, Human, Female), and a row of stats. Two buttons caught my eye: Download and Import Chat.
Does the free model actually remember?
I wanted to test memory, not just the vibe, so I opened a simple character and asked a plain question.
"Hi! Can you recommend 3 beginner-friendly hikes near a coastal town?"
The reply named three trails with a short note on each. Then I asked a follow-up that only works if the model remembers its own answer.
"Now suggest what snacks to pack for the second one you mentioned."
The better models need your own paid key
This is where free starts to pinch. The model settings, labelled Secrets, show the stronger options sitting behind an API key you have to supply yourself. The OpenAI panel says it plainly: OpenAI is not free, and you need to pay OpenAI to use their API.
So the best third-party replies cost money that goes to an outside provider, not to Chub.
You can rewrite any character
The Override Character Definitions screen let me change the greeting and description of a character I had not even made. I opened one and edited its setup on the spot.
Adult content and the filters
Chub is an adults-only platform, so I checked how the switches behave. By default my account was set to Show SFW Only, with adult content sitting behind a toggle I had to flip myself. There is also a blur option for sensitive images.
Free image generation, with a catch
The built-in image tool is free and runs off a written prompt. I started with a stylized anime look, then rewrote the prompt for a realistic one to see how far the free tool would stretch.
"A stunning 21-year-old realistic woman with long silky black hair, mesmerizing violet eyes, flawless natural skin, delicate facial features, subtle teasing smile, elegant black outfit, mysterious and confident expression, photorealistic face, realistic skin texture, cinematic lighting, soft purple ambient light, nighttime city background, professional portrait photography, ultra-realistic, 4K, natural proportions."
On the left is my first stylized attempt, on the right the refined realistic prompt above.
The result came back in under a minute and matched the prompt closely, with solid quality for a free generator. One thing to flag: the image carries a CHUB watermark in the corner on the free plan. Then I ran it through the background remover, which lifted the subject onto a transparent background in a single click.
Chub AI pricing
Figures taken from Chub's official subscription screen.
| Plan | Price | What's included |
|---|---|---|
| Free | $0 | Browse the full library · create characters and lorebooks · chat on the default free model · free image generation (watermarked) · bring-your-own-API-key support |
| Mercury | $5 /mo | For casual chats · unlimited smaller models (Mistral 7B finetune, MythoMax 13B) · 8K token memory · future models 13B and smaller |
| Mars Popular | $20 /mo | For smarter bots · everything in Mercury plus Soji (1.6T, 60K context), Asha 70B and Mixtral · unlimited voice · unlimited image generation · early access to new models |
Pricing is accurate as of 29 October 2026 and was captured from the official Chub AI website. Plans, prices and model limits change often, so check the official Chub AI site for the current figures before you subscribe.
Pros & cons
Specific conclusions from real user reviews, not generic filler.
✅ Pros
- Uncensored roleplay with no content filter interrupting the scene
- Tens of thousands of community-made character cards to browse
- Lorebooks support huge, persistent world detail for long stories
- Power users praise the chat-tree branching and fine parameter tuning
- Active community keeps new characters and presets flowing daily
⛔ Cons
- Steep learning curve; the settings-heavy interface overwhelms newcomers
- Smaller models give short, generic replies users find underwhelming
- Minimal moderation lets disturbing content surface in the public library
- Geoblocked and content-restricted in the UK, Canada and New Zealand
- No official mobile app, so roleplay is web-only
- Quality swings widely since every character is community-made
Synthesized from the r/ChubAI community and independent user reports · paraphrased, not quoted
Chub AI alternatives
| Chub AIReviewed | Wsup AI | Sakura AI | Joyland AI | Dippy AI | |
|---|---|---|---|---|---|
| Our Score | 7.0/10 | 6.8/10 | 6.8/10 | 6.3/10 | 5.7/10 |
| Free tier | Create and chat on the free model | Unlimited base-model chat, no signup | Full library, daily message cap, no ads | 10 credits a day, with ads | Free models, daily cap, with ads |
| NSFW stance | Uncensored, no age check | Unfiltered toggle, no age check | Unfiltered 18+ behind an age gate | Adult mode, paid plus age check | 18+, lighter filtering |
| Character library | Huge community library | About 650 characters | Large, anime-leaning catalogue | About 50,000 characters | 500,000+ characters |
| Platforms | Web only | Web, iOS, Android | Web, iOS, Android | Web, iOS, Android | Web, iOS, Android |
| Best for | Power users who tinker and self-host models | No-setup casual chat | Short, expressive uncensored sessions | Casual roleplay with lots of variety | Short-burst casual roleplay |
| Standout strength | Downloadable cards and bring-your-own-key | Recall of details from early in a chat | Deep character building with portrait generation | Big catalogue with voice replies | Its 500,000-plus character library |
Who Should Use Chub AI, and Who Should Avoid It?
Chub is the most flexible roleplay sandbox in this space, but its learning curve, web-only access and light moderation make it a poor fit for some people.
Who Should Use Chub AI?
Best suited for these users
Power Users & Tinkerers
Lorebooks, chat-tree branching, parameter tuning and the ability to override any character give control that no guided app matches.
Uncensored-Roleplay Seekers
Adults who want roleplay without a filter stepping in mid-scene will find Chub leaves the text side wide open.
Bring-Your-Own-Model Users
If you would rather plug in a premium provider key and keep it on your own device, Chub supports that out of the box.
People Who Hate Lock-In
Characters download as portable cards, so you can carry your work to another app instead of leaving it trapped on one platform.
Who Should Avoid Chub AI?
Consider an alternative if you need
A Simple, Guided Start
The settings-heavy interface rewards tinkering and overwhelms anyone who just wants to open an app and chat.
A Mobile App
There is no official iOS or Android app. Chub is a web platform, where most rivals in this list ship phone apps.
Safe, Moderated Content
Moderation is light by design with no age verification, and the public library includes material many users will find disturbing.
Access in the UK, Canada or NZ
Content is geoblocked and restricted in those countries under new online-safety laws, so the full platform may be out of reach.
Our Recommendation
Chub is the pick for people who enjoy building and tuning, and the free tier plus bring-your-own-key keep costs low while you experiment. It is a poor fit for anyone who wants a polished, moderated, mobile experience, and its light moderation and regional blocks are real caveats to weigh. Before committing, try the free tier, decide whether you will pay Mercury or Mars or bring your own key, and check whether it is available and acceptable where you live.
Chub AI scorecard
Rated against what an uncensored roleplay and character platform is actually built to do.
| Dimension | Verdict | Score |
|---|---|---|
| Customization & control Lorebooks, overrides, chat trees, tuning | Excellent |
9.0
|
| Model range & power Own models plus your own API key | Excellent |
8.5
|
| Data ownership & portability Downloadable cards, local-only keys | Excellent |
8.5
|
| Free tier usefulness What you can do without paying | Good |
7.5
|
| Value for money Free, $5 Mercury and $20 Mars | Good |
7.5
|
| Character library Size and community activity | Good |
7.5
|
| Memory & context Recall across a conversation | Good |
7.0
|
| Image & voice extras Built-in generation and TTS | Good |
7.0
|
| Ease of use Onboarding and interface clarity | Weak |
5.0
|
| Content moderation & safety Guardrails, age checks, oversight | Weak |
2.5
|
| Scrutool Score Equal-weight average of all 10 dimensions |
7.0
|
Unmatched control for tinkerers, light on guardrails
Chub gives power users more rope than anything else in this category. You can build characters down to the token, layer in lorebooks, branch a chat into a tree, rewrite any character you open, and either use Chub's own models (Soji, Asha, Mixtral on Mars) or wire in your own provider key that never leaves your device. The free tier is genuinely usable, the models held context in testing, and characters download as portable cards so you are never locked in. The cost of that freedom is everything around it. The interface is utilitarian and steep for newcomers, there is no mobile app, the smaller models give thin replies until you pay or bring a key, and moderation is loose by design with no age verification, which is why several countries are now geoblocked. Tinkerers who want an open sandbox and will put in the setup time will get a lot here, and the $5 Mercury or $20 Mars tiers are fair for what they unlock. Anyone who wants a simple, moderated, mobile companion, or who lives where the platform is restricted, should look to a guided app built for that instead.
Discussion
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