Adult AI roleplay platform for fantasy chat, custom characters, AI girlfriend and boyfriend experiences, anime style companions, scenarios, and AI generated photos/videos.
Character card ecosystem with keyword triggered lorebooks and a 60K context model, sold as one flat subscription that takes cryptocurrency only.

Chub AI is a character-card ecosystem for people who treat roleplay as a configurable system: cards travel between frontends, lorebooks can fire on conditional keywords, conversations branch into full trees, and the model can come from Chub or an outside API. That flexibility is deeper than a conventional companion app, but it also brings technical setup, uneven community writing, and an unusual payment model for the current hosted subscription.
Chub starts with a public repository of character cards and lorebooks, then layers a chat frontend over those files. A card can define personality and dialogue, a Characterbook can carry its own conditional world facts, and local edits can change a borrowed character for one conversation without rewriting the public source.
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The model layer is deliberately open. Chub's hosted Mars integration is the simplest paid route, while OpenAI, Anthropic, Google, OpenRouter, NovelAI, Kobold/Ooba, and compatible reverse proxies can be connected through the same chat settings. Cost, censorship, context, and privacy therefore depend partly on the selected provider.
Chub AI is an uncensored character-card library, roleplay frontend, lorebook repository, and inference gateway. It supports custom and community characters, full chat trees, summaries, images, voice, extensible Stages, and export into formats used by other roleplay clients.
It is closer to a hosted alternative to SillyTavern than to a finished AI girlfriend app. The interface exposes system prompts, post-history instructions, presets, lore budgets, provider connections, and branches that a relationship-first product usually hides.
Chub fits people who collect, write, remix, and move character cards. Its strongest tools solve continuity and portability problems: lorebook entries enter only when relevant, chat branches remain recoverable, and exports are not locked to one frontend.
A guided companion app is easier when model settings, API keys, card quality, and token budgets are unwanted decisions. Chub rewards control and experimentation more than frictionless onboarding.
| Feature | What it does | User benefit | Limitation or note |
|---|---|---|---|
| Portable character cards | Stores definitions, dialogue examples, greetings, and optional Characterbook lore in shareable card formats. | Lets a carefully written character move between Chub and compatible roleplay frontends. | Quality varies because much of the repository is written by community authors. |
| Conditional lorebooks | Activates world facts through primary and secondary keywords, selective logic, probability, recursion, and constant entries. | Keeps setting knowledge available without permanently occupying the character definition. | Poor keywords can make facts trigger too often, too late, or not at all. |
| Chat trees | Preserves swipes and alternative continuations as branches that can be revisited from a full tree view. | Makes experimentation reversible and keeps an abandoned reply path from destroying the preferred scene. | A large tree can become harder to navigate than one linear transcript. |
| Model and API choice | Connects Chub's hosted models or external services including OpenRouter, Anthropic, OpenAI, Google, NovelAI, and local Kobold/Ooba. | Separates the character library from one model company's price, context, or moderation policy. | External providers add their own billing, privacy, and content rules. |
| Stages | Runs sandboxed extensions for expression images, minigames, prompt processing, state, or third-party integrations. | Turns a text conversation into a custom interface or lightweight roleplaying system. | Verified status reduces code risk, but users should never enter API keys or passwords into a Stage. |
| Memory and exports | Adds manual or generated summaries for out-of-context messages and exports chats as JSONL, PNG, or text. | Extends continuity while keeping the conversation portable outside Chub. | Summary quality still depends on the model and the material being compressed. |
A Chub card is both a public discovery item and a reusable roleplay file. It can carry a character definition, example dialogue, greetings, and attached lore, while a user can make chat-specific edits without changing the version other people see.
That portability encourages a large and varied library, but discovery is not the same as curation. Token-heavy definitions, contradictory instructions, and thin dialogue examples can all weaken a card, so popular download counts do not replace reading the definition.
Lorebooks insert facts only after their keys appear in the scanned portion of a conversation. A secondary key can be required, forbidden, or combined through selective logic, while probability prevents an event from firing on every match.
Scan depth determines how many recent messages are checked and token budget limits how much lore can enter. Insertion order affects prompt position, priority decides which facts are removed first, and recursive scanning lets one entry awaken another.
The $20 Mars route removes API-key setup and connects directly to Chub's hosted uncensored models. The current offer advertises its largest hosted model with a 60K context window, while external connections let a roleplayer substitute another commercial or local model.
This flexibility makes price comparisons less tidy. A Chub subscription, an OpenRouter balance, a NovelAI account, and a local Kobold server are different products even though they appear in one provider menu.
Every swipe can become a branch in a conversation graph. The full tree view makes it possible to return to an earlier decision, while chat summaries reintroduce older events after raw messages fall outside the active context.
Stages extend the chat with code. A Stage can show expression art, track game state, alter prompts, or present a custom interface in a sandboxed frame. Verified extensions are reviewed for hostile behavior, but social engineering remains possible.
The current paid offer includes multimedia, and Chub's documentation describes both image generation and Stages that swap character expressions as a conversation changes. Those visuals remain subordinate to the character card rather than opening into a full image studio.
Chub does not publish a detailed matrix of image resolution, quantity, model or action costs on its public documentation. A specialist image platform is easier to budget when controlled visual output matters more than card portability and lore.
Chub AI Image Generation and Expression Stages

Voice is bundled with the single paid tier alongside hosted chat and multimedia. It extends a card-driven session with spoken output rather than providing a separately documented telephone or live-call product.
Public documentation does not break voice into a character count, duration allowance or per-clip price. Treat it as a supporting roleplay feature, not the reason to choose Chub over a companion platform with explicit voice limits.
Chub documents Mars at $20 per month with unlimited messaging and direct integration into the character ecosystem. The current subscription surface presents one hosted tier rather than a ladder of separate context or media plans.
External providers are separate. OpenAI, Anthropic, Google, OpenRouter, and NovelAI charge under their own accounts, while Kobold/Ooba can be free on local hardware or incur GPU rental costs.
Free trial credits are occasional rather than a dependable monthly allowance. The current checkout's cryptocurrency requirement is also a practical limitation for anyone who expects card, PayPal, or app-store billing.
| Tool | Best for | Key advantage | Main limitation | Review or comparison link |
|---|---|---|---|---|
| HammerAI | Offline model operation with local chat files and group roleplay | Chub has a larger card repository, more conditional lore controls, full chat trees, and extensible Stages. | HammerAI packages local models into a desktop app and offers ordinary paid cloud tiers. | HammerAI review |
| JANITOR.AI | Free hosted community characters with less configuration | Chub makes cards, lorebooks, providers, branches, and exports more configurable and portable. | Janitor AI gets a new user into a free hosted conversation faster. | Janitor AI review |
| CrushOn AI | A polished hosted NSFW character library and group chat | Chub exposes model selection, Characterbooks, Stages, and file export. | CrushOn AI requires fewer technical decisions and has a more conventional companion interface. | CrushOn AI review |
HammerAI is the closest match for people who want local control, cards, lorebooks, and multi-character scenes. Janitor AI and CrushOn AI simplify hosted community chat, while SpicyChat AI adds a low-priced route into longer context and memory.
EroPlay AI moves toward a finished multimedia companion experience with custom characters and generated photos or video. Chub remains the specialist choice when card portability, branching, and provider choice matter more than a tightly curated app.
Chub AI is valuable because it treats characters, lore, models, and conversations as separable, portable parts. Full trees and conditional Characterbooks are substantial tools rather than decorative settings.
That architecture asks more from the user. Card quality, provider choice, token budgets, payment method, and extension safety all become active decisions.
Choose Chub for a configurable roleplay library that can outlive one model. Choose a simpler hosted alternative when immediate chat and predictable billing outweigh portability. For configuration steps, model routes and safety notes, use the complete Venus Chub AI guide.
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Chub AI is an uncensored character card library and chat frontend. It hosts community characters and lorebooks, supports full chat tree branching, imports and exports cards and chats, and can use Chub's own models or outside APIs.
A lorebook stores world or character facts behind keywords. When a keyword appears in the scanned messages, the matching entry is inserted into the prompt. Secondary keys, selective logic, probability, recursion, insertion order, priority, scan depth and a token budget control when and how much lore appears.
Chub documents a $20 monthly Mars subscription with unlimited messaging and direct integration. The current paid offer also advertises access to the hosted model suite, voice and multimedia. External APIs such as OpenRouter, Anthropic, OpenAI, NovelAI or a local Kobold/Ooba server are billed or operated separately.
Yes. Character cards and lorebooks can be imported or exported, and chats can be exported as SillyTavern compatible JSONL, PNG or text. Chub also supports full conversation trees rather than forcing every swipe into a single linear transcript.
Chub describes the platform as uncensored and permits a broad range of community characters and interactions. Its terms still apply, and a third party model provider can impose separate content rules when its API is selected.
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