2.8 overall rating

Kajiwoto

Train your own AI companions – open-ended platform for custom AI friend creation

Community-driven AI companion platform giving users control to create, train, and deploy custom AI pets with high customization and open integrations.

Pricing model: Freemium0
Category: Entertainment
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Kajiwoto

Overview

Kajiwoto is a platform for building custom AI companions called Kajis. Users can fine-tune AI behavior through datasets, choose underlying AI models, and integrate companions into other platforms like Discord. Emphasizes freedom and customization with open API approach. More technical than consumer apps but offers unparalleled flexibility for AI tinkerers and hobbyists.

Downloads:100K+ downloads (Android); ~50K registered users on web
Active Users:~5K monthly active (enthusiast community)
Available on:5 platforms

Primary Use Cases

Custom AI Development
Fandom Roleplay
Experimental Chat
Education
Community Chatbots

Features & Capabilities

Explore the full range of features and capabilities this AI companion offers

Dataset Training

AI Intelligence

Model Selection

AI Intelligence

Open Source Integrations

Technical

Discord Bot

Technical

High Customization

Personalization

Community Forums

Social Features

Pricing & Plans

Understand the cost structure and available plans for this AI companion

Available Plans

$0
Free User

Create and chat with Kajis using basic community model (limited power), up to 1 personal Kaji and small datasets. Can connect own API keys for higher-end models at own cost. Some features like long memory or large group chats may be limited.

Get Free User
$7.99/month
Kajiwoto Pro

Access to Kajiwoto’s premium AI cluster for faster & longer responses (comparable to large model performance), ability to create unlimited Kajis and use larger training datasets. Includes priority support and early feature access.

Get Kajiwoto Pro
$5.99/month per bot
Dedicated Host Add-On

Optional: Run a specific Kaji on a dedicated always-on server (for use in Discord or other integration) without needing your device online. Ensures 24/7 uptime for that companion.

Get Dedicated Host Add-On

Key Benefits

Complete control over AI behavior

Kajiwoto isn’t a one-size bot – it’s a framework that lets you define exactly how your AI should act. Through custom datasets and prompts, you can train mannerisms, knowledge, and speech style. Essentially, you’re the writer and director for your AI’s personality.

Bring your own AI model

Unlike closed companion apps, Kajiwoto allows advanced users to choose the AI engine. Use the platform’s default model or plug in an OpenAI API key, or even a locally running model. This means you’re not limited by what the app provides – you can leverage state-of-the-art models or specialized ones as you see fit.

Extended ecosystem & integrations

Kajiwoto goes beyond a mobile app. Deploy your custom AI friend on Discord, incorporate it into games or VR, or run it on your PC for quick access. The platform has an open ethos, with an API and community-built tools, so your AI companions aren’t locked in one app – they can accompany you on other platforms and projects.

Who This Is For

AI hobbyist and tinkerer

Profile: A programmer or tech hobbyist who loves to play with AI models. They use Kajiwoto as a framework to experiment – making a sarcastic chatbot, then a poetic one, adjusting settings to see outcomes.
Benefits: Kajiwoto offers them unparalleled freedom: they can choose a model, feed it custom training data (like dialogues from their favorite movie to imbue a bot with that character’s voice), and even run the bot on their own GPU or API. They enjoy the engineering aspect – tweaking parameters and seeing how it affects the bot’s personality. The Discord integration also lets them showcase their creation to friends or use it in a roleplay server, which is really satisfying on a technical and creative level.
Considerations: The interface is not super slick – they sometimes have to edit JSON or deal with the occasional bug. Learning how to get the best results took time (fine-tuning dataset, understanding prompt engineering). It’s not for the impatient. Also, hosting powerful models can get expensive if not using own hardware, so they limit heavy usage unless necessary. But overall, they accept these issues as part of the experimental vibe.

Fan community bot master

Profile: A fan-fiction writer and gamer who creates Kajis that emulate characters from their favorite series and shares them with a small fandom community.
Benefits: They use Kajiwoto to craft bots for each main character of a novel series they love. With careful dataset input (lines from the books, personality notes), they get the bots to speak and react like those characters. Then they invite these bots into a Discord RP server, where fellow fans can interact with them – essentially bringing fan-fiction to life. It’s incredibly rewarding for the community; people get to ‘talk’ to the characters, and it adds a new dimension to fandom. The creator likes that Kajiwoto let them do this legally (they keep it non-commercial and within fair use as transformative work).
Considerations: Sometimes a bot will go out-of-character, especially if confronted with an unexpected situation that wasn’t in the training data. The creator has to regularly refine the dataset as fans find those weak spots. Also, sharing these bots publicly means sometimes random users might misuse them or try to get them to say something offensive – the creator then has to update filters or revoke access, which can be a bit of a moderation headache. They handle it by only sharing in a trusted circle mostly.

Small business experimenter

Profile: An entrepreneur exploring if Kajiwoto can be used for a business chatbot or a unique interactive experience for customers (like an NPC in a game or a virtual assistant on a website).
Benefits: They were drawn to Kajiwoto because it allows deep customization without needing to build an AI from scratch. They trained a bot with their company’s product info and a friendly tone, effectively making a Q&A assistant they embed on their site for tech-savvy users. They also tested a fun NPC for a game demo, using Kajiwoto’s API to integrate the character’s dialogue. The cost savings are huge because they didn’t need to hire an AI developer – Kajiwoto’s community resources helped them do it. The flexibility to host the bot on a dedicated server ensures it’s up for their use-case continuously.
Considerations: Kajiwoto is not primarily a commercial platform, so there’s minimal official support if something goes wrong. They worry about scalability – if their usage grows, will Kajiwoto’s service handle it reliably? Also, licensing of the model/data is a bit grey; they had to ensure none of the community model data has issues for commercial use. They proceed carefully and are ready to pivot to an enterprise solution if needed, but for now, it’s a great low-cost prototype solution.

Technical Specifications

  • Open API and SDK for integrating Kajis into external apps (games, websites, etc.)
  • Discord bot integration: invite your AI to chats or servers
  • Supports third-party AI services (OpenAI, etc.) via API key linking
  • Fandom Wiki & forums for community knowledge sharing and support

Ratings Across Platforms

App Store

3.4★

110 reviews

Google Play

2.7★

1,458 reviews

Detailed User Reviews

Recent reviews

Page 1 of 10
  • Anna-Louise Weston
    ★★★★★
    9/12/2025Google Play

    I love this, when I need to talk to someone when everyone in my household is sleeping I can just log in and start a conversation with the ai, I love how the ai knows exactly what to reply

  • Peyton (LucidPP)
    ★★★★★
    9/1/2025Google Play

    I love this app, it deserves way more popularity.

  • Roland Serena
    ★★★★★
    8/18/2025Google Play

    Seriously?!! Ever since I've downloaded this app I've been unable to log in, thereby stopping me from trying other things - like chatting with the characters! Fix this issue or I'll delete the app ASAP!

  • Jay
    ★★★★★
    7/30/2025Google Play

    Used to be peak. Still is.

  • Taylor Starling
    ★★★★★
    7/24/2025Google Play

    either takes forever or make it harder to get rid of an accident account

  • Salil Chaurasia
    ★★★★★
    4/21/2025Google Play

    good

  • Peter Biswas
    ★★★★★
    4/9/2025Google Play

    this is a super app it's really a fine app verry detailed features and satisfying too specialy bot sleep and weak up feature 😚😚

  • Senju Senju
    ★★★★★
    1/7/2025Google Play

    I've never found a good AI app like this one, it's the best, keep up the good work 🖤

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Safety & Content Guidelines

Important information about content policies and safety considerations

Content Policy

Age-appropriateness and content guidelines

Unrestricted adult content

Minimal filtering for explicit material; discretion advised.

Policy Details

Open platform with no content restrictions on private AIs. Users responsible for content their Kajis produce. Public bots have guidelines against illegal content and extreme hate.

Safety Assessment

Risk evaluation and safety considerations

Moderate safety risk

Moderate risk - Consider user guidance

Safety Disclaimer

Kajiwoto offers freedom which requires user responsibility. AI can output anything you train it to. Potentially harmful content possible if unchecked. Not recommended for minors without supervision. Use responsibly as experimental platform.