MeMakie · AI Tools Index

← All AI tools

Kai 9000 Review

kai9000.com →

Open-source cross-platform AI assistant that runs locally with persistent memory, tool execution, autonomous background tasks, and support for 8+ AI providers.

Companion AppsChat Frontends & ClientsChatbots With Memory

Verdict

Kai 9000 is a technically impressive open-source AI assistant built with Kotlin Multiplatform, available on Android, iOS, Windows, Mac, Linux, and web. Its standout features include fully offline inference via Gemma 4, persistent memory that auto-promotes frequent facts into the system prompt, and autonomous background heartbeat checks. The main tradeoff is that its breadth of features and self-hosted model support skews toward technically capable users.

What it does

An open-source AI powerhouse with persistent memory that runs locally in your pocket.

Best for

Individuals seeking a private, customizable, and locally-run AI assistant with persistent memory.

At a glance

Free planYes
Login requiredNo
MemoryYes
VoiceNo
Image generationNo
Group chatNo
Mobile appYes
NSFW policyNot stated
PricingFree — Open source, free; API provider costs may apply

Pros & cons

Pros
  • Fully offline inference with Gemma 4
  • Persistent memory with auto-promotion
  • Cross-platform (Android, iOS, Windows, Mac, Linux, Web)
  • Supports 8+ AI providers with fallback chain
  • Tool execution: web search, calendar, shell commands
  • Open source and encrypted locally
Cons
  • Requires technical setup for advanced features
  • No dedicated voice mode
  • AI provider API costs not included

Related tools

OOLISSwarmClawHermes AgentAGiXTBig-AGILiveblocks

Frequently asked

Is Kai 9000 free to use?
Yes. Kai 9000 has a free plan — Open source, free; API provider costs may apply
Does Kai 9000 have memory?
Yes. Kai 9000 retains conversation memory across sessions.
Can Kai 9000 do voice or images?
Voice: no. Image generation: no.
What are the best alternatives to Kai 9000?
Browse the AI Tools Directory for related tools.

Looking for an alternative?

MeMakie is an AI character chat platform with persistent memory, group chat, and a community feed of user-built characters. Free to start.

Try MeMakie → Browse more tools

Notes from users

Concrete observations only — pricing changes, real-world feature behavior, what didn't work for you. Vague hot-takes get filtered out by automated review. No links allowed.

No comments yet. Be the first to add a real-world note about Kai 9000.

Add a note →

Spot something wrong? Suggest an update →