Kai 9000

An open-source AI assistant with persistent memory that runs on Android, iOS, Windows, Mac, Linux, and Web.

Features

- Persistent memory: Kai remembers important details across conversations and uses them automatically - Customizable soul: define the AI's personality and behavior with an editable system prompt - Multi-service fallback: 30 LLM providers with automatic failover - On-device inference: run AI models locally on Android using LiteRT, no internet needed - Tool execution: web search, notifications, calendar events, shell commands, and more - MCP server support: connect to remote tool servers via the Model Context Protocol - Autonomous heartbeat: periodic self-checks that surface anything needing attention - Settings export/import: backup and restore all settings as a JSON file - Encrypted storage: conversations stored locally with encryption - Text to speech: listen to AI responses - Linux Sandbox: on Android, the AI can run shell commands, scripts, and tools in a secure sandboxed Linux environment - Image attachments: attach images to any conversation

Interactive UI

Kai 9000's Interactive UI lets the AI generate full interactive screens, such as quizzes, dashboards, recipes, and brainstorms. Navigate by tapping buttons instead of scrolling through chat.

Linux Sandbox (Android)

On Android, Kai includes a built-in Linux environment that the AI can use to execute shell commands, run scripts, and operate tools on your behalf. This turns Kai from a chat-only assistant into one that can take real action, such as installing packages, processing data, and running Python scripts. - Powered by Alpine Linux: a lightweight ~3 MB download sets up a full Linux userland via proot, no root required - Optional packages: one tap installs bash, curl, wget, git, jq, python3, pip, and Node.js - Interactive terminal: a built-in terminal lets you run commands manually alongside the AI - Secure: everything runs sandboxed inside the app with no access to the host system

Enable it in Settings > Linux Sandbox.

How it works

- Chat: the user sends a message. The AI responds, calling tools (memory, web search, shell, and others) in a loop until it has a final answer. - Memory: the AI stores and recalls facts, preferences, and learnings. Memories that prove useful (5+ hits) can be promoted into the system prompt permanently. - Heartbeat: a background self-check runs every 30 minutes. It reviews memories, pending tasks, and emails. If something needs attention, it notifies the user. Otherwise, it stays silent.

Supported services

Atlas Cloud, Anthropic, OpenAI, Gemini, DeepSeek, Mistral, xAI, OpenRouter, Requesty, Groq, NVIDIA, Cerebras, Ollama Cloud, LongCat, Together AI, Hugging Face, Venice AI, Moonshot AI, Z.AI, MiniMax, AIHubMix, Deep Infra, Fireworks AI, OpenCode, AI Horde, 1min.AI, Perplexity, OpenAI-Compatible API, LiteRT On-Device (Android), and a free tier that needs no API key.

MCP servers

Kai supports the Model Context Protocol for connecting to external tool servers. Go to Settings > Tools > Add MCP Server to connect to any Streamable HTTP MCP endpoint, or pick from a curated list of popular free servers, including Context7, MDN, DeepWiki, Parallel Search, Yahoo Finance, CoinGecko, Jina AI, Open-Meteo Weather, Kiwi.com, Malwarebytes, tldraw, Find-A-Domain, and SubwayInfo NYC.

All popular servers are free. Most require no API key (one-tap add). MCP servers auto-reconnect on app startup.

Integrations

Splinterlands Auto-Battle (Android and Desktop): Kai can automatically play Splinterlands Wild Ranked battles. Configure one or more LLM services in priority order, add your Hive account, and press Start. Kai will continuously find matches, pick teams using LLM-powered strategy, and submit them on-chain. Falls back to a simple greedy picker if all LLM services fail. Available in Settings > Integrations.

License

Apache 2.0