Features - Add copy-to-clipboard button for code blocks Fixes - Filter out Gemini API responses marked as internal thoughts - Add size safeguards for PDF and image compression failures Improvements - Highlight currently selected model in model picker - Improve Linux sandbox interactive interface - Adjust Gemma 4 device performance expectations - Upgrade BouncyCastle and remove version checker dependency - UI polish and alignment

An open-source AI assistant with persistent memory that runs on Android, iOS, Windows, Mac, Linux, and Web. AI That Builds Screens, Not Just Text Kai 9000's Interactive UI lets the AI generate full interactive screens — quizzes, dashboards, recipes, brainstorms, and more. Navigate by tapping buttons instead of scrolling through chat. 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 — 17 LLM providers with automatic failover - 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 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 — installing packages, processing data, running Python scripts, and more. - 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 — User sends a message. The AI responds, calling tools (memory, web search, shell, etc.) 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 Anthropic · OpenAI · Gemini · DeepSeek · Mistral · xAI · OpenRouter · Groq · NVIDIA · Cerebras · Ollama Cloud · LongCat · Together AI · Hugging Face · Venice AI · Moonshot AI · Z.AI · MiniMax · AIHubMix · Deep Infra · Fireworks AI · OpenCode · OpenAI-Compatible API · Free tier (no API key needed) 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: Fetch: fetch web content and convert HTML to markdown DeepWiki: AI-powered docs for any GitHub repo Sequential Thinking: structured step-by-step problem-solving Context7: up-to-date library and framework docs Globalping: ping, traceroute, DNS from global probes CoinGecko: real-time crypto prices and market data Manifold Markets: prediction market data and odds Find-A-Domain: domain availability across 1,444+ TLDs All popular servers are free and require no API key. MCP servers auto-reconnect on app startup. Sponsors This project is open-source and maintained by a single developer. If you find this app useful, please consider sponsoring to help take it to the next level with more features and faster updates. Credits - Mistral: https://mistral.ai License Kai is licensed under the Apache License 2.0.