Desktop AI. Seven Providers. Zero Knowledge.
A desktop AI coding assistant with five specialized modes, voice control, browser automation, and a plugin system, with privacy guaranteed by architecture.
Every feature exists because a developer needed it. Five modes, seven providers, and a plugin system. Engineered for how people actually build software.
Your code never leaves your machine. Privacy enforced by architecture.
A specialized mode for every stage of development.
Switch providers per task. Optimize for cost, speed, or capability.
A native desktop app for everyday use, plus a mini mode for terminal-like workflows.
Model Context Protocol with bundled and external tool servers.
Validation feedback loop scores every output 0-100 and iterates.
Plexon is designed so your code never touches a server. Every session is encrypted locally with keys only you control. Seven AI providers, but zero data retention. That is the architecture.
Voice control, autonomous orchestration, and desktop automation. Beyond what a terminal can do
Multi-conversation history, end-to-end encrypted with keys only you control. Sessions stay on your machine, always.
Every AI output is scored 0-100 for correctness, style, and completeness. Below threshold? Plexon iterates automatically.
Built-in voice input with text-to-speech output. Desktop Pilot takes full control of your computer (mouse, keyboard, and screen) for hands-free UI automation.
Decomposes complex projects into parallel subtasks, assigns each to the best provider and mode, and manages execution with spending limits.
Long conversations never hit a wall. Plexon automatically summarizes earlier context when approaching token limits. Configurable thresholds, token buffers, and message preservation controls.
Control Plexon remotely from your phone. Chat with AI, switch modes, manage sessions, trigger desktop and browser automation, all through a Telegram bot linked to your running instance.
Link a Telegram bot to your running Plexon instance and control it from anywhere. Chat with AI, switch modes, manage sessions, run desktop automation, and trigger browser tasks. All from your phone.
Plexon AI Bot
online
/mode architect
Switched to Architect mode. I'll plan before writing any code.
Design an auth microservice with JWT and refresh tokens
Here's the architecture plan:
1. Auth Service - JWT issuing, token validation, refresh rotation
2. User Store - PostgreSQL with bcrypt hashing
3. Gateway - Rate limiting, CORS, token middleware
✅ plan completed (2.1s)
Three steps. You stay in control at every stage.
Pick from five specialized modes (Code, Auto, Architect, Ask, or Orchestrator) depending on what you need.
Plexon generates code, scores it for quality (0-100), and iterates automatically until it passes your threshold.
Every change goes through you. Approval gates, spending limits, and full audit trails keep you in the driver's seat.
Plexon AI powers development workflows for teams and individuals
Build complete applications end-to-end. Choose a mode, let AI write and validate, then review and approve.
Use bundled skills (Website Builder, Figma-to-code, Website Cloner) to go from concept to working prototype in minutes.
Architect mode plans before a single line is written. System design, API schemas, service boundaries. All reviewed before execution.
Proprietary code stays local. Encrypted locally, zero server retention, keys only you control. Built for code you cannot share.
Download the desktop app and start coding with AI assistance in minutes
Download the desktop app from plexon.ai. Available for macOS, Linux, and Windows.
Configure one or more of the 7 supported AI providers. Keys are stored securely on your machine.
Code, Auto, Architect, Ask, or Orchestrator. Pick the right mode for the task and start building.
Experience AI coding assistance with privacy guaranteed by architecture, not terms of service.
Plexon AI is a desktop AI coding assistant for macOS, Windows, and Linux. It connects to seven AI providers, offers five operational modes, and runs entirely on your machine under a zero-knowledge architecture, so your source code never leaves it. Plexon AI includes voice input and output, a Desktop Pilot that can drive your screen, MCP tools with bundled skills, a Telegram bot for remote control, and per-provider spending caps.
Plexon AI supports seven AI providers, and you supply your own API key for each one. The keys are stored on your machine, not on a Plexon server, and requests travel from your machine to the provider you picked. Because you hold the keys, billing and rate limits stay under your control, and a spending cap can be set per provider. You can switch providers between tasks without moving your code anywhere, which also means a provider outage costs you a dropdown selection rather than a working day.
Plexon AI runs on macOS, Windows, and Linux as a native desktop application, and builds for each platform are published at plexon.ai. It is not a browser extension and not a web app. That distinction is what lets the Desktop Pilot drive on-screen applications, lets your source code stay on local disk where the assistant reads it directly, and lets voice input and output run without a browser permission prompt. A project never has to be uploaded anywhere for Plexon AI to work on it.
Pricing for Plexon AI is published at plexon.ai, and it covers the application itself. Model usage is billed separately, by the AI providers, because Plexon AI runs on your own API keys rather than reselling capacity to you at a margin. That arrangement has two consequences worth knowing before you install it. You see the real cost of every request on your provider invoice, and you can set a spending cap per provider inside Plexon AI so a long autonomous run cannot quietly overspend.