LexiChat runs entirely on your machine. Powered by Ollama — no cloud, no subscriptions, no data leaving your device.
A complete AI workspace that lives on your hardware.
Powered by Ollama. Your conversations, files, and queries never leave your machine. No cloud API keys, no usage logging, no third-party servers involved.
Read, write, search, and summarise files directly. Native support for PDF, Word (.docx), plain text, and code files. Browse your folders interactively in the chat.
Ask about current events, weather, or anything live. LexiChat searches DuckDuckGo and returns real results with clickable links — no browser switching needed.
Create multiple AI personas — a Code Assistant, a Writing Coach, a Research Agent — each with its own model, tools, system prompt, and file sandbox.
Connect any external service by pasting an OpenAPI spec, or attach MCP servers. Turn LexiChat into a powerful automation hub for your workflow.
Progressive chat parameters let you switch between Precise, Balanced, and Creative modes in one click — or dive into advanced controls like temperature, top-p, context window, and more. Set global defaults or change them per-chat.
Define prompts that run automatically — daily, weekly, every N hours, or on demand. Each job is tied to a specific profile and its tools, so it always runs with the right context regardless of which profile you have active.
Use the Step Builder to design multi-step workflows: chain text instructions with specific tool calls (web search, file read, datetime, and more) into a precise, repeatable sequence your agent follows every time.
LexiChat lives in your menu bar / system tray. Closing the window hides it — your scheduled jobs keep running. Click the icon to bring it back any time.
Chat interface with tool results
Settings & profile management
Extensible tools panel
Step Builder — design multi-step workflows with chained tool calls
Three steps. No accounts. No API keys.
Download Ollama for your platform and pull a model. ollama pull gemma3 is a great starting point — it's fast and capable.
Download the installer for your platform from the link above. macOS (Universal), Windows, and Linux (AppImage + .deb) all supported.
Open LexiChat, select your model, and start a conversation. Add folders to the Sandbox to give Lexi access to your files, or connect external APIs via the Tools panel.
LexiChat is free and always will be. If it saves you time or sparks joy, consider supporting continued development.
Send sats directly — no platform fees.
Every bit of support helps keep LexiChat free and actively maintained.
Questions or feedback? Reach us at info@lexi-chat.com