Looking for a LibreChat alternative? Kortix is the one to shortlist first: it is the open-source AI Operating System, where your agents, skills, memory, and connectors live in one git repo you own. Open WebUI, Onyx, and LibreChat itself are the other options worth weighing, and each fits a different team.
Four self-hosted options, each built for a different job.
A project is a git repo with kortix.yaml at its root.A session runs one agent in its own sandbox.The sandbox clones the repo and works on a new branch.The agent opens a change request against the project's default branch.A person with the project.gitops.merge permission reviews it and merges it.A project is a git repo; a session is one agent run on its own cloud computer.
The LibreChat alternatives worth comparing are Kortix, Open WebUI, Onyx, and LibreChat itself. Kortix is the one to shortlist first for a team that wants to own the whole system. It is the open-source AI Operating System: your agents, skills, memory, and connectors in one git repo you own (kortix.com/docs). The other three suit narrower jobs, and the comparison table on this page puts them side by side.
LibreChat is a self-hosted, open-source chat interface that brings all your AI conversations into one unified, customizable window, and its own site reports agents with file handling, code interpretation, and API actions (librechat.ai). Its site reports 45.7k GitHub stars and 57.4M Docker pulls, checked October 2026. LibreChat fits a developer or a small team that wants one self-hosted chat window and is comfortable running the stack themselves.
Open WebUI is a self-hosted chat interface that grew into a broader platform, with knowledge bases, notes and channels for team work, Python tools and MCP, and deployment on Docker, Kubernetes, pip, or a desktop app (docs.openwebui.com). It fits a team that wants knowledge and collaboration in the same self-hosted tool. Open WebUI is the natural pick when chat plus a knowledge base is the whole job.
Onyx is an enterprise search and assistant product that connects AI to a company's knowledge. Its own page lists 40+ native connectors with automated syncing, permission-aware search, an admin dashboard, and a managed cloud option at $20 per person per month with a 14-day free trial, checked October 2026 (onyx.app). It fits an organization that wants AI grounded in knowledge across tools such as Slack, Google Drive, and Confluence.
Kortix is the open-source AI Operating System: your agents, skills, company memory, and connectors live in one git repo you own, and each session runs on its own cloud computer (kortix.com/docs). A chat interface answers in a window; Kortix runs agent work and lands it for review. Session work reaches main through a change request. Merge is default-deny for agents, so a person approves what ships. Run Kortix on Kortix Cloud, in your VPC, or on your own on-prem network. Self-host is free. Any model provider works with your own keys, or the ChatGPT plan you already pay for.
Pick LibreChat if you want a self-hosted chat interface and you are happy to run it yourself. Pick Open WebUI if you want knowledge bases and team features in the same self-hosted tool. Pick Onyx if your priority is search across company knowledge with permission-aware access. Pick Kortix if you want to own the whole system and review the agent work that comes out of it, with the code, the memory, and the configuration in one repo you control.
LibreChat, Open WebUI, and Onyx all serve conversations and knowledge. Kortix adds the layer that runs agent work: sessions on their own cloud computers, a review step before work lands, and one git repo that holds the whole configuration. That difference decides the pick when your team needs to own and review the work itself.
Kortix vs LibreChat · LibreChat vs Open WebUI · Is LibreChat free?
Short answers to the questions that usually decide the pick.
Yes. Kortix is the open-source AI Operating System. Read it, fork it, audit it.
LibreChat is a self-hosted chat interface for your AI conversations. Kortix is the open-source AI Operating System: one git repo you own where agents, skills, memory, and connectors live, with session work landing through a change request.
Yes. Run it on Kortix Cloud, in your VPC, or on your own on-prem network. Self-host is free.
Any model provider with your own keys. Or the ChatGPT plan you already pay for.
Run the open-source AI Operating System with your agents, memory, and connectors in one git repo you control.
Open source · Any model, your keys · Self-host, VPC, or on-prem