Invariant LLM Connect · Public Testing
Give the resources to the model, not the browser.
Invariant LLM Connect is a dedicated lightweight browser for web-based LLM platforms. It runs beside your normal browser rather than trying to replace it.
Purpose-built
A narrow browser on purpose.
Connect loads configured local, LAN, VPN, or remote LLM interfaces while the hosted platform remains responsible for chat, models, files, tools, agents, RAG, authentication, and application behavior.
Connect uses a dedicated Gecko-based runtime with the browser shell narrowed around LLM-platform use rather than general web browsing.
Configured LLM endpoints can be opened side by side without exposing a normal unrestricted address bar.
Configured platform origins stay inside Connect; ordinary external pages can use External Preview while sensitive destinations hand off to the system browser.
Focused by design
The platform stays in charge of the AI experience.
Connect provides the browser environment around a configured LLM platform. Chat, model controls, files, tools, agents, retrieval, authentication, and other application behavior remain the responsibility of the platform itself.
No normal address bar
The + Platform control opens configured LLM destinations instead of arbitrary blank web tabs.
Windows and Linux
Current public test builds are available for Windows and x86_64 glibc Linux, with both platforms released on the same Connect version.
Pre-release
Current builds are development software; signing, final release infrastructure, and some interaction workflows remain pending.
Open-source foundation
Firefox/Gecko provides the web-engine foundation.
Invariant LLM Connect uses Mozilla's Firefox/Gecko technology for the modern web-engine layer needed by LLM applications: page rendering, networking, security, storage, uploads and downloads, streaming, sandboxing, and site-isolation behavior.
Cat vs Dot narrows that foundation into a single-purpose LLM shell rather than a general web browser, adding configured platform selection, controlled tabs and windows, suspension behavior, external-link handling, and privacy-focused removal or disabling of browser services that are not required for the product's role.