Large Language Language

Download LLL for VS Code

LLLTS is available as a free VS Code Marketplace extension. If you are new to coding tools, follow the steps below in order.

Download Extension

How to install it

Step 1

Download VS Code

If you do not already have Visual Studio Code, install it first. LLL works as a extension inside VS Code.

Get VS Code
Step 2

Open VS Code and click Extensions

Start VS Code and click the Extensions icon in the left sidebar. This opens the place where you install extensions.

Step 3

Search for “LLLTS”

Use the search box in Extensions and type LLLTS. Look for the extension named LLLTS.

Step 4

Install the extension

Click Install in VS Code, or open the official extension page directly from this button.

Open Extension Page
Step 5

Select a model or model provider

After installation, open the LLL panel and choose the AI model or provider you want to use.

Step 6

Describe your project

Tell LLL what you want to build in normal language. Once you describe the project, it can start helping right away.

Data and security basics

AI coding tools deserve a direct data story. LLL keeps API keys locally in VS Code secret storage. LLL does not log your prompts or code on LLL servers, because provider requests do not touch LLL servers unless you explicitly configure a server-mediated feature.

  • OpenRouter API keys are stored locally by the extension, not on LLL servers.
  • OpenAI sign-in credentials are stored locally by the extension through VS Code secret storage.
  • When you ask the extension to use OpenAI or OpenRouter, the relevant prompt, selected context, and generated code are sent to that provider so the model can answer.
  • The extension does not send prompts, source code, or API keys to LLL servers by default, and does not use LLL-hosted prompt/code telemetry by default.
  • It does not phone home to LLL servers by default; it contacts configured model providers and normal VS Code or Marketplace services unless you explicitly configure a server-mediated feature.

What this page is for

This page is the simple installation guide. The technical explanation of core rules stays in the documentation.

Ready to start?

Download the extension, install it in VS Code, and then describe your project.

Download Extension

View the language source

The extension is free to install, but its source code is closed, as opposed to the language itself. Follow the public lllts programming language repository, or open an issue on GitHub. This is not the closed-source VS Code extension repository.

Open GitHub