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December 18, 2025

Using Sigma Eclipse: A Step-by-Step Local AI Guide

Andrew Dyuzhov
SigmaGPT - Chrome Extension

Table of Contents

What Is Sigma Local AI

The Sigma Eclipse is an AI model that is integrated into the Sigma Browser. Once installed, the model will work even when the computer is not connected to the internet. There is also no need to create an account or provide credit card information.

User interactions, including prompts, responses, browsing context data and task data, are neither uploaded nor retained in the cloud. Sigma does not collect or use this data for analytics or any other purpose.

Sigma Eclipse is designed to perform the same functions as a browser-based AI agent, such as answering questions, assisting with writing tasks, analysing content and completing tasks on websites. The significant difference here is that this functionality is carried out in a local environment, giving users full control over their data and the environment.

Sigma Eclipse Instead of Cloud AI

Sigma Eclipse is an alternative to cloud-based AI for users who need local execution, predictable usage, and full control over their data. The table below shows the main differences between Sigma Eclipse and traditional cloud AI solutions.

Feature Cloud-Based AI Local AI (Sigma)
Data Storage ❌ Remote servers ✅Stored locally on device
Internet Required ❌ Always ✅No — works fully offline
Risk of Third-Party Access ❌ Moderate to high ✅Essentially zero
Cross-device sync ✅Syncs across devices ❌ Not synced automatically between devices
AI Personalization ❌ Model learns from user cloud logs ✅Local memory only
Resourse Usage ✅Uses remote compute resources ❌ Uses local CPU/GPU and battery
Compliance Risks ❌ Data subject to jurisdiction ✅No external data stored at all

Understanding where AI computations take place helps to clarify what happens to prompts, contextual information and generated outputs. This also helps to explain why some AI systems require constant internet access and ongoing payments, while others, such as Sigma Eclipse, can operate offline without incurring additional costs per request.

How to Install and Enable Sigma Local AI

Getting started with Sigma Eclipse takes only a few minutes and does not require any technical setup. The local model is distributed directly through Sigma Browser and can be enabled from the browser interface.

Step 1: Download Sigma Browser

Visit the official Sigma Browser website and download the desktop version for your operating system. Run the installer and complete the installation process as you would with any standard browser.

Step 2: Sign In

After launching Sigma Browser for the first time, you will be prompted to sign in. You can create an account using your email address or sign in with Apple ID. This step is required to access browser features, but it is not tied to the local AI model usage or request processing.

Step 3: Download Sigma Eclipse

Once inside the browser, open the AI section. Sigma Eclipse is available as a local model that can be downloaded directly to your device. Start the download and wait until the model is fully installed. No additional configuration is needed.

Step 4: Enable Eclipse Mode

After the download is complete, open the AI panel and switch from the cloud-based mode to Eclipse mode. This activates the local LLM. When Eclipse is enabled, all AI requests are processed on your device.

Step 5: Run Your First Agent Task

With Eclipse turned on, describe a simple task in natural language. For example, ask the agent to analyze a webpage, summarize content, or help draft a short message. Sigma will execute the task directly inside the browser using the local model.

Sigma Eclipse is fully active and ready to use for private, offline AI-assisted browsing.

Conclusion

Sigma Eclipse is a convenient alternative to cloud-based AI solutions because it runs solely on the user’s machine. This enables users to access an AI assistant via a browser without uploading data to cloud servers or incurring usage costs. The system is easy to install and can be easily changed to run on a user’s machine.

Through the application of local code execution and browser automation, Sigma Eclipse can perform daily tasks while putting users in full control of their data and environment. To maintain privacy and enable easily predictable offline behaviour, Sigma Eclipse offers a clear and practical approach.