Sigma AI Browser
A Chromium-based browser with a built-in AI agent, AI chat, and an offline local model called Eclipse.
- An AI agent that clicks, fills forms, navigates pages, and completes multi-step tasks you describe.
- AI chat for questions, deep research, text writing, and image generation in one panel.
- Eclipse, a local model built into the browser that handles questions and page summaries on your device.
- Chat with page and quick translate, so you can question or translate content without leaving the tab.
Best for: Privacy-focused users who want AI help without sending every prompt to a cloud service. · Researchers and students who run repeated deep research sessions in the browser. · People who want to automate routine web tasks such as forms, bookings, and data collection.
Introduction
Sigma AI Browser is a Chromium-based browser that puts an AI agent, an AI chat assistant, and a local language model inside the browser window. You can ask the agent to navigate pages, fill forms, and finish multi-step web tasks, use chat for research and image generation, or switch to Eclipse for summaries and questions that stay on your device. The browser also ships with an ad blocker, private profiles, extension support, and translation tools. It is free to download for macOS and Windows, with iOS and Android versions listed as well.
Key Features
- An AI agent that clicks, fills forms, navigates pages, and completes multi-step tasks you describe.
- AI chat for questions, deep research, text writing, and image generation in one panel.
- Eclipse, a local model built into the browser that handles questions and page summaries on your device.
- Chat with page and quick translate, so you can question or translate content without leaving the tab.
- A built-in ad blocker, private profiles, and encrypted profile data protected by a 12-word recovery phrase.
- Support for Chrome-style extensions, bookmarks, password managers, and history.
- Web3 features that let you connect to decentralized apps and manage wallets in the browser.
Who is it for
- Privacy-focused users who want AI help without sending every prompt to a cloud service.
- Researchers and students who run repeated deep research sessions in the browser.
- People who want to automate routine web tasks such as forms, bookings, and data collection.
- Web3 users who want wallet and decentralized app access in the same browser.
- Chrome users who want AI features built in rather than added through extensions.
What can you do with Sigma AI Browser
- Describe a goal and let the agent work through a website, including clicking and filling fields.
- Run deep research that queues sources, clusters the findings, and returns a structured summary.
- Ask questions about the page you are reading and get an answer without copying text elsewhere.
- Highlight a sentence and translate it in place while you browse.
- Keep work, personal, and other accounts in separate encrypted profiles.
- Keep using the extensions and bookmarks you already rely on.
How does Sigma AI Browser work
- Download the browser for macOS or Windows, or install the mobile app, and complete the first-run setup.
- Import bookmarks, passwords, and extensions, then create a private profile protected by your recovery phrase.
- Open AI chat for a question or start the agent with a goal written in plain language.
- Review the agent's actions as it navigates the site, or switch to Eclipse when you want a local answer.
- Use page chat, translation, and the ad blocker as you browse; paid plans raise limits on prompts, research, uploads, and agent runs.
Pricing
- Free: $0 a month, with chat on all platforms, text and file analysis, limited AI agent access, limited image generation, and limited deep research.
- Plus: $10 a month, or $8 a month with annual billing, with unlimited prompts, 50 times more file uploads, 10 times more web searches, and 5 more agent uses.
- Pro: $60 a month, with unlimited file uploads, web search, image generation, deep research, AI agent use, and animated images.
FAQ
Is Sigma AI Browser free?
Yes. The Free plan costs $0 and includes chat on every platform, text and file analysis, limited agent access, limited image generation, and limited deep research. Paid plans raise the limits.
Which operating systems are supported?
Sigma lists downloads for macOS and Windows, and says it is also available on iOS and Android. A Linux version is described as coming soon on the download page.
What is Eclipse?
Eclipse is a local language model built into the browser. It answers questions, summarizes pages, and helps with writing without sending those prompts to a server, according to the company.
Can I use my Chrome extensions?
Yes. Sigma is built on Chromium and lets you add and manage browser extensions like a standard Chromium browser, alongside bookmarks, passwords, and history.
Does the browser block ads and trackers?
The browser includes a built-in ad blocker and private profiles, and the company says connections use TLS 1.3, HTTPS, and DNS over HTTPS. You can read the privacy details on the official site.
