Sigma
Sigma is a Chromium-based browser with an AI agent for web actions, AI research and chat tools, and a built-in local LLM. It is for people who want to browse, research, and automate online tasks in one browser.
One of 651 tools in AI Agents
Who it's for
- Researchers doing market analysis or academic review who want to organize sources and produce structured insights with Deep Research.
- People handling repeatable online work who want an agent to interact with websites, fill forms, gather data, or update spreadsheets.
- Privacy-conscious browser users who want local AI assistance and browser features such as profiles, extensions, and ad blocking.
Not the right fit if…
- Teams that require a Linux browser today: the page says the Linux version is coming soon.
How it fits your workflow
Download Sigma for a supported platform and use it as a Chromium-based browser, with extensions, profiles, translation, and ad blocking available alongside browsing.
For web tasks, describe a goal to the AI agent. It interacts with sites by clicking, filling fields, submitting forms, or gathering data, then brings back results.
For research or page-level help, use Deep Research to queue and organize sources, or chat with a page for summaries and questions. Eclipse provides local AI functions such as page summaries and writing.
Pricing
Premium
The page advertises 50% off the first subscription purchase with promo code SIGMA50; the standard price is not stated.
Prices checked on Oct 6, 2026 from the vendor's site. They can change; confirm before you buy.
Key features
- Browser-based AI agent
- Describe a goal and the agent can interact with websites, including clicking buttons, filling fields, submitting forms, and gathering data.
- AI Chat and Deep Research
- Ask questions, run deep research, generate images, and create text. Deep Research can queue sources, cluster information, and generate structured insights.
- Eclipse local AI
- A local LLM built into the browser for asking questions, summarizing pages, writing, and exploring. The page says prompts are processed on the device rather than sent to servers.
- Chat with page
- Ask questions about a website and get summaries or explore its content without leaving the page.
- Quick Translate
- Highlight text on a page to translate it into another language.
- Browser extensions
- Add and manage browser extensions.
Limitations to know
- A Linux version is not yet presented as available; the page says it is coming soon.
Alternatives to consider
-
SigmaOS
Choose it if you want a macOS browser organized around workspaces and vertical tabs, with an AI assistant for webpage questions and interactive summaries.
-
MaxAI
Choose it if you want a browser extension and web app focused on chatting with webpages and working with PDFs and videos rather than switching to a separate AI-first browser.
Getting started
- Download Sigma for macOS or Windows, or use the App Store option for iPhone.
- Open the browser and describe a task to the AI agent; the page says it requires no setup or coding.
- Choose AI Chat, Deep Research, Eclipse, or chat with page for other AI tasks.
Frequently asked questions
What is Sigma AI Browser?
It is an AI-first browser combining an AI agent, deep research, and AI tools to help users navigate, create, and automate tasks on the web.
What can the browser-based AI agent do?
It can interact with websites by clicking buttons, filling fields, submitting forms, and gathering data. The page gives examples such as booking tickets, managing an inbox, paying bills, posting on social media, and updating spreadsheets.
What is Deep Research mode?
It lets users queue sources, cluster information, and generate structured insights, including for market analysis or academic review.
Does Sigma store credentials or task data?
The page says tasks are processed with end-to-end encryption and that credentials and task data are not stored after execution. It says processing happens locally or encrypted in transit.
What should I do if the browser or AI agent is not responding?
The page recommends updating to the latest version, disabling third-party extensions, clearing the workspace cache, and relaunching. If the problem continues, it directs users to [email protected].
Which platforms are available?
The page provides downloads for macOS and Windows and an App Store option for iPhone. It says Linux is coming soon and also mentions an Android waitlist and an APK download.