Sigma
A privacy-focused AI browser, its official website states that it has built-in offline models running locally, keeping sensitive data on the device, and also offers capabilities such as web chat, in-depth research, image generation, and built-in ad blocking.
Updated: 2026-10-30
What is Sigma?
Sigma is an AI browser focused on privacy. As described on its official website, it is lightweight, feature-packed, and designed for speed. It packs local large models, AI chat, in-depth research, and ad blocking directly into the browser itself. The company emphasizes that sensitive parts of interactions remain on the device, and it offers versions for Mac, Windows, and iPhone. The platform also features a range of privacy-focused products from the same series, such as email, chat, and wallet apps. Its overall approach is to bring common online activities into a locally controlled environment.
Who is it for?
- Professional users who do not want to send work prompts to the cloud and are concerned about data leaving their devices
- Researchers who need to look up information back and forth between pages and want the browser to run workflows on their behalf directly
- Professionals who often read foreign language materials and need instant translation and summarization
- Regular users who are fed up with browser ads and tracking and want a one-stop solution
- Professionals engaged in competitor research or public opinion browsing who do not want to leave a centralized browsing history
Key features
7Eclipse local LLM
Described on the official website as a built-in local model for the browser, with data remaining on the device and no prompts sent to the server.
AI agent
Officially described as being able to act on behalf of users, performing end-to-end actions such as browsing web pages, filling out forms, and managing tasks.
Sigma AI Chat
According to the official website, it can answer questions, conduct in-depth research, generate images and write texts.
Chat with Page and Quick Translate
Ask questions about the content of the current page and perform quick translations.
Built-in ad blocker
The built-in ad-blocking capability listed on the official website.
Mnemonic profile
Officially described as being based on blockchain cryptography, it uses recovery mnemonic phrases to provide a backupable security foundation for the browser's identity.
Local AI Image Generator & Private Profiles
The built-in local image generation and privacy configuration features listed on the official website.
How to use Sigma
- 1The experience of the local model depends on the hardware of your device. First, run a summary of a long document to check if the speed is acceptable.
- 2When letting the AI agent perform operations on your behalf, manually review and approve websites involving login status and payment before allowing access.
- 3Once the mnemonic phrase is lost, it cannot be recovered; back it up offline with the same level of importance as a wallet.
- 4The ad blocker may affect the normal display of some websites. If any abnormalities occur, temporarily disable it for troubleshooting first.
- 5The privacy statement is subject to the current version on the official website. It is recommended to read it again before processing sensitive business data.
Traffic & popularity
Data month Sep 2026
Sigma receives about 1.6M visits per month and ranks #28,810 worldwide.
Monthly visits
12 monthsTraffic sources
- Search68.7%
- Direct22.6%
- Referrals5.4%
- Social2.1%
- AI assistants1.2%
Top countries
- United States21.9%
- India5.2%
- Vietnam3.8%
- Uzbekistan3.4%
- United Kingdom3.3%
Estimated from third-party traffic data.
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