What is Sigma AI Browser?
Sigma AI Browser is an AI-first agentic browser that combines an AI agent, deep research, and AI tools to help users navigate, create, and automate on the web faster than any traditional browser.
Web browsers · Estonia
Sigma Private AI Browser
Private AI browser with built-in AI agent, local AI, and ad blocker
- Community votes0
- DR by Ahrefs51 no change since last check
Ahrefs Domain Rating set in type 16 Oct 2026, reset 4 Oct 2026.
Sigma Private AI Browser metrics
| Metric | Value |
|---|---|
| Domain Rating | 51 no change since last check |
| Trust Flow | 25 no change since last check |
| Citation Flow | 46 no change since last check |
| Referring domains | 882 no change since last check |
| External backlinks | 15,307 no change since last check |
Ahrefs Domain Rating set in type 16 Oct 2026, reset 4 Oct 2026. Lead topic: Science/Social Sciences (25). Majestic set 4 Oct 2026, reset 4 Oct 2026. Link data typeset by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Sigma Private AI Browser domain colophon
| Domain age | 2 years |
|---|---|
| Registered | |
| Expires | |
| Registrar | NameCheap, Inc. |
| DNSSEC | Not signed |
A free private AI browser combining an AI agent, deep research, and AI tools for faster web navigation, creation, and automation with full privacy protection.
The story so far
Sigma is a free, privacy-focused AI browser built on Chromium and enhanced with AI capabilities. It features a built-in AI agent that can automate tasks like navigating pages, filling forms, and managing workflows without requiring setup or coding. The browser includes Eclipse, a local language model that runs offline on your device for faster responses and full data privacy. Sigma provides deep research mode for structured insights, AI chat for questions and content generation, image generation, and site summarization through chat with page functionality.
The browser prioritizes security and privacy through end-to-end encryption for all user data and AI conversations, a built-in ad blocker, and blockchain-based mnemonic profiles for secure identity management. Critical data stays local on your device rather than being sent to servers. Sigma is available on Windows, macOS, iOS, and Android, supports browser extensions, and includes Web3 integration for decentralized apps and blockchain interactions. Performance benchmarks show it uses less RAM and is faster than competing browsers.
Typeset features
- AI agent for automated task automation
- Local AI (Eclipse) running offline on device
- Deep Research mode for structured insights
- AI Chat for questions, research, and content creation
- Built-in ad blocker
- End-to-end encryption for data and conversations
- Mnemonic profiles with blockchain-based identity
Pricing
Pricing model: Freemium
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Questions and answers
What's a browser-based AI agent?
A browser-based AI agent works inside the browser with no setup or coding required. It interacts with websites like a real user by clicking buttons, filling fields, submitting forms, and gathering data on the user's behalf.
How is this different from a chatbot or AI assistant?
A chatbot talks while an AI agent acts. The AI agent does not just answer questions but logs in, performs tasks, and brings back results.
Is it safe? Will you store my data?
All tasks are processed securely with end-to-end encryption. Sigma never stores credentials or task data after execution. Everything runs locally or encrypted in-transit.
What is Deep Research mode?
Deep Research is a special mode inside the AI browser that lets users queue sources, cluster information, and generate structured insights. It is perfect for market analysis, academic review, or a deep dive in any topic.
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