Sigma AI Browser : AI Power, Privacy, Speed, Pricing, Reviews
Sigma AI Browser: Blends AI power, ironclad privacy & blazing speed—plus pricing, reviews, use cases & alternatives. All-in-one intelligent browsing.


What Is Sigma AI Browser?
Sigma AI Browser is a next-generation web browser engineered for the AI era — combining intelligent assistance, uncompromising privacy, blistering speed, and transparent pricing. At its core lies SigmaGPT, a purpose-built, on-device AI engine that powers real-time chat, content creation, webpage summarization, and contextual research — all without sending your data to remote servers.
Why Choose Sigma AI Browser?
Unlike traditional browsers with add-on AI extensions, Sigma integrates intelligence natively — delivering seamless performance, end-to-end encryption, and zero-tracking browsing. Its lightweight architecture ensures faster page loads, lower memory usage, and extended battery life — making it ideal for professionals, students, and privacy-conscious users alike.
Sigma AI Browser: Key Features at a Glance
- AI Power: SigmaGPT responds instantly in-chat, drafts emails, explains complex topics, and transforms ideas into structured content — all within the browser window.
- Privacy First: No telemetry, no ad profiling, no cloud-based AI inference by default. Optional cloud features (e.g., cross-device sync) are opt-in and fully encrypted.
- Blazing Speed: Built on a modern Chromium fork with AI-optimized rendering — pages load up to 40% faster than standard browsers, especially on low-bandwidth or older hardware.
- Transparent Pricing: Free tier includes full SigmaGPT access and core privacy tools. Pro plan ($4.99/month or $49/year) unlocks advanced AI workflows, priority support, and offline model caching.
How to Get Started in 3 Simple Steps
1. Download the latest version from sigmabrowser.com/download
2. Launch the browser and click the glowing Sigma icon in the top-right toolbar to launch SigmaGPT
3. Ask anything — summarize an article, compare products, translate text, or brainstorm ideas — instantly and securely
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Support & Contact Information
For technical help, billing inquiries, or refund requests, visit our Contact Us page or email [email protected]. Our team typically responds within 12 business hours.
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About Sigma AI Browser
Sigma AI Browser is developed by Sigma Labs Inc., an independent software company headquartered in Berlin, Germany.
Company address: Kaiserstraße 32, 10777 Berlin, Germany.
Learn more about our mission, values, and open-source contributions on the About Us page. -
Sigma AI Browser Login
Access your synced settings and AI history: Login Portal
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Sigma AI Browser Sign Up
Create your free account in seconds: Sign Up Now
Real User Reviews & Ratings
“Finally, an AI browser that doesn’t trade my privacy for convenience. SigmaGPT feels like having a research assistant built into every tab.”
— Maya T., Product Designer ★★★★★ (Trustpilot)
“Faster than Chrome, smarter than Edge, and infinitely more respectful of my data. Worth every penny of the Pro subscription.”
— David L., Academic Researcher ★★★★★ (Product Hunt)
FAQs
What makes Sigma AI Browser different from other AI browsers?
It’s the only mainstream browser that runs SigmaGPT locally by default — meaning your prompts, browsing context, and generated content never leave your device unless you explicitly choose otherwise. Combined with a lean, privacy-hardened codebase, it delivers true AI empowerment *without* surveillance.
Is Sigma AI Browser really free to use?
Yes — the core browser and full SigmaGPT functionality are completely free forever. The optional Pro tier enhances productivity with features like multi-step AI agents, custom prompt libraries, and encrypted cloud sync — but none are required to experience AI-powered browsing at its best.
Does Sigma AI Browser work offline?
The lightweight SigmaGPT Lite model runs entirely offline for basic tasks (chat, summarization, translation). For advanced reasoning or large-context generation, an internet connection enables optional cloud acceleration — always with clear user consent and encryption.