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On the recordRead 21 Sep 20269 facts

SigmaOS

SigmaOS · London, United Kingdom · founded 2020

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Plans and prices

Basic

Priced on request

Unlimited workspaces · Fast ad-blocker · Limited Airis Assistant

Read 21 Sep 2026 · sigmaos.com

Personal Pro

$20a month

Unlimited Advanced Airis · Look it up with high usage · Interactive Summaries with high usage

Read 21 Sep 2026 · sigmaos.com

Personal Max

$30a month

Everything in Personal Pro · More LLM models · Unlimited Look it up queries · Unlimited Interactive Summaries

Read 21 Sep 2026 · sigmaos.com

Every plan, in full

On the record

Browser engine
webkitsigmaos.com · read 21 Sep 2026
Built-in ad blocking
Yessigmaos.com · read 21 Sep 2026
Cross-device sync
Yessigmaos.com · read 21 Sep 2026
Extension support
bothsigmaos.com · read 21 Sep 2026
Paid from
20sigmaos.com · read 21 Sep 2026

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