How much does Sigma Browser cost?

Freemium: core browser, privacy features, and basic AI free; paid plans unlock higher limits and advanced features (rates not published in retrieved materials).

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Sigma Browser

Q: Who is Sigma Browser for?

privacy conscious professionals, researchers, marketers, consumers

Also known as: Sigma AI Browser, Eclipse, sigmabrowser.com

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Browser / computer-use agentindependentVerified 2026-07-22

Privacy first agentic browser: an in-site agent that logs in, clicks, and completes multi step tasks with approve-before-submit control, plus Eclipse, a local on-device LLM with no cloud processing. Freemium, cross platform.

Sigma is a privacy first agentic browser combining three layers: an AI agent that executes multi step tasks inside live websites (logging in, clicking buttons, filling forms, submitting data, and returning results from a single goal description) with stated prompt injection defenses and a review and approve workflow before submission; Eclipse, a local LLM built into the browser that processes prompts on device with no cloud processing; and privacy infrastructure including end to end encrypted AI chats, encrypted DNS, phishing detection, tracker blocking, and stated GDPR and CCPA compliance, with no credentials or sensitive data retained after tasks complete. Use cases span booking, form filling, bulk email cleanup, calendar management, CRM lead logging, and Deep Research. Freemium across Windows, macOS, iOS, and Android. Evidence is vendor published and directory sourced; no funding or independent press coverage retrieved.

Vendor details

Canonical URL

https://www.sigmabrowser.com

Funding status

Funding not disclosed in retrieved materials; agent feature entered early access August 2025

Company status

independent

Use cases & customers

Primary use cases

in-site task automation (booking, forms, submissions)private on-device AI via local LLMdeep researchdata extraction to spreadsheetsworkflow automation (email cleanup, calendar, social posting)

Target customers

privacy conscious professionalsresearchersmarketersconsumers

Deployment options

desktop (Windows/macOS)mobile (iOS/Android)local LLM on device

Integrations

Operates inside live websites through the Chromium based browser (login, click, type, fill, submit); pulls tables, receipts, and reports into spreadsheets; cross device syncing.

Sources & related URLs

Research sources

https://www.sigmabrowser.com/ https://navtools.ai/tool/sigma-browser https://aitoolsexplorer.com/ai-tools/sigma-browser-ai-browser/

Capability coverage

4.5 / 14 capabilities · 32%

Integrations & Tool CallingOperates on any site through the browser UI with data extraction into spreadsheets; no connector catalog or tool calling, Sigma materials 2026-07-22	Partial
Workflow OrchestrationThe agent completes multi step tasks from a single goal description (booking, forms, email cleanup, CRM logging), though scope is consumer task automation in gradual rollout, Sigma materials 2026-07-22	Partial
Knowledge Grounding & RAGDeep Research synthesis across sources and page aware chat provide grounding, without a documented retrieval architecture, Sigma materials 2026-07-22	Partial
Human Oversight & GuardrailsThe documented flow has users review the agent's proposed actions and approve the workflow before submission, with stated prompt injection defenses, Sigma materials and listings 2026-07-22	Partial
Security, Identity & GovernanceEnd to end encrypted AI chats, encrypted DNS, phishing detection, stated prompt injection defenses, GDPR and CCPA compliance assertions, and zero credential retention, all self asserted without third party attestations, Sigma materials 2026-07-22	Partial
Observability & AuditabilityNo run visibility, action logs, or audit tooling documented, Sigma materials 2026-07-22	Unable to verify
Memory & State PersistenceNo credentials or sensitive data are retained after tasks complete by design; no persistent memory documented, Sigma materials 2026-07-22	Unable to verify
Deployment & Data ResidencyCross platform client with Eclipse, a local LLM built into the browser processing data on device with no cloud processing, Sigma materials 2026-07-22	Partial
Prebuilt Agents, Templates & PacksNo prebuilt agent or template library documented, Sigma materials 2026-07-22	Unable to verify
Triggers & Channel CoverageAll agent activity is user initiated from goal descriptions; no proactive or scheduled trigger machinery documented, Sigma materials 2026-07-22	Unable to verify
Model Flexibility & RoutingEclipse ships as a built in local LLM alongside cloud AI features, a documented local model layer though without customer model choice or routing, Sigma materials 2026-07-22	Partial
APIs, SDKs & MCP ExtensibilityNo developer API, SDK, or MCP surface documented, Sigma materials 2026-07-22	Unable to verify
Testing, Debugging & OptimizationNo customer facing testing or evaluation tooling documented, Sigma materials 2026-07-22	Unable to verify
Browser & Computer UseThe agent acts inside live websites, logging in, clicking, typing, filling fields, and submitting, as the core product capability, Sigma materials 2026-07-22	Full

Pricing

Free tier + paid plans

freemium subscription

Public — partialLow variable costFree tierTrial available

What is public

The freemium structure is public (free core browser and AI, paid plans for higher limits); specific plan rates were not published in retrieved materials.

Variable cost rationale

Freemium subscription with a local LLM handling much processing on device; no usage metering documented.

Sales call required

No — self-serve available

Free / trial

Free tier (core browser + basic AI)

Verified 2026-07-22

Data confidence: medium