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).

What are the best alternatives to Sigma Browser?

Based on documented capability coverage across the Agentic Index 14 point taxonomy, the closest alternatives to Sigma Browser among browser and computer-use agents are Astral, Brave Leo AI Browsing, Induced AI, Autotab. Each is graded on the same public evidence, and no vendor pays for placement.

Does Sigma Browser have SOC 2, SSO and role based access control?

Partial under the Agentic Index verification standard. Sigma Browser publishes some public evidence of security and identity controls, but narrower than the full set of SOC 2, single sign on (SSO) and role based access control (RBAC). Evidence basis: End 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. Graded from public evidence only against the Agentic Index 14 point capability taxonomy. No vendor pays for placement.

Can Sigma Browser be self hosted or run in a private VPC?

Partial under the Agentic Index verification standard. Sigma Browser publishes some public evidence on deployment and data residency, but narrower than a documented self hosted or private VPC option. Evidence basis: Cross platform client with Eclipse, a local LLM built into the browser processing data on device with no cloud processing, Sigma materials 2026-07-22. Graded from public evidence only against the Agentic Index 14 point capability taxonomy. No vendor pays for placement.

Does Sigma Browser require human approval before an agent acts?

Partial under the Agentic Index verification standard. Sigma Browser publishes some public evidence of guardrails or oversight, but narrower than a documented human approval step before an agent acts. Evidence basis: The 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. Graded from public evidence only against the Agentic Index 14 point capability taxonomy. No vendor pays for placement.

Back to vendors

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

Entry priceFree tier + paid plansFull pricing detail

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/

Agentic Index coverage score

4.5 / 14 capabilities · 32%

Integrations & Tool Calling	Partial
Operates on any site through the browser UI with data extraction into spreadsheets; no connector catalog or tool calling, Sigma materials 2026-07-22
Workflow Orchestration	Partial
The 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
Knowledge Grounding & RAG	Partial
Deep Research synthesis across sources and page aware chat provide grounding, without a documented retrieval architecture, Sigma materials 2026-07-22
Human Oversight & Guardrails	Partial
The 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
Security, Identity & Governance	Partial
End 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
Observability & Auditability	Unable to verify
No run visibility, action logs, or audit tooling documented, Sigma materials 2026-07-22
Memory & State Persistence	Unable to verify
No credentials or sensitive data are retained after tasks complete by design; no persistent memory documented, Sigma materials 2026-07-22
Deployment & Data Residency	Partial
Cross platform client with Eclipse, a local LLM built into the browser processing data on device with no cloud processing, Sigma materials 2026-07-22
Prebuilt Agents, Templates & Packs	Unable to verify
No prebuilt agent or template library documented, Sigma materials 2026-07-22
Triggers & Channel Coverage	Unable to verify
All agent activity is user initiated from goal descriptions; no proactive or scheduled trigger machinery documented, Sigma materials 2026-07-22
Model Flexibility & Routing	Partial
Eclipse 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
APIs, SDKs & MCP Extensibility	Unable to verify
No developer API, SDK, or MCP surface documented, Sigma materials 2026-07-22
Testing, Debugging & Optimization	Unable to verify
No customer facing testing or evaluation tooling documented, Sigma materials 2026-07-22
Browser & Computer Use	Full
The agent acts inside live websites, logging in, clicking, typing, filling fields, and submitting, as the core product capability, Sigma materials 2026-07-22

The Agentic Index coverage score grades every vendor Full, Partial or Unable to verify against the same 14 buyer facing capabilities, from public evidence only. Each capability links to how all vendors in the index score on it. How this evidence is graded

Pricing

Free tier + paid plans

freemium subscription

Free 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)

Agentic Index verified 2026-07-22

Related vendors

Alternatives to Sigma Browser

The closest documented capability profiles to Sigma Browser among browser and computer-use agents tracked by Agentic Index, ordered by similarity on the same 14 point evidence the rankings use. No vendor pays for placement.

Astral4.5 / 14Adds documented Prebuilt Agents, Templates & Packs and Triggers & Channel Coverage
Brave Leo AI Browsing6.5 / 14Adds documented Prebuilt Agents, Templates & Packs
Induced AI4.0 / 14Adds documented Triggers & Channel Coverage and APIs, SDKs & MCP Extensibility
Autotab7.0 / 14Adds documented Observability & Auditability and Memory & State Persistence, among others
Lightpanda3.0 / 14Adds documented APIs, SDKs & MCP Extensibility
MultiOn7.0 / 14Adds documented Observability & Auditability and Memory & State Persistence, among others

Similarity is computed from each vendor's Agentic Index coverage score evidence, axis by axis, not from the totals. How this evidence is graded

Compare Sigma Browser with other vendors →Compare all browser and computer-use agents →See where Sigma Browser ranks →

Data confidence: medium

Head to head

Sigma Browser vs Visualping