How much does Sigma AI Browser cost?
- Free plan
- Yes
In your favor
- Unlimited usage on Pro. A flat price with no cap on usage.
- Free plan. Free tier at $0 with chat on all platforms, file/image analysis, limited AI Agent, limited image generation, chat with page and limited deep research
How you buy and get started
- Sign up
- Self-serve via app.sigmabrowser.com plans page "Get Plus"
- Setup
- Not stated
- When sales steps in
- Not stated
- Support
- Email support "contact [support@sigmabrowser.com](mailto:support@sigmabrowser.com) for step‑by‑step help"
What Sigma AI Browser does
Sigma is a private AI browser for Mac, Windows and iPhone, with Android in waitlist or APK form. It bundles an agent that acts on web pages, chat with page, deep research and an offline model called Eclipse, sold on Free, Plus and Pro tiers.
- Good for
- Individual users who want an AI-enabled, privacy-focused browser with an agent that automates web tasks.
- Channels
- Mac, Windows, iPhone, Android
- Main product
- Sigma AI Browser
- Also includes
- AI agent, AI chat, Deep Research, Eclipse local LLM, Chat with page, Quick Translate
- Connects to
- Chromium extensions, Web3 wallets and dApps
- Public API
- Not stated
- MCP server
- Not stated
- Autonomous multi-step tasks
Sigma AI agent can take actions on your behalf — navigating pages, filling forms, managing tasks, and getting
- Page and tab summarization
Turn any site into a conversation. Ask questions, get instant summaries, and explore the content without leavi
- SSO / SAML loginNot stated
- Central admin policiesNot stated
- DLP / data controlsNot stated
- Audit logsNot stated
- Choice of AI modelsNot stated
- Windows, Mac, mobile
Also available on Windows, iOS and Android. Linux version coming soon!
The same 8 checks appear on every tool in AI browsers. Each tick quotes the vendor's own site.
Security and your data
| Question | Their answer | Where it says so |
|---|---|---|
| Trains AI on your data? | Not stated | |
| HIPAA (signs a BAA) | Not stated | |
| SOC 2 | Not stated | |
| GDPR | compliant | "Sigma complies with GDPR and CCPA, so your data is always handled according to the strictest privacy laws"home |
| CCPA | compliant | "Sigma complies with GDPR and CCPA, so your data is always handled according to the strictest privacy laws"home |
| PCI | Not stated | |
| ISO 27001 | Not stated | |
| Single sign-on | Not stated | |
| Trust center | Not stated |
Security answers are the vendor's own claims, quoted. We don't audit them.
Every plan
| Plan | Monthly | Billed yearly | Included | Over the allowance | Where it says so |
|---|---|---|---|---|---|
| Free/ mo | $0 | – | – | – | "Limited access to AI Agent" |
| Plus/ mo | $10 | $8per month | – | – | "writer chat with page limited deep research animate images plus recommended $10 $8 / mo -2" "writer chat with page limited deep research animate images plus recommended $10 $8 / mo -2" |
| Pro/ mo | $75 | $60per month | Unlimited | – | "get plus https://app.sigmabrowser.com/chat plans unlimited prompts unlimited text writer 5" "ages plus recommended $10 $8 / mo -20% $10 / mo extend your productivity get plus https://" |
Free plan: Free tier at $0 with chat on all platforms, file/image analysis, limited AI Agent, limited image generation, chat with page and limited deep research
Fine print
- Billing increment
- Not stated
- Billed beyond usage
- Not stated
- Contract
- Not stated
- Refunds
- Not stated
- Auto renew
- Not stated
- Price change notice
- Not stated
"Not stated" means we read their pricing page and terms and they don't say.
About the company
- Legal name
- SigmaBrowser OÜ
- Address
- Harju tn 3//Vana-Posti tn 2, Tallinn 10146, Estonia
- Online since
- May 27, 2024 Domain registration date
- Ships updates
- 2 in the last 12 months Last on Feb 3, 2026, from their changelog
Sigma AI Browser alternatives
Dia (The Browser Company)$10 /moFree plan · checked Oct 29, 2026
Opera Neon$19.90 /mochecked Oct 29, 2026
Claude in Chrome$17 /moFree plan · checked Oct 29, 2026
Tabbit$30 /moFree plan · checked Oct 29, 2026
Fellou$16 /moFree plan · checked Oct 29, 2026
Browserbase$20 /moFree plan · checked Oct 29, 2026
Strawberry Browser$20 /moFree plan · checked Oct 29, 2026
Skyvern$29 /mochecked Oct 29, 2026Reviews elsewhere
We link to reviews instead of copying ratings: those sites don't allow reuse, and we don't test products ourselves.
Questions
Is Sigma AI Browser free?
Yes. Free tier at $0 with chat on all platforms, file/image analysis, limited AI Agent, limited image generation, chat with page and limited deep research Paid plans start at $10/month.
How much does Sigma AI Browser cost?
Paid plans start at $8 per month billed yearly, or $10 billed monthly.