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Head to head · 2026

Helper vs Sigma AI Browser

Pricing, free plans, ratings, features, pros and cons, side by side. Where one comes out ahead, we mark it.

Helper

Native desktop client that puts ChatGPT in its own window instead of a browser tab

3.5Free

Visit Helper (opens Helper in a new tab)

Sigma AI Browser

Private browser with an agent that fills forms and books things, plus an offline local model

3.8Free

Visit Sigma AI Browser (opens Sigma AI Browser in a new tab)

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

  • Lower starting price

    Not comparable

    Not comparable: Helper does not list a price

  • Free plan

    Tie

    Both have one

  • Higher rating

    Sigma AI Browser

    3.5 against 3.8

  • Same job?

    Yes

    Both are Productivity tools

Side by side

Compared onHelperSigma AI Browser
Our rating3.53.8Better
Starts atFreeFree
Free planYesYes
CategoryProductivityProductivity
PlansFreeFree
Key features
  • Native desktop client
  • Builds for macOS, Windows and Linux
  • ChatGPT access outside the browser
  • Its own window in the task switcher
  • Free to use
  • AI agent for form filling, booking and data gathering
  • Eclipse local model running offline
  • Chat with page and deep research
  • Built-in ad blocker and encrypted private profiles
  • Quick Translate and extension support
Pros
  • A real window rather than a tab that gets buried
  • Builds for all three desktop platforms
  • Free
  • A local offline model is what makes the privacy claim credible
  • Agent, chat, research and translation in one browser
  • macOS, Windows and iOS builds available now
Cons
  • A wrapper around OpenAI's service, dependent on its terms and availability
  • Little public information about who maintains it
  • Conversations pass through a third-party client
  • No pricing published, only a discount code
  • The local model is weaker than a hosted one
  • An agent with browser control acts inside every logged-in session
CompanyHelperSigmabrowser OU

Prices come from each vendor's pricing page, last checked 20260814. Check the vendor before you buy.

FAQ

Questions people ask

Is Helper better than Sigma AI Browser?

In our reviews Helper scores 3.5 and Sigma AI Browser scores 3.8. The better pick depends on the job. Helper: Native desktop client that puts ChatGPT in its own window instead of a browser tab. Sigma AI Browser: Private browser with an agent that fills forms and books things, plus an offline local model.

Which is cheaper, Helper or Sigma AI Browser?

Helper: free. Sigma AI Browser: free.

Do Helper and Sigma AI Browser have free plans?

Yes, both have a free plan.

More comparisons

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Sigma AI Browser compared with

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