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HARPA AI vs Voila

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Voila publishes a starting price ($10); HARPA AI does not. Both have a free tier.

HARPA AIBrowser extension pairing chat models with web page automationVoilaHotkey AI assistant in the browser and on the desktop for drafting, rewriting and asking about a page

Side by side

FactHARPA AIVoila
CategoryBrowser Extensions & CopilotsBrowser Extensions & Copilots
Pricing modelFreemiumFreemium
Starts at—$10 month
Public APINoNo
PlatformsWeb, Chrome ExtWeb, macOS, Windows, iOS, Android, Chrome Ext
CompanyHARPA AI TECHNOLOGIES LLCVoila
Launched—2023
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

HARPA AI

The strongest option if you want one extension that both discusses a page and acts on it, and it earns its price only if you actually build repeatable web workflows. For plain summaries and a chat sidebar, cheaper single-purpose extensions do the same job.

Pros

  • Commands run against the live DOM, so they work on pages behind a login
  • Bring-your-own-key and web-session modes keep running costs down
  • Registered EU entity with GDPR and ISO 27001 claims, unusual for an extension
  • Lifetime licence exists for people who refuse subscriptions

Cons

  • The command builder has a genuine learning curve
  • Token metering makes monthly spend hard to forecast
  • No developer API of its own, despite the automation positioning
  • Automations break when target sites change their markup

Voila

Voila's argument is availability rather than model quality: the same assistant answers on a hotkey in five browsers, two desktops and two phones, so you stop copying text into a chat tab. Pricing by request instead of by feature is honest and easy to reason about. What it does not offer is any way to automate — there is no API, no workflow builder, and the vendor stays anonymous about who runs it.

Pros

  • Extension covers Chrome, Firefox, Edge, Brave and Safari, plus Windows, macOS, iOS and Android apps
  • Works on the current page or selection via hotkey rather than requiring copy-paste into a chat
  • Handles pages, documents, images and YouTube transcripts as inputs, not just typed text
  • Request-count pricing gives every tier the same feature set, so you only pay for volume
  • Free tier is 250 requests with no card

Cons

  • Free tier is a one-off allowance, not a recurring monthly quota, so it runs out permanently
  • No API and no automation surface — everything is manual and interactive
  • The site names no company, address or jurisdiction; ownership had to be inferred from startup directories

Which one fits

Choose HARPA AI if you need

  • Sales and research work that repeats the same extract-then-summarise loop across many pages
  • People who prefer bringing their own model API keys over another per-seat AI subscription
  • Watching pages for price or stock changes and firing alerts

Choose Voila if you need

  • Rewriting and replying inside email, docs and web forms without switching tabs
  • Summarising a page, PDF or YouTube transcript while you are already looking at it
  • People who want one assistant across browser, desktop and phone on one subscription

More comparisons

All HARPA AI alternatives →All Voila alternatives →Browse all Browser Extensions & Copilots →