Harpa AI vs Merlin AI

Harpa AI is freemium — a usable free tier with paid plans above it. Merlin AI is freemium — a usable free tier with paid plans above it. Both are listed under Browser Extensions & Copilots, so this is a like-for-like comparison. Neither is ranked above the other — Flocci carries no sponsored placement.

Harpa AI vs Merlin AI — straight answers

Harpa AI vs Merlin AI: what is the difference?

Harpa AI is freemium — a usable free tier with paid plans above it and is listed for AI web automation and monitoring. Merlin AI is freemium — a usable free tier with paid plans above it and is listed for works on any website. Both sit in Browser Extensions & Copilots.

Is Harpa AI or Merlin AI cheaper to start with?

Neither — Harpa AI and Merlin AI are both freemium, so the choice comes down to capability rather than cost. Both entries list what they uniquely do above.

Which should I choose, Harpa AI or Merlin AI?

Choose Harpa AI if you need AI web automation and monitoring; choose Merlin AI if you need works on any website. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.

Harpa AI compared with Merlin AI: pricing tier, category, listed capabilities and links.
 Harpa AIMerlin AI
Pricing tierFree tier + paid plansFree tier + paid plans
Free to startYesYes
CategoryAI Chat & AssistantsAI Chat & Assistants
TypeBrowser Extensions & CopilotsBrowser Extensions & Copilots
Listed capabilities
  • AI web automation and monitoring
  • Track prices and page changes
  • Scrape and summarize sites
  • Custom command workflows
  • Works on any website
  • Summarize YouTube, articles and PDFs
  • Multiple frontier models in one place
  • Social-media reply generator
Tagsbrowser extension, automation, web agent, monitoring, scraping, freebrowser extension, chrome, summary, youtube, chat, free
Websiteharpa.aigetmerlin.in
Full pageHarpa AI details →Merlin AI details →
AlternativesHarpa AI alternatives →Merlin AI alternatives →

Firefox Smart Window

Browser Extensions & Copilots
freeNew
  • Built-in Firefox AI assistant that answers questions about the page and open tabs and searches browsing history in natural language
  • Switch models mid-chat: Google Gemini, Alibaba Qwen, OpenAI gpt-oss-120b, and Mistral Small 4 (added Sept 2026)
  • Free with no subscription; beta for macOS and Windows in the US, Canada and France, UK and Germany expected later
  • Conversations stay local by default; Mistral partnership uses zero data retention

Gemini in Chrome

Browser Extensions & Copilots
freeNew
  • Gemini side panel that answers questions about the current tab and across tabs
  • Summarizes pages and videos, compares products
  • Available on desktop and Android for US users; expanded to Canada, NZ, India and more
  • Auto browse agent reserved for paid Google AI plans

Opera Browser AI (Aria)

Browser Extensions & Copilots
free
  • Free, native AI assistant built into Opera's mainstream and GX browsers, no separate app needed
  • Powered by a mix of OpenAI GPT and Google Gemini models under the hood
  • 2025-2026 upgrade added faster models, higher usage limits and access to open-source local models

Page Assist

Browser Extensions & Copilots
freeNew
  • Open-source (MIT) sidebar and ChatGPT-style web UI for local models via Ollama, LM Studio or Chrome's built-in Gemini Nano
  • Chat with the current webpage without sending data to a cloud service
  • Works on Chrome, Edge, Brave, Firefox, Vivaldi and Zen; about 8.2k GitHub stars

MaxAI.me

Browser Extensions & Copilots
freemium
  • One-click rewrite, reply and summarize
  • Chat with any page or image
  • Instant translation and grammar fixes
  • Prompt library built in

Monica

Browser Extensions & Copilots
freemium
  • All-in-one AI copilot for the browser
  • Access to GPT, Claude & Gemini
  • Writing, translation and search tools
  • Desktop app and memo features