Overview

HARPA AI functions as a hybrid AI-engine browser extension, combining capabilities from various large language models such as OpenAI GPT, Anthropic Claude, Google Gemini, DeepSeek, Perplexity, and Meta Llama. It is designed to automate a wide range of online activities, acting as an AI agent for web browsing, search, and automation tasks. The tool allows users to summarize YouTube videos, blogs, and PDFs, draft emails, proofread content, generate articles, extract data, and monitor web page updates.

Core Functionality and Use Cases

  • Web Automation: Builds AI-powered automations to navigate websites, extract data, click buttons, fill forms, and trigger IFTTT chains with services like Make.com, Zapier, and n8n.
  • Content Generation: Mimics user writing styles to craft emails, social media posts, articles, and other text content, including SEO-optimized articles of unlimited length.
  • Information Retrieval: Provides hallucination-free AI responses alongside Google Search results with source citations, and can extract key takeaways from videos or web pages.
  • Productivity & SEO: Offers features for AI-driven SEO audits, keyword extraction, content calendar creation, and competitive analysis. It also includes quick shortcuts for grammar checks, rephrasing, translation, and explanations.
  • Custom AI Agents: Enables users to create custom AI agents with access to page content, search, and automation functions, effectively bringing custom GPTs to the browser.
  • Monitoring & Alerts: Tracks price drops, back-in-stock alerts, and general web page updates, notifying users of changes.
  • Language Learning: Acts as a practical language learning assistant, correcting mistakes, explaining grammar, and building personalized learning plans.

HARPA AI emphasizes privacy by design, running locally on the user's computer without storing conversations or actions on remote servers, and is GDPR compliant.

Key features

  • Integrates multiple AI models (GPT, Claude, Gemini, Perplexity, Llama)
  • Automates web browsing, data extraction, and form filling
  • Summarizes YouTube videos, articles, and PDFs
  • Generates and refines articles, emails, and social media posts
  • Performs AI-driven SEO audits and keyword research
  • Monitors web pages for updates and price changes
  • Creates custom AI agents with web access
  • Assists with language learning and grammar correction

Who uses it

HARPA AI is designed for professionals across various fields, including marketers, SEO specialists, content creators, writers, developers, HR professionals, recruiters, students, educators, and anyone looking to automate and enhance their online productivity.

Pros

  • Combines multiple leading AI models in a single browser extension.
  • Offers extensive web automation capabilities for data extraction and task execution.
  • Provides a basic free tier and a demo period for premium features, allowing users to try before buying.
  • Prioritizes user privacy by running locally and not storing user data on remote servers.
  • Supports integration with external automation platforms like Zapier and Make.com.

Cons

  • Full access to premium features and advanced AI models requires a paid subscription.
  • Does not currently offer a native Firefox version, limiting accessibility for some users.
  • Server API is a planned feature, indicating current limitations for server-side integrations.
  • Some advanced features like CloudGPT connection and chat history are exclusive to paid plans.

Our take

HARPA AI serves as a versatile browser-based AI assistant, streamlining a wide array of online tasks from content generation and summarization to web automation and SEO analysis. Its integration of multiple AI models and focus on privacy make it a practical tool for enhancing digital productivity.

Pricing plans

Free

$0

  • AI-powered Chrome extension
  • AI chat and commands on websites
  • Connect to ChatGPT, Claude, and Google Gemini through web sessions
  • Limited free AI messages
  • Page-aware AI responses
  • Summarize webpages, PDFs, files, and YouTube videos
  • AI-powered text writing, rewriting, and translation
  • Create custom reusable commands
  • AI vision features
  • Monitor website changes and prices
  • Limited automations and custom commands
  • No paid subscription required for basic access

Everyone

$12/month

  • 75 Megatokens per year
  • Access to cloud AI models, including GPT-5.4 and other supported models
  • Connect to ChatGPT, Claude, and Google Gemini
  • API connections through OpenRouter, Straico, Azure, and other providers
  • AI vision features
  • Summarize PDFs, files, and YouTube videos
  • Chat history across devices
  • Create reusable commands
  • Customize default commands
  • Monitor prices and webpages
  • Page-aware responses
  • Multiple AI connections
  • YouTube summarization
  • Data privacy features

Pros

$19/month

  • 225 Megatokens per year
  • Access to cloud models including GPT-5.4, Claude Sonnet 4.6, Gemini 3.1 Pro, DeepSeek V3, Perplexity Pro, Grok 4.1, and Llama 4
  • Connect to ChatGPT, Claude, and Google Gemini
  • API connections through OpenRouter, Straico, Azure, and other providers
  • AI vision features
  • Summarize PDFs, files, and YouTube videos
  • Chat history across devices
  • Create reusable commands and customize default commands
  • Monitor prices and webpages
  • Schedule commands
  • Advanced AI automation
  • Page-aware responses
  • Multiple AI connections
  • YouTube summarization
  • Data privacy features
  • Team collaboration options

FOR LIFE

$240 one-time payment

  • Lifetime access to HARPA AI features
  • 30 Megatokens included
  • Unlimited web-session connections to ChatGPT, Claude, and Google Gemini
  • Bring your own API keys (BYOK) to control AI costs
  • API connections through OpenRouter, Straico, Azure, and other providers
  • AI vision features
  • Summarize PDFs, files, and YouTube videos
  • Chat history across devices
  • Create reusable commands and customize default commands
  • Monitor prices and webpages
  • Schedule commands
  • Advanced automation
  • Page-aware responses
  • Multiple AI connections
  • YouTube summarization
  • Data privacy features
  • Future product updates included, although some new features may remain exclusive to subscription plans
  • One active device at a time.

Pricing details are provided for reference and may differ from the vendor's current plans.

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