HARPA AI
An AI assistant built into the browser, it aggregates multiple mainstream models, can summarize web pages and videos, write emails on behalf of users, monitor page changes and crawl data, and is suitable for research, marketing and daily office work.
Updated: 2026-10-26
What is HARPA AI?
HARPA AI is a Chrome browser extension that packs models like GPT, Claude, Gemini, DeepSeek, Llama, and Perplexity into a single sidebar, which can be summoned by pressing Alt + A on any webpage. Instead of being a standalone chat product, it works closely with the current page: it reads the articles, videos, and emails you are viewing, and then summarizes, rewrites, or performs automation on the spot. The official claims that 500,000 professionals are already using it.
Who is it for?
- Researchers and intelligence professionals: Quickly go through a large number of web pages, reports and videos, and take notes with sources attached.
- Marketers and SEO professionals: Conduct keyword research, create content outlines, monitor competitor pages and track prices.
- Job seekers and recruiters: Rewrite resumes, generate LinkedIn replies and cover letters.
- Developers: Explain errors on the spot, translate code, and rewrite code across languages on documentation pages.
Key features
6Multi-Model Side-by-Side
Officially supports GPT-5.4, Claude 4.6, Gemini 3.1, DeepSeek, Llama 4 and Perplexity, allowing you to switch models at the same entry to compare answers.
Web & Video Summarization
One-click extraction of key points from blog posts, PDFs, and hours-long YouTube videos, with support for jumping to corresponding timestamps and continued questioning about video content.
Answer Engine
Provides answers with source citations next to Google search results. The official claims it scans multiple websites to summarize content, reducing fabrications out of thin air.
Gmail Assistant
Categorize your inbox by subject, summarize long email threads, and draft replies in your tone.
Page Monitoring & Scraping
Set up web monitoring to regularly check for updates and receive notifications; it can also scrape product prices, inventory, and listing data, and integrate with Zapier, Make, n8n to trigger subsequent workflows.
Hundreds of Ready-to-Use Commands
The official says it comes with over 100 practical commands integrated with the current page, covering scenarios such as SEO audits, resume optimization, language learning, and code modification.
How to use HARPA AI
- 1Install the extension first before logging in: You can use the basic functions without binding an account, and connecting your own API Key can get higher usage limits and more model options.
- 2Prioritize keyboard shortcuts: Memorize the //, F, G, P, T, S, E commands, which are much faster than clicking the menu every time.
- 3Narrow permissions: Grant read access only to the sites you need, and turn off automatic reading on pages that involve account passwords.
- 4Privacy: The official states that conversations and operations are not logged, comply with GDPR, and support local models; for enterprise data, it is still recommended to review the compliance terms first.
Traffic & popularity
Data month Sep 2026
HARPA AI receives about 776.0K visits per month and ranks #69,905 worldwide.
Monthly visits
12 monthsTraffic sources
- Direct69.3%
- Search17.1%
- Referrals5.0%
- Social3.9%
- AI assistants2.4%
- Other2.3%
Top countries
- United States14.3%
- India12.4%
- Brazil10.7%
- Spain7.4%
- China5.4%
Estimated from third-party traffic data.
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