HARPA AI
Turn your browser into an AI automation agent
- Category
- Chatbots & Assistants
- Pricing
- Free demo tier; paid plans from $12/mo (billed annually) up to $19/mo, plus a $240 lifetime option
- Best for
- HARPA AI is best suited to power users, marketers, researchers and small teams who live in the browser and want to automate repetitive web tasks — scraping, monitoring, summarizing, drafting — without paying for multiple separate AI subscriptions.
- Official site
- harpa.ai
- Last updated
- August 2026
HARPA AI is a Chrome browser extension, built by HARPA AI Technologies (based in Finland), that embeds AI models directly into the browsing experience. Triggered with a hotkey (Alt+A) or by typing "//" on any page, it opens a sidebar that can answer questions about the page you're on, summarize long YouTube videos and PDFs, draft emails and social posts, and run any of 100+ pre-built automation commands. Rather than positioning itself as just another chatbot wrapper, HARPA frames itself as an "AI automation agent": it can scrape structured data from pages into CSV or JSON, monitor pages or prices for changes and alert the user, fill out forms, and trigger external workflows in Zapier, Make.com, or n8n.
HARPA differentiates itself by bundling access to multiple leading models — GPT-5.x, Claude Sonnet, Gemini Pro, Grok, DeepSeek, Perplexity and Llama — through either its own Cloud GPT connection or free web-session connections to ChatGPT, Claude and Gemini, all under one subscription. It markets this as replacing over $140/month in separate AI subscriptions for a $12–19/month plan. The extension has built a large user base (roughly 300,000–500,000 users cited across its own materials) and holds a strong 4.7 out of 5 rating from about 3,200 reviewers on the Chrome Web Store, having also been recognized among Google's favorite Chrome extensions of 2025. Its privacy design reads pages only on explicit user action and does not store server-side logs, positioning it for users who want AI automation without their browsing data flowing to a third party's servers.
HARPA AI is best suited to power users, marketers, researchers and small teams who live in the browser and want to automate repetitive web tasks — scraping, monitoring, summarizing, drafting — without paying for multiple separate AI subscriptions. It's a weaker fit for users who just want a simple standalone chatbot, or for teams needing enterprise-grade support and refund guarantees, since HARPA's support is primarily self-serve (Discord, email) and purchases are final.
Key features
Page-Aware AI Chat
Ask questions about the exact page you're viewing; HARPA reads and reasons over the page content in context rather than requiring copy-paste.
Automation Commands Library
100+ predefined commands cover tasks like SEO audits, email drafting, keyword extraction, and social media post writing, runnable with one click.
Web & Price Monitors
Watch any page for changes — such as price drops or competitor website updates — and receive notifications when they occur.
Data Extraction
Scrape structured data from web pages and export it directly to CSV or JSON for downstream use.
Workflow Triggers
Fire Zapier, Make.com, or n8n webhooks directly from a HARPA command to connect browser automation to broader workflows.
Multi-Model Cloud Connections
Route requests to GPT-5.x, Claude Sonnet, Gemini Pro, DeepSeek, Perplexity, Grok, or Llama from a single sidebar.
File & YouTube Summarization
Summarize PDFs, documents, and long YouTube videos into structured, actionable notes.
HARPA Grid API
Run custom HARPA commands and browser automations programmatically for more advanced, developer-driven use cases.
Pricing breakdown
DEMO (Free)
- Up to 10 web-session chat messages per day
- Up to 100 total AI command runs
- Access to predefined and custom commands and web monitors
for Everyone
- 75 Megatokens per year
- All Cloud AI models (GPT-5.4, Sonnet 4.6, Gemini 3.1 Pro, DeepSeek, Perplexity, Grok, Llama)
- Web session connections, AI vision, PDF/file summarization
- Reusable commands (no scheduling or advanced automation)
for Pros
- 225 Megatokens per year
- Everything in "for Everyone"
- Scheduled commands
- Advanced automation
for Life
- 30 Megatokens included
- Bring your own API keys, or unlimited web session connections for life
- All Pro-tier features
Token Top-Up
- +20 Megatokens added to any plan's balance
- Faster, more reliable connection than free web sessions
- No rate limits or country restrictions
Pros and cons
Pros
- Bundles seven-plus premium AI subscriptions (ChatGPT, Claude, Gemini, Grok, Llama, Perplexity, DeepSeek) into one $12–19/month plan, which HARPA's own pricing page frames as replacing over $140/month of separate subscriptions.
- Goes well beyond chat: page monitors, scrapers, and webhook triggers to Zapier/Make/n8n make it a genuine browser automation agent, not just an AI sidebar.
- Highly rated on the Chrome Web Store — 4.7 out of 5 across roughly 3,200 ratings — and named one of Google's favorite Chrome extensions of 2025.
- Privacy-forward design: reads pages only on explicit user action, does not store server-side logs, and cloud model calls aren't used for training.
- The "for Life" lifetime plan lets users bring their own API keys and use web session connections indefinitely for a single one-time payment, appealing to cost-conscious long-term users.
Cons
- The sheer volume of features (commands, monitors, modes, model connections) creates a real learning curve; several reviewers describe the interface as feeling dated or confusing at first.
- HARPA offers no refunds on any purchase — its stated policy is to rely on the free DEMO tier for evaluation instead, which is less forgiving than competitors with 14–30 day refund windows.
- Billing in "Megatokens" is more transparent than an opaque credit system but still requires users to estimate consumption per task type, since page-aware commands consume more tokens than plain chat messages.
- Independent review volume on major B2B platforms like G2 is very thin (essentially a single review), so buyers have limited peer validation beyond the Chrome Web Store.
What reviewers say
HARPA AI holds a strong 4.7 out of 5 rating from roughly 3,200 Chrome Web Store reviewers, making it one of the more consistently well-reviewed AI browser extensions, even though its footprint on B2B platforms like G2 is still minimal.
Frequently praised
- Genuinely useful for summarizing, writing, and extracting information across the web
- Automations save time and can replace several other extensions
- Combines multiple AI models in one place at a lower cost than separate subscriptions
Frequently criticized
- Feature depth and interface can feel confusing or dated to new users
- No refunds on any purchase
- Isolated reports of billing/credit issues and slow support response
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Compare →Frequently asked questions
Is HARPA AI free?
Yes, HARPA offers a free DEMO plan with up to 10 web-session chat messages per day and 100 total AI command runs; paid plans remove those daily limits and add Cloud AI model access.
What AI models does HARPA connect to?
HARPA connects to GPT-5.x, Claude Sonnet, Gemini Pro, DeepSeek, Perplexity, Grok and Llama, either through its own Cloud GPT connection or through free web-session connections to ChatGPT, Claude and Gemini.
What is a Megatoken?
A Megatoken is 1 million input tokens (roughly 750,000 words) consumed on HARPA's Cloud AI connection; output tokens cost about 3x input tokens, and premium models consume more tokens per request than efficient models.
Does HARPA AI offer refunds?
No, HARPA does not offer refunds; instead it provides a free demo period on every paid feature so users can evaluate before purchasing.
Can HARPA automate tasks beyond chatting?
Yes, HARPA can scrape and export web data, monitor pages or prices for changes, fill forms, and trigger Zapier, Make.com or n8n webhooks in addition to answering page-aware questions.
What's the difference between the "for Pros" and "for Life" plans?
"for Pros" is a $19/month subscription with 225 Megatokens per year, scheduled commands and advanced automation; "for Life" is a single $240 payment that gives lifetime access to the app itself (bring your own API keys or use free web-session connections), with Cloud AI tokens purchasable separately at a discount.
Ready to try HARPA AI?
Head to the official site to explore pricing and start a free trial where available.
Visit HARPA AI →