HARPA AI vs Monica (2026): which should you pick?
As of Nov 13, 2026, Monica grades higher than HARPA AI: 3.2 against 2.2 out of 4.0.
Checked Oct 9, 2026 and Nov 13, 2026 · graded Oct 10, 2026 and Nov 13, 2026 by ToolGPA
Monica grades higher on value for money, features, ease of use and platforms. They get the same grade on the free plan.
Price, platforms and features side by side. The table says where each price was read and when.
HARPA AI
Browser extension that runs AI chat and automations on any page
Monica
AI assistant with many models, built around a browser sidebar
Which one is for you
Pick HARPA AI if
- Fits if you want AI on whatever page you are reading, in Chrome
- Works for people who watch web pages or prices and want alerts
Look elsewhere if
- Skip it if you do not use Chrome, as the site names Chrome and only notes for Brave and Edge
- Tight if you stay free: 10 messages a day and 100 command runs
- Pricey if you use a lot of cloud models, as Megatokens are metered and output costs 3 times input
- Watch out: the pricing FAQ says there are no refunds, and euros showed when we read it from India
- Watch out: scheduled commands and advanced automation are on the dearer plan
Pick Monica if
- Fits if you want AI next to whatever you're reading, without switching tabs
- Works for asking two or three models the same thing and comparing the answers
Look elsewhere if
- Skip it if you want one simple price, because basic queries, advanced queries and credits are counted separately
- Tight if you lean on the top models: Pro stops at 200 advanced queries a month, and the "unlimited" Max slows to 100 a day
- Not for you if you need a team plan: accounts are for one person, and sharing one can get it suspended
- Pricey if you want the agent all day: Ultra is $995 a year up front, and payments are final outside the EU, UK and Turkey
- Watch out: in August 2026 Monica set data made since 29 December 2025 to be deleted for users in some regions
How we grade them
| 2.2GPAHARPA AIFair | 3.2GPAMonicaVery good | |
|---|---|---|
| Value for money | CFor Everyone is €14.3 a month billed annually, between the category's middle of $12.42 and its dearer quarter at $18. For Life is €238 once. | BPro is $99 a year, so $8.3 a month, right at this category's cheapest quarter, for models from several AI labs. But 200 advanced queries a month is six or seven a day, and you're paying for the year up front. |
| Free plan and trial | CThe free Demo connects ChatGPT, Claude and Gemini through web sessions, with 10 messages a day and up to 100 command runs. | C40 requests a day, to the basic models only, and images, video, ChatPDF and the agent are short trials. Enough to find out whether you want a sidebar, not enough to stay on. |
| Features | CPage-aware chat, summaries of pages, PDFs and YouTube, commands and monitors. Scheduling and advanced automation are on the dearer plan, and cloud use is metered. | BChat with several models, summaries of pages, YouTube videos and PDFs, translation, writing help, images, video and research agents. Most of the usual AI jobs are in there, each drawing on one of its meters. |
| Ease of use | CA browser extension where you connect web sessions or keys before it works. No store rating is on record. | A4.7 from about 6,800 App Store ratings, and one shortcut opens the sidebar on any page. The plans are the hard part: basic queries, advanced queries and credits each run out on their own. |
| Platforms and integrations | BA browser extension linked to ChatGPT, Claude, Gemini, OpenRouter, Azure, Make, Zapier and n8n. The site names Chrome, with notes for Brave and Edge. | AA Chrome and Edge extension, a web app, Mac, Windows, iPhone and Android. It works inside Gmail, Outlook, YouTube and WhatsApp, and there's a separate API platform for developers. |
| Best for | AI chat and page summaries inside Chrome | many AI models in one browser sidebar |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: HARPA AI and Monica. How we grade
Price against what you get
HARPA AI starts at about $15.98 a month and scores 2.3 out of 4 on features, ease of use and platforms. Monica starts at $8.30 a month and scores 3.7.
Monica scores higher and starts $7.68 a month lower. Of the other AI assistants on the chart, 28 score higher than HARPA AI for less, and 2 score higher than Monica for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- HARPA AI also covers workflow automation.
- Monica also covers grammar & style.
At a glance
| HARPA AI | Monica | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | €14.3 per month, billed annually | $8.3 per month, billed annually ($99 per year) |
| Free plan | Free DEMO plan: ChatGPT, Claude and Gemini through web sessions, limited to 10 messages a day, and up to 100 AI command runs. | 40 requests to basic models a day, basic writing, translation and summaries, and limited trials of image and video generation, ChatPDF and the AI Agent. |
| Free trial | None listed | The help center mentions a trial period, capped at 100 advanced queries; its length and how it starts are not stated |
| Web | ||
| macOS | ||
| Windows | ||
| iOS | ||
| Android | ||
| Browser extension | ||
| Made by | HARPA AI TECHNOLOGIES LLC | Butterfly Effect Pte. Ltd. |
| Price read from | harpa.ai | monica.im |
| Checked | Nov 13, 2026 | Oct 9, 2026 |
Worth knowing
HARPA AI
- The pricing page showed euro prices when read from India and no dollar price could be confirmed. The home page FAQ mentions a $12 starting price, so check at checkout.
- Cloud model use is metered in Megatokens: 1 Megatoken is 1 million input tokens, output tokens cost 3 times as much, and premium models use more.
- The pricing FAQ says there are no refunds or discounts, and a demo period is offered instead.
- It runs inside the browser. The site names Chrome and the Chrome Web Store, with troubleshooting notes for Brave and Edge.
Monica
- The Free plan allows 40 basic-model requests a day and gives only limited trials of image and video generation, ChatPDF and the AI Agent.
- Pro is capped at 5,000 basic and 200 advanced queries a month. Max and Ultra slow to 100 queries a day after 1,600 advanced and 12,000 basic queries in a month.
- Accounts are for personal use only, and Monica says a team subscription has not launched. The prices listed are for annual billing.
- Monica's help center describes an August 2026 transition in which data created since December 29, 2025 was set to be deleted for users in certain regions.
Key features
HARPA AI
- Page-aware AI chat
- Opens on any web page with Alt + A and can use the page's content, search results and uploaded files in its answers.
- Summaries of pages, PDFs and YouTube
- Condenses long videos, articles and documents, and can answer questions about them and jump to timestamps in a video.
- Commands and automation
- Reusable AI commands, over 100 ready-made prompts, scheduled runs and advanced automation, with scheduling and automation on the S2 and lifetime plans.
- Page and price monitors
- Watches a web page for changes or a product for price drops and back-in-stock alerts, and notifies you when something updates.
- Several ways to connect a model
- Connect ChatGPT, Claude or Gemini web sessions, use OpenRouter, Azure or other API keys, or draw on HARPA's cloud connection with a Megatoken balance.
Monica
- Many models in one chat
- Chats with models such as GPT-6.1 Sol, Claude Sonnet 5.5 and Gemini 3.8 Flash from one account, and can show answers from several models side by side for comparison.
- Browser sidebar and toolbar
- The Chrome and Edge extension opens an AI sidebar on any web page, and a toolbar explains, translates or summarizes whatever text you select.
- Summaries of pages, videos and files
- Summarizes web pages and files, pulls highlights with timestamps from YouTube videos, and answers questions about PDFs through ChatPDF.
- Writing and translation
- Drafts and rewrites text on any page, checks grammar, suggests replies in Gmail and Outlook, and translates whole web pages for side-by-side bilingual reading.
- AI Agent tools
- Deep Research, Create Slides, Image Studio and Browser Operator run as agent tasks. Each one spends Advanced Credits from the plan's monthly allowance.
- Image and video generation
- Generates images and video with models such as Nano Banana 2, GPT Image 2.5 Flare, Sora 2 and Veo 3.1, also charged in Advanced Credits.
Plans
HARPA AI
Demo$0
Web session connections limited to 10 messages a day, up to 100 AI command runs, custom commands and web monitors.
For Everyone (S1)€14.3
per month, billed annually; 75 Megatokens a year
Unlimited power messages, cloud models, PDF and YouTube summaries, chat history and web monitors. No scheduling or advanced automation.
For Pros (S2)€19.6
per month, billed annually; 225 Megatokens a year
Everything in S1 plus scheduled commands, advanced automation, and a 10% discount on extra seats.
For Life (X)€238
one-time, paid once, single user only
Lifetime access with 30 Megatokens. Use your own API keys or web sessions. Cloud tokens can be bought at a discount.
Monica
Free$0
40 requests to basic models a day, with limited trials of image and video generation, ChatPDF and the AI Agent. Up to 3 login devices.
Pro$8.3
per month, billed annually ($99 per year)
5,000 basic and 200 advanced model queries a month, 1,500 Advanced Credits, the AI Agent, and image and video generation.
Max$16.6
per month, billed annually ($199 per year)
Called unlimited; queries slow to 100 a day after 1,600 advanced and 12,000 basic a month. 4,500 Advanced Credits. In beta, and shown as a flash sale from $299 per year.
Ultra$82.9
per month, billed annually ($995 per year)
Called unlimited, with the same monthly thresholds as Max before queries slow to 100 a day. 20,000 Advanced Credits and up to 10 login devices.
Ways to pay less
HARPA AI
No public discounts listed.
Monica
- Annual discount
Save 17% with annual billing
The pricing page marks Pro ($99 per year) and Ultra ($995 per year) as saving 17% with annual billing. Max is shown at $199 per year, crossed out from $299, as a 33% flash sale with no end date given.
Common questions
Which is cheaper, HARPA AI or Monica?
As of Nov 13, 2026, Monica is cheaper to start with: $8.30 a month, against about $15.98 a month for HARPA AI. HARPA AI starts at €14.3 per month, billed annually, and Monica starts at $8.3 per month, billed annually ($99 per year).
Which has a free plan, HARPA AI or Monica?
As of Nov 13, 2026, both HARPA AI and Monica have a free plan.
Which platforms do HARPA AI and Monica run on?
As of Nov 13, 2026, only Monica lists a web app and macOS, Windows, iOS and Android apps. Both list a browser extension. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.