HARPA AI vs Arvin AI
HARPA AI is a Chrome extension that combines chat with browser automation: 100+ commands, page monitors, price tracking, data extraction to CSV/JSON, form filling and Zapier/Make webhooks; free DEMO tier, S1 $12/month billed annually, S2 $19/month annual, $240 lifetime (verified Aug 2026). Arvin AI is an all-in-one browser assistant (chat, writing, translation, PDF tools, image/design tools) with GPT-4o, Claude and Gemini access on a credit-based freemium model with free daily credits; its public pricing page returned 404 as of August 2026, so confirm the current Pro offer inside the extension before paying (checked Oct 2026). Pick HARPA if you need automation (monitoring, scraping, macros); pick Arvin if you want a broad multi-model sidekick for writing, translation and design tasks. No hands-on test was run; no winner declared.
| Decision point | HARPA AI | Arvin AI |
|---|---|---|
| Best suited to | Browser-heavy workers who want AI assistance and automation on any website | Arvin is an AI web application and browser extension powered by GPT, Claude and Gemini, plus a separate Arvin Design product for one-click logo, signature and business card creation. It offers AI chat, article/email writing, grammar checking, web translation into 25+ languages, image generation tools and PDF conversion utilities. It is freemium: free daily credits can be used across services including GPT, Claude, Gemini, summarizers and design agents; paid plans exist and a refund policy requires refund requests within 7 days of subscription start. It is distributed as a Chrome and Edge extension opened with Alt/Option + A, plus a web app and a design studio; the site lists free tools such as a web translator, background remover and PDF converters, with more features marked as being developed. |
| Plans and cost | Homepage pricing seen on 2026-11-02: basic free tier plus a demo period for premium features; Basic S plan starts at $12/month paid annually, including CloudGPT connection, cloud command storage and chat history. Full plan details were not shown on the visited page; confirm before paying. | Arvin is free and safe; users receive daily credits usable for GPT, Claude, Gemini, summarizers and design agents. |
| Limitations | ['No authenticated product test was performed; automation reliability across sites was not independently verified', 'Generative features require a separate AI provider connection, so total cost includes that provider where applicable', 'Some sites and browsers are limited: the homepage notes it does not work with Google Sheets yet and has no Firefox version'] | Usage limits have not been verified; confirm your required conditions with the vendor. |
Use the same input
You're a researcher monitoring price changes across dozens of competitor pages, and also want webpage summaries and translation - choosing between 'automation' and 'multi-model writing assistant'.
What a successful result must preserve
Compare by automation ability (monitoring/scraping/macros), model coverage, free-tier allowances, pricing transparency and privacy claims.
Evidence and test status
Pricing and feature comparison based on publicly available information. Plan prices, allowances and feature claims below come from the two vendors' official pricing and feature pages plus recent third-party pricing reads, re-checked October 2026. We did not run a hands-on test on either tool; no quality winner is declared.
- HARPA AI — HARPA AI official homepage ↗ (reviewed 2026-11-01)
- Arvin AI — Arvin AI - Best ChatGPT Chrome Extension Powered by GPT-4o ↗