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HARPA AI Review

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Chrome extension that puts GPT-5, Claude, Gemini, DeepSeek, and more on any webpage for browsing automation, writing, and summarization.

Chat Frontends & ClientsWriting Assistants

Verdict

HARPA AI is one of the most feature-rich AI browser extensions available, trusted by 500,000+ professionals. It stands out for integrating virtually every major LLM into a single Chrome extension with strong privacy guarantees — no conversation logging, GDPR compliance, and local model support. The tradeoff is breadth over depth: power users managing complex workflows may prefer dedicated tools for SEO, scraping, or email separately.

What it does

HARPA AI combines every AI in one Chrome extension: OpenAI GPT-5.4, Anthropic Claude 4.6, Google Gemini 3.1, Grok, Perplexity, DeepSeek. It automates your online work and saves time searching, writing, coding and summarizing on the web.

Best for

Professionals and individuals seeking to automate their online work and improve productivity.

At a glance

Free planYes
Login requiredYes
MemoryNo
VoiceNo
Image generationNo
Group chatNo
Mobile appNo
NSFW policyRestricted
PricingFree + paid — Free tier available; paid plans unlock higher usage

Pros & cons

Pros
  • Integrates GPT, Claude, Gemini, DeepSeek, Llama in one extension
  • No conversation logging; GDPR compliant
  • 100+ ready-made page-aware automations
  • YouTube, PDF, and Gmail summarization built-in
Cons
  • Chrome-only — no Firefox or Safari support
  • Feature breadth can be overwhelming for new users
  • Effectiveness tied to third-party API keys/costs

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Frequently asked

Is HARPA AI free to use?
Yes. HARPA AI has a free plan — Free tier available; paid plans unlock higher usage
Does HARPA AI have memory?
No persistent memory — sessions don't carry over by default.
Can HARPA AI do voice or images?
Voice: no. Image generation: no.
What are the best alternatives to HARPA AI?
Browse the AI Tools Directory for related tools.

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Notes from users

Concrete observations only — pricing changes, real-world feature behavior, what didn't work for you. Vague hot-takes get filtered out by automated review. No links allowed.

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