Tools · Comparison

Harpa.ai vs Mentioned vs NBot

All three are writing & content tools. Here is what separates them.

	Harpa.ai	Mentioned	NBot
What it is	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…	Mentioned helps you reach out to people and companies you've mentioned in your blog posts with automatic email campaigns. Keep track of your campaign…	Build custom AI trackers that monitor the web for content you care about. Discover gems, filter noise, and stay ahead in any niche. Start tracking for free.
Category	Writing & Content	Writing & Content	Writing & Content
Pricing	Free · Free	Paid	Freemium · $9.99 /monthly
How it bills	Free	Not published	Flat monthly
Free tier	Yes	No	Yes
Rating	Not yet rated	Not yet rated	Not yet rated
Features	—	—	—
What works	Has a free tier, so it can be tried before paying Free to use Sits in Writing & Content, one of the better-covered categories here — easy to compare	Sits in Writing & Content, one of the better-covered categories here — easy to compare	—
What does not	206 other tools in this catalogue claim to do the same job	No free tier — it has to be paid for before it can be tried Does not publish a price on its own site, so the cost is only clear after signing up 206 other tools in this catalogue claim to do the same job 80 tools in the same category have a free tier	—