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Comparing 4 tools side-by-side

Pricing, features, and use-cases at a glance. Up to 4 tools per comparison.

TOOL	Grammarly Writing AI writing assistant for grammar, tone, and clarity across apps.	Writesonic Writing AI writer and SEO-focused content platform.	Quillbot Writing Paraphrasing tool with grammar checker and summarizer.	Copy.ai Writing AI workflow platform for marketing and sales copy.
PRICING MODEL	Freemium	Paid	Freemium	Paid
STARTING PRICE	$12/mo	$79/mo	$4.17/mo	$29/mo
CATEGORY	Writing	Writing	Writing	Writing
AI AGENT	No	No	No	No
EDITOR'S PICK	No	No	No	No
KEY FEATURES	Real-time corrections Generative rewrite Tone detector Browser extension Plagiarism check	AI Article Writer Chatsonic Botsonic SEO optimizer Fact-checking	7 rewriting modes Summarizer Citation generator AI detector Translator	Workflow builder 90+ templates Brand voice Multi-step agents API access
USE CASES	Email editing Document polishing Tone adjustment Plagiarism checks	SEO articles Ad copy Landing pages Product descriptions	Paraphrasing Summarizing Citation generation Grammar checking	Blog drafts Ad copy Sales emails SEO content
TAGS	#grammar#writing#editor	#copywriting#seo#blog	#paraphrase#grammar#summarize	#copywriting#marketing#workflow
WEBSITE	www.grammarly.com	writesonic.com	quillbot.com	www.copy.ai