TextCortex vs Grammarly AI: Complete Comparison 2026

An in-depth comparison of features, pricing, and user experience to help you make the right choice.

TextCortex

7.8(1,100 reviews)

AI writing assistant with browser extension, custom brand personas, knowledge bases, and multilingual support across 25+ languages.

8.5(8,500 reviews)

AI writing assistant combining grammar checking, tone detection, and generative AI to help teams write clearly and on-brand.

Aspect	TextCortex	Grammarly AI
Best For	Professionals who write across multiple apps and want AI help everywhere	Professionals who write daily and need everything polished before sending
Pricing Model	Freemium	Freemium
Starting Price	Free	Free
Deployment	cloud	cloud
Platforms	WEB	WEB, IOS, ANDROID, MAC, WINDOWS
Rating	7.8/10	8.5/10

Browser extension brings AI writing directly into Gmail, Google Docs, LinkedIn, and 30,000+ sites
Brand personas create distinct AI writing styles for different use cases
Knowledge base feature lets the AI reference your company docs for more accurate output
Free plan with 20 daily creations is the most generous in the category
Strong multilingual support across 25+ languages with natural-sounding output
Pricing at $6.99-27.99/month significantly undercuts major competitors

Standalone web editor is less polished than competitors like Jasper or Cohesive
Template library (~60) is smaller than platforms offering 200+
Long-form content generation is decent but not a standout feature
Small team (11-50) means slower feature releases than bigger competitors
Less brand recognition makes it harder to find community resources and tutorials

Works everywhere you write - browser, desktop, mobile, Slack, Docs, Office, Notion
Grammar and tone correction engine is still the most accurate in the industry
Free tier is genuinely useful with basic corrections and 100 AI prompts monthly
GrammarlyGO rewrites and compositions are clean and professional for business use
Over 30 million daily users means the product is battle-tested at massive scale

Can't generate long-form content from scratch like Jasper or Writesonic
GrammarlyGO prompt limits (100-1,000/month) frustrate heavy AI users
SEO features are minimal - no keyword research or content optimization scoring
AI suggestions sometimes over-correct casual writing into stiff corporate tone
Premium at $12/month feels pricey for what many still perceive as a grammar checker

Product	Pricing Model	Starting Price
TextCortex	freemium	Free0
Grammarly AI	freemium	Free0

Choose TextCortex if...

Professionals who write across multiple apps and want AI help everywhere

Choose Grammarly AI if...

Professionals who write daily and need everything polished before sending

Explore more alternatives or read in-depth reviews to make your decision.