Grammarly AI vs Frase: Complete Comparison 2026

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

Grammarly AI

8.5(8,500 reviews)

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

8.0(1,800 reviews)

AI-powered SEO content tool that researches, outlines, writes, and optimizes articles to rank higher in search results.

Aspect	Grammarly AI	Frase
Best For	Professionals who write daily and need everything polished before sending	SEO content writers producing search-optimized articles who want research and writing in one tool
Pricing Model	Freemium	Subscription
Starting Price	Free	$15/mo
Deployment	cloud	cloud
Platforms	WEB, IOS, ANDROID, MAC, WINDOWS	WEB
Rating	8.5/10	8.0/10

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

SERP analysis shows exactly what ranking articles cover so you can compete effectively
Content optimization scoring rivals Surfer SEO at a fraction of the price
Solo plan at $15/month makes professional SEO content tools accessible to anyone
Topic model identifies gaps in your content that competitors are covering
Research-to-writing workflow is seamless - analyze, outline, write, optimize in one tool

AI writing quality is weaker than Jasper or Writesonic for creative and marketing copy
Interface is functional but feels utilitarian and dated compared to polished competitors
No brand voice training means output lacks personality and brand consistency
AI word limits on lower plans require the $35/month Pro add-on for serious use
Steeper learning curve than simpler AI writing tools - takes time to master the workflow

Product	Pricing Model	Starting Price
Grammarly AI	freemium	Free0
Frase	subscription	$15/mo

Choose Grammarly AI if...

You need Professionals who write daily and need everything polished before sending and prefer freemium pricing.

Choose Frase if...

You need SEO content writers producing search-optimized articles who want research and writing in one tool and prefer subscription pricing.

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