Jasper vs Grammarly

Pick up to 4 tools and see their free plans, entry prices, platforms and limits in one table. Every fact comes from each vendor's own pages, checked 23 September 2026.

Compared on	Jasper Free trial · from $59/seat/mo Visit Remove	Grammarly Free plan · from $12/member/mo Visit Remove
What it is	AI platform with agents and brand controls for marketing content	AI writing assistant for grammar, tone, rewrites and text generation
Free plan	No	Spelling, grammar and tone feedback, plus 100 AI prompts (the plans page does not state a period for the free prompts).
Cheapest paid plan	$59/seat/mo billed annually (Pro)Jasper pricing	$12/member/mo billed annually (Pro)Grammarly pricing
What it covers	Includes 1 seat, 2 Brand Voices, 5 Knowledge assets and 3 Audiences.	$144 per member per year on annual billing; quarterly option $60 per member every three months; 2,000 AI prompts per member per month.
Free trial	7-day free trial of Pro	7-day free trial of Pro
Platforms	Web, Chrome extension, API	Windows, macOS, Chrome extension, iOS, Android
Integrations (vendor's figure)	Not stated	Not stated
Open source	No	No
Good for	Drafting campaign copy, blog posts and social posts in a set brand voice Keeping campaign messaging consistent with saved brand voices and audiences Running repeatable content workflows for a small marketing team	Proofreading emails and documents before sending Adjusting the tone of client messages Checking reports for plagiarism before publishing
Watch out for	No free plan; only a 7-day trial Pro includes 1 seat with 2 Brand Voices, 5 Knowledge assets and 3 Audiences API access and the custom agent builder require the custom-priced Business plan	Free plan includes 100 AI prompts; Pro allows 2,000 per member per month Plagiarism and AI-text detection require Pro Unlimited prompts, BYOK encryption and custom roles are Enterprise-only
Made by	Jasper AI, Inc.	Superhuman Platform (company formerly named Grammarly)

Entry prices are the cheapest paid plan, as each vendor publishes it; “What it covers” says what that price is per (a user, a channel, a brand, a number of contacts). The sources are listed on each tool's page.

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