Grammarly vs Jasper

Grammarly and Jasper sit in the same category. The verdict below is calculated for each role from the tasks, the role fit and the price.

Short answer

Jasper wins for 7 of 15 roles in our data. Grammarly starts at $12/mo and Jasper at $39/mo on the cheapest paid plan.

Role	Better choice	Why
Lawyer	Grammarly	covers 1 of this role's tasks against 0; built for this role; cheaper entry plan
Finance manager	Either one	even on tasks, Grammarly is cheaper to start
Manager	Jasper	covers 3 of this role's tasks against 1
Marketer	Jasper	covers 3 of this role's tasks against 1; part of the role's core toolkit
Sales manager	Jasper	covers 3 of this role's tasks against 1
Data analyst	Grammarly	built for this role; cheaper entry plan; has a free plan
Teacher	Jasper	covers 3 of this role's tasks against 1
Executive assistant	Jasper	covers 3 of this role's tasks against 1
Logistics manager	Either one	even on tasks, Grammarly is cheaper to start
Procurement manager	Grammarly	built for this role; cheaper entry plan; has a free plan
Secretary	Either one	even on tasks, Grammarly is cheaper to start
Recruiter	Grammarly	covers 1 of this role's tasks against 0; cheaper entry plan; has a free plan
Economist	Grammarly	built for this role; cheaper entry plan; has a free plan
Project manager	Jasper	covers 3 of this role's tasks against 1
Social media manager	Jasper	covers 3 of this role's tasks against 1

	Grammarly	Jasper
Vendor	Grammarly	Jasper AI
Category	Documents and writing	Documents and writing
Free plan	Yes: Basic grammar and spelling checks, tone detection, a limited number of text generations a month	No
Cheapest paid plan	Pro, $12/mo	Creator, $39/mo
Top plan	Business, $15/mo	Pro, $59/mo
Tasks covered	1	3

Grammarly: Checks and rewrites English text in any window: email, chat, documents.

Jasper: Marketing copy in your brand voice: campaigns, posts and landing pages from templates.

The extension reads everything you type in the browser, including form fields: decide in your corporate policy whether it is allowed on work computers
Rewriting a sentence changes its legal meaning: in English contracts and claims, accept only spelling fixes
For text in other languages the service offers almost no suggestions; use LanguageTool for that

The brand knowledge base takes public product facts only: unreleased products and prices under NDA stay out
Copy in languages other than English comes out with literal calques: have an editor or LanguageTool proofread it before publishing
The model readily writes benefits the product does not have: check every claim about features against the facts

In our data Jasper is the better choice for 7 of 15 roles. The table above shows the reason for each role.

Grammarly starts at $12/mo and Jasper at $39/mo on the cheapest paid plan.

Grammarly: Yes. Basic grammar and spelling checks, tone detection, a limited number of text generations a month. Jasper: No.