Grammarly vs Jasper: license, pricing and features compared (October 2026)

Grammarly and Jasper are both listed under Writing. Pricing model: Grammarly is "Freemium"; Jasper is "Free trial". Free tier: Grammarly: $0 per month, 100 prompts per month. Jasper: 7-day free trial. Grammarly is the better fit for: anyone polishing emails and documents. Jasper is the better fit for: marketing teams needing brand control. Facts were read from vendor and GitHub pages on Oct 25, 2026 and are Reported; what we ran ourselves is under What we measured.

Our pick: Pick Grammarly for anyone polishing emails and documents; pick Jasper for marketing teams needing brand control. No overall winner: we have not benchmarked them against each other. Updated Oct 26, 2026 (America/Chicago).

By Agentic Weekly, operated independently from Texas, US · Published Oct 25, 2026 · Last updated Oct 26, 2026 (America/Chicago) · How we work

Evidence: Reported for both tools. The facts in the tables were read from each vendor's own pages and the public GitHub API on 2026-10-25 (America/Chicago). The What we measured section says what we have not run yet; anything we could not confirm is marked as not captured.

Grammarly

Reported

AI writing assistant that works across apps; Free $0, Pro $12 per month, Enterprise custom.

Jasper

Reported

AI platform for marketing teams with brand governance and AI visibility tracking; 7-day free trial.

Side by side, from what we recorded

Each row compares one recorded fact for both tools. Rows are not weighted and nothing is added up into a score; the note under each row says what the marker means.

Evidence
Reported for Grammarly
Reported for Jasper
Tested = we ran it (smoke test); Reported = we read official sources
Pricing we could verify
Verified from official page (Grammarly is ahead on this row) for Grammarly
Not verified for Jasper
About our evidence only, not about the price
Steps in our setup guide
2 for Grammarly
2 for Jasper
Counts our guide's steps, not difficulty
Sources we cite
2 for Grammarly
1 for Jasper
How much we had to read; more is not better

A list of recorded differences, not a quality score or a ranking. We have not benchmarked these tools against each other; the smoke-test row links each tool's own log. How we label evidence.

What we measured

We have not run either Grammarly or Jasper ourselves yet, so nothing on this page is Tested; it is Reported from vendor and GitHub pages. Below is what we will run, so the comparison can rest on our own results.

Our own tests for Grammarly and Jasper
Test	Grammarly	Jasper
Hands-on test log (install and a real task)	Not tested yet. What we will run: our writing and instruction-following tests (same prompts, blind-rated, code-checked).	Not tested yet. What we will run: our writing and instruction-following tests (same prompts, blind-rated, code-checked).
Writing test (same prompts, blind-rated by a separate model)	Not tested yet. The writing and instruction-following tests need API or paid access we do not have for this product. We have run them on open models only: writing leaderboard, instruction following.	Not tested yet. The writing and instruction-following tests need API or paid access we do not have for this product. We have run them on open models only: writing leaderboard, instruction following.

How we test and label results: methodology. All test logs: test hub.

Grammarly vs Jasper at a glance

Grammarly and Jasper are both listed under Writing. Agentic Weekly's Jasper page names Grammarly as an alternative. Grammarly: AI writing assistant that works across apps; Free $0, Pro $12 per month, Enterprise custom. Jasper: AI platform for marketing teams with brand governance and AI visibility tracking; 7-day free trial.

Grammarly and Jasper side by side (vendor pages and GitHub, 2026-10-25)
Feature	Grammarly	Jasper
Vendor	Grammarly	Jasper
Listed under	Writing	Writing
License	Proprietary	Proprietary
Pricing model	Freemium	Free trial
Free tier	Free: $0 per month, 100 prompts per month	7-day free trial
Paid plans	Pro $12 per month as listed; 2,000 prompts per member per month; Enterprise custom	Not captured
Platforms	Browser, desktop, and apps (per site)	Web
Evidence	Reported from vendor pages	Reported from vendor pages

How Grammarly and Jasper differ

Pricing model: Grammarly is "Freemium"; Jasper is "Free trial".
Free tier: Grammarly: $0 per month, 100 prompts per month. Jasper: 7-day free trial.
Platforms as the vendors list them: Grammarly: Browser, desktop, and apps (per site). Jasper: Web.

Neither tool publishes open-source code under a standard license, so you are choosing between hosted products.

Which should you pick?

Pick Grammarly if: anyone polishing emails and documents. Skip it if: you want long-form AI drafting only.
Pick Jasper if: marketing teams needing brand control. Skip it if: solo writers on a budget.

Strengths and limits

Strengths and limits as listed on each tool page
Feature	Grammarly	Jasper
Strengths	Free tier; Works in many apps	Brand governance
Limits	Prompt caps by plan	Price not read

What we did not verify

Grammarly: Release date (none published on the pages we read; the date shown is the day we first covered this entry).
Jasper: Release date (none published on the pages we read; the date shown is the day we first covered this entry).
Output quality, speed and reliability beyond the smoke tests listed under What we measured: not compared.

FAQ

Is Grammarly or Jasper open source?

Grammarly: Proprietary. Jasper: Proprietary. Licenses come from each project's GitHub repository or the vendor's own pages, read Oct 25, 2026; read the license text itself before redistributing or building a competing service.

Does Grammarly or Jasper have a free plan?

Grammarly: Free: $0 per month, 100 prompts per month. Jasper: 7-day free trial. Checked Oct 25, 2026; prices and limits change, so confirm on each vendor's page.

What is the main difference between Grammarly and Jasper?

Pricing model: Grammarly is "Freemium"; Jasper is "Free trial". Free tier: Grammarly: $0 per month, 100 prompts per month. Jasper: 7-day free trial.

Sources

Grammarly (fetched 2026-10-25)
Grammarly plans (fetched 2026-10-25)
Jasper (fetched 2026-10-25)

Page history

Oct 25, 2026: First published. Facts read from vendor pages and the GitHub API on 2026-10-25.

Markdown version for agents: /compare/grammarly-vs-jasper.md

Get The Weekly Verdict, free

One email a week. Each release gets one call: update now, worth a look, or skip.
Every claim shows its evidence. Reported means we read the sources; Tested means we ran it, with the exact scope and the failures left in.
A free AI Tools Cheat Sheet (web page and printable PDF) lands in your inbox when you confirm.