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Grammarly vs Jasper: Writing Assistant or Content Platform?
Grammarly is an AI writing assistant that checks grammar, spelling and tone and offers rewrites across apps. Jasper is an AI content platform for marketing teams, built around brand voice controls and multi-model generation, with no free plan.
The short answer
Pick Grammarly if you want grammar fixes, tone suggestions and quick rewrites wherever you write, starting free. Pick Jasper if you run a marketing team producing on-brand content at scale and need shared brand voice and workflows.
Side by sideGrammarly vs Jasper
| Grammarly | Jasper | |
|---|---|---|
| Company | Superhuman (formerly Grammarly, Inc.) | Jasper AI, Inc. |
| Pricing | Freemium | Paid |
| Starts at | $12 USD (Pro) | $59/month billed yearly (Pro; $69 billed monthly) |
| Free tier | Yes | No |
| Platforms | web, windows, macos, ios, android, browser-extension | web, browser-extension |
| Models used | — | — |
| Best for | Anyone writing in English who wants grammar fixes, tone suggestions and quick rewrites across apps. | Marketing teams producing on-brand content at scale with shared brand voice and workflows. |
Facts in this table come from the verified profile of each product.
Key differences
Pro listed at $12 USD; the billing period is not stated on the plans page. Enterprise via Superhuman Go.
Pro at $59/month billed yearly or $69 billed monthly, per seat. Business pricing is custom.
Spelling and grammar corrections, tone detection and 100 AI prompts per month.
No free plan; only a 7-day trial.
Grammar fixes, tone suggestions and quick rewrites for anyone writing in English.
On-brand marketing content at scale with shared brand voice and workflows.
Full-sentence rewrites, tone adjustment, plagiarism and AI-text detection on Pro, with 2,000 AI prompts.
Brand voice and style controls, generation with several large language models, and agents and automation.
Web, Windows, macOS, iOS, Android and a browser extension.
Web and a browser extension.
Free plan capped at 100 AI prompts per month; advanced rewrites and tone changes require Pro.
Business plan needs a 12-month commitment; the models used are not named.
Choose Grammarly if…
- You want grammar and spelling checks across your browser and desktop apps.
- You want to start on a free plan.
- You need plagiarism and AI-text detection.
- You write alone rather than as part of a marketing team.
Choose Jasper if…
- You run a marketing team that needs a shared brand voice.
- You produce marketing content at scale and need workflows.
- You want style controls applied across a whole team.
- You need a Business plan with custom terms for a larger team.
Frequently asked questions
Does Jasper have a free plan like Grammarly?
No. Jasper offers only a 7-day trial, then Pro at $59/month billed yearly or $69 billed monthly. Grammarly has a free plan with spelling and grammar corrections, tone detection and 100 AI prompts per month, and Pro includes a 7-day free trial.
How much does Grammarly Pro cost compared with Jasper Pro?
Grammarly's plans page lists Pro at $12 USD without stating the billing period. Jasper Pro is $59/month billed yearly or $69 billed monthly, per seat. Jasper's Business plan has custom pricing and a 12-month commitment.
Can Grammarly replace Jasper for marketing content?
They target different jobs. Grammarly focuses on correcting and rewriting your own text, with tone help, across many apps. Jasper is built for marketing teams, with brand voice and style controls and shared workflows for producing content at scale.
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