AI paraphraser, grammar checker, summarizer and AI detector popular with students and writers.
Grammarly vs Jasper
Features, pricing, strengths and trade-offs — and which one fits your situation.
The verdict
Summary
Grammarly is best for catching errors and polishing tone in everyday writing across the apps you already use, while Jasper is best for marketing teams producing on-brand campaign content with governance at scale. Grammarly has a low learning curve, compared with medium for Jasper. Grammarly has a free plan, while Jasper offers a free trial.
Which should you choose?
Choose Grammarly if…
- You need catching errors and polishing tone in everyday writing across the apps you already use
- You're one of: professionals writing emails and documents, students, non-native english writers
- You want a free plan (Jasper only has a trial)
- You want something quicker to learn
Choose Jasper if…
- You need marketing teams producing on-brand campaign content with governance at scale
- You're one of: in-house marketing teams, agencies, enterprise content teams
- Strong brand governance controls across teams
At a glance
| Grammarly | Jasper | |
|---|---|---|
| Best for | Catching errors and polishing tone in everyday writing across the apps you already use | Marketing teams producing on-brand campaign content with governance at scale |
| Free plan | Yes | Trial only |
| Starting price | From $12/mo | From $69/mo |
| Learning curve | Low | Medium |
| Platforms | Web, Windows, macOS, iOS, Android, Chrome extension | Web, Chrome extension, API |
| Ideal for | Professionals writing emails and documents, Students, Non-native English writers, Business and support teams | In-house marketing teams, Agencies, Enterprise content teams |
Feature comparison
| Grammarly | Jasper | |
|---|---|---|
| Grammar & style checking | Yes | Limited |
| Paraphrasing / rewriting | Paid plans only | Yes |
| Long-form drafting | Limited | Yes |
| Brand voice / style guide | Paid plans only | Yes |
| Plagiarism checker | Paid plans only | Paid add-on |
| AI content detection | Paid plans only | — |
| Works in browser / other apps | Yes | Chrome and Edge |
| Languages | English + 5 (translation 19) | 30 |
| Team workspace | Yes | Yes |
IncludedLimited / higher plansNot available— Not confirmed
Security & enterprise
| Grammarly | Jasper | |
|---|---|---|
| Business / enterprise plan | Yes | Yes |
| SSO (SAML / OIDC) | Enterprise plan | Business plan |
| SCIM user provisioning | — | Business plan |
| SOC 2 | Type II | Type II |
| ISO 27001 | Yes | — |
| HIPAA (BAA available) | Enterprise (BAA) | — |
| GDPR DPA | Yes | Yes |
| Data residency options | — | No |
| No training on your data | — | Yes |
| Audit logs | — | — |
| Admin controls | Yes | Yes |
| Deployment | Cloud | Cloud |
From each vendor's security documentation. "—" = not confirmed. What to ask vendors · Compare all tools
What each tool does
Grammarly
Grammarly is an AI writing assistant that checks grammar, spelling, clarity and tone as you type in browsers, desktop apps, Microsoft Office, Google Docs and mobile keyboards. It also generates and rewrites text, and paid plans add plagiarism and AI-content detection, style guides and brand tones. Its parent company rebranded as Superhuman in 2025, but Grammarly continues as the writing assistant product.
Key features- Real-time grammar, spelling, clarity and tone suggestions
- Full-sentence rewrites and generative AI prompts
- Plagiarism and AI-content detection (paid)
- Style guides and brand tones for teams
- Grammar checks in five languages beyond English, translation into 19
- Works in browsers, desktop apps, Office, Google Docs and mobile
Jasper
Jasper is an AI marketing content platform that applies brand voice, style guides, audience profiles and product knowledge (Jasper IQ) to everything it generates. It offers 100+ marketing agents, a Canvas workspace, Grid for scaling content, Jasper Chat, image generation, and AI Studio for building custom agents and workflows. It is used mainly by in-house marketing teams and agencies at mid-size and large companies.
Key features- Brand IQ for brand voice, style guides and audience profiles
- 100+ marketing agents for SEO, campaigns and personalization
- Canvas workspace and Grid for content at scale
- Jasper Chat and on-brand image generation
- AI Studio for custom agents and workflows
- Chrome and Edge extension
Pricing
Grammarly
Free plan. Pro ~$12/mo billed annually or ~$30 monthly. Enterprise custom.
Jasper
Free plan: no (7-day free trial); Pro ~$69/mo ($59/mo annual), Business custom
Prices last checked September 2026. Plans change often — confirm on each vendor's site.
Pros and cons
Grammarly
Strengths- Works almost everywhere you type, including a mobile keyboard
- Clear, easy-to-accept suggestions with little setup
- Team features include style guides, snippets and analytics
- Has a useful free plan
- Rewrites, tone adjustment, plagiarism and AI detection require a paid plan
- Generative AI prompts are capped per month except on Enterprise
- Less depth for fiction and long manuscripts than specialist editors
- Full-sentence grammar support outside English covers only five languages
Not ideal for: Novelists wanting in-depth manuscript analysis, or marketers who need long-form content generated at scale, should look at specialist tools.
Jasper
Strengths- Strong brand governance controls across teams
- Broad set of marketing-specific agents and templates
- Writes in around 30 languages
- API and custom workflow builder for larger teams
- No free plan, only a short trial
- Plagiarism checks cost extra as a pay-per-use add-on
- Extension supports Chrome and Edge only
- Priced for teams; expensive for solo writers
Not ideal for: Solo writers who mainly need proofreading or occasional copy will find it expensive and more complex than necessary.
Integrations
Grammarly
Jasper
FAQ
What is the main difference between Grammarly and Jasper?
Grammarly is built for catching errors and polishing tone in everyday writing across the apps you already use; Jasper is built for marketing teams producing on-brand campaign content with governance at scale.
Is Grammarly or Jasper cheaper?
Grammarly starts from $12/mo and Jasper starts from $69/mo (as of September 2026). On entry price, Grammarly is cheaper — but compare what each plan includes, since limits differ. Always confirm current pricing on each vendor's site.
Do Grammarly and Jasper have free plans?
Grammarly has a free plan, while Jasper offers a free trial.
Which is easier to use, Grammarly or Jasper?
Grammarly is generally quicker to learn (Grammarly: low, Jasper: medium learning curve).
What are good alternatives to Grammarly and Jasper?
Other writing tools worth comparing include QuillBot, Writesonic and Koala AI.
