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Head-to-Head Comparison
Grammarly vs Jasper
An honest, side-by-side breakdown of pricing, features, and security — so you can pick the right tool.
Published Last updated
- Grammarly starts at £10/mo and Jasper at US$69/mo — published in different currencies, so not a like-for-like figure.
- On privacy, Jasper offers GDPR compliance where Grammarly does not.
- Grammarly is best for teams building AI writing into their products; Jasper for teams building AI writing into their products.
G
Grammarly
AI Writing
8.1/ 10
Free · Free tier
Best for teams building AI writing into their products
Visit GrammarlySee all AI Writing Tools →
Jasper
AI Writing
7.4/ 10
US$69/mo · Paid only
Best for teams building AI writing into their products
Visit JasperSee all AI Writing Tools →Some “Visit” links are affiliate links. How we earn →
Feature comparison
| Feature | Grammarly | Jasper |
|---|---|---|
| CompareMyAI score | 8.1 / 10 | 7.4 / 10 |
| Free tier | ||
| API access | ||
| Open source | ||
| Enterprise ready | ||
| GDPR compliant | ||
| Vendor holds SOC 2 | ||
| Vendor holds ISO 27001 | ||
| MFA supported | ||
| Trains on your data | Yes |
Certifications may only cover business or enterprise plans. Check the vendor’s trust page for your plan.
Grammarly comes out ahead — and you can try it free.
Try Grammarly freeAffiliate link · how we earn
Pricing
Price checked with vendor on
G
ProUS$69/mo ≈£51.86/mo
Business—
Always check the provider's site for the latest pricing.
Pros & cons
Grammarly
Pros
- +SOC 2 Type II and ISO 27001 certified — strongest compliance in the writing category
- +Works across browser, desktop, Word, Google Docs, and email with one install
- +Pro tier confirmed at £10/mo in GBP — transparent UK pricing
- +Explicit opt-out from AI model training available in account settings
Cons
- −Trains on user writing by default — opt-out required
- −GDPR compliance not explicitly confirmed on accessed official pages
- −Free AI prompt limit (100/mo) may feel restrictive for daily users
Jasper
Pros
- +Purpose-built for marketing copy
- +Strong brand voice training
- +Large template library
- +Good team collaboration features
- +SOC2 certified
Cons
- −Expensive compared to general AI tools
- −Output needs editing
- −Limited value outside marketing use cases
Our take— Grammarly wins
Based on our comparison of published pricing, features, and compliance data, Grammarly scores 8.1/10 to Jasper's 7.4/10. Grammarly pulls ahead with a free tier. Jasper counters with GDPR compliance. Pick Grammarly if you need a free tier; pick Jasper if GDPR compliance matters.
Frequently asked questions
Does Grammarly train on your data?
Based on published vendor information, Grammarly may use your data to help train its models. Training is sometimes opt-out, or switched off on paid and business plans, so review the privacy settings in your account.
Does Jasper train on your data?
Based on published vendor information, Jasper does not train its models on your data. Policies can differ by plan and change over time, so it is worth confirming the current terms on the vendor's site.
Are Grammarly and Jasper GDPR compliant?
Jasper states it is GDPR compliant, while Grammarly is not recorded as GDPR compliant in our data. Confirm the current position with each vendor if GDPR compliance is important for your use.
Do Grammarly and Jasper have a free tier?
Grammarly offers a free tier, while Jasper is paid only. If you want to try before paying, Grammarly is the one to start with.
Which has an API, Grammarly or Jasper?
Both Grammarly and Jasper offer API access, so developers can build either into their own products and workflows.