How much does Grammarly cost?
- Free plan
- Yes
- Free trial
- Pro trial offered ($0 payment today, email reminder 2 days before trial ends); length…
- Enterprise
- Contact sales
In your favor
- Free plan. Free plan with grammar mistake checking, tone view and 100 AI prompts per month
How you buy and get started
- Sign up
- Self-serve signup for Free and Pro "Sign up with Google"
- Setup
- Not stated
- When sales steps in
- Enterprise is contact sales "Contact Sales"
- Support
- Help center on all plans; priority support and dedicated support on higher plans "Dedicated support"
What Grammarly does
Grammarly, now part of Superhuman, offers paragraph rewrites, tone suggestions, proofreading, and AI detector and humanizer agents, with Free, Pro and Enterprise plans. Pro adds style guide, brand tones and plagiarism and AI text detection; Enterprise adds SAML SSO, SCIM, BYOK and unlimited prompts via contact sales.
- Good for
- Individuals, teams and larger organizations that want writing correction, tone and brand-consistency support across their apps.
- Channels
- Desktop, Mobile, Browser extension, MS Office, Google Docs, Web
- Main product
- Grammarly AI writing assistant
- Also includes
- Grammar and proofreading, Tone suggestions, Full-sentence rewrites, Paragraph rewrites, Plagiarism detection, AI-generated text detection
- Connects to
- Zendesk, MS Office, Google Docs
- Public API
- Not stated
- MCP server
- Not stated
- Custom brand voice training
Brand tones | | 1 | Unlimited
- SEO scoring and optimizationNot stated
- Long-form article generationNot stated
- Copywriting templates library
Snippets
- Team workspace and collaboration
Knowledge Share
- CMS publishing integrationsNot stated
- API accessNot stated
- Multilingual content supportNot stated
- Plagiarism and AI detection
Detect plagiarism and AI generated text
- SSO and enterprise security
SAML single sign-on
The same 10 checks appear on every tool in AI writing assistants. Each tick quotes the vendor's own site.
Security and your data
| Question | Their answer | Where it says so |
|---|---|---|
| Trains AI on your data? | no (third-party providers not allowed to train on user content; Superhuman's own | "We do not sell or monetize user content, or provide it for advertising purposes, or allow our third party service providers to train their models on user content."home |
| HIPAA (signs a BAA) | Not stated | |
| SOC 2 | SOC 2 Type 2 | "Grammarly’s SOC 2 (Type 2) report attests to our enterprise-grade system and organization controls regarding security, privacy, availability, and confidentiality."pricing |
| GDPR | Not stated | |
| CCPA | Not stated | |
| PCI | Not stated | |
| ISO 27001 | Not stated | |
| Single sign-on | SAML single sign-on listed in security features | "SAML single sign-on"pricing |
| Trust center | https://www.grammarly.com/trust | "[Trust Center](https://www.grammarly.com/trust)"pricing |
Security answers are the vendor's own claims, quoted. We don't audit them.
Every plan
| Plan | Monthly | Billed yearly | Included | Over the allowance | Where it says so |
|---|---|---|---|---|---|
| Free/ month | $0 | – | 100 AI prompts100 prompts / month | – | "Generate text with AI prompts | 100 prompts / month" |
| Pro/ member / month, billed annually | $30 | $12per month | 2000 AI prompts2,000 prompts / member / month | – | "free $0 usd / month create account pro $12 usd try for free email reminder 2 days before t" "/ member / month, billed annually**$30** when billed monthly" |
| Enterprise | Quote | – | Unlimited | – | "Unlimited prompts / member / month" |
Free plan: Free plan with grammar mistake checking, tone view and 100 AI prompts per month
Grammarly price history
No price changes on Grammarly's pricing page since 2023Q1, across 10 archived reads.
From archived copies of the pricing page in the Internet Archive, one per quarter, in USD.
Fine print
- Billing increment
- Not stated
- Billed beyond usage
- May require purchase of additional generative AI capacity if plan limits exceeded "If you exceed your Subscription Plan’s usage limits, we may require you to purchase additional capacity or units to continue accessing and using the generative AI features of the S"
- Contract
- Not stated
- Refunds
- Additional AI capacity purchases not refunded on expiry or termination "will not be refunded to you upon expiry or termination of your Subscription."
- Auto renew
- Paid subscriptions auto-renew for same duration at then-current fees "SUCH PAID SUBSCRIPTION WILL BE AUTOMATICALLY RENEWED FOR ADDITIONAL PERIODS OF THE SAME DURATION AS YOUR INITIAL SUBSCRIPTION PERIOD AT SUPERHUMAN’S THEN-CURRENT FEES FOR SUCH SUBS"
- Price change notice
- Not stated
"Not stated" means we read their pricing page and terms and they don't say.
About the company
- Legal name
- Superhuman Platform Inc. (formerly Grammarly, Inc.)
- Online since
- Jul 1, 2009 Domain registration date
- Customers
- "Trusted by 50,000 organizations and 40 million people" their claim
Grammarly alternatives
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RightBlogger$49 /moFree plan · checked Oct 29, 2026
TextCortex$23.99 /mochecked Oct 29, 2026
StoryChief$59 /mochecked Oct 29, 2026
Anyword$39 /mochecked Oct 29, 2026
Jasper$59 /mochecked Oct 29, 2026Reviews elsewhere
We link to reviews instead of copying ratings: those sites don't allow reuse, and we don't test products ourselves.
Questions
Is Grammarly free?
Yes. Free plan with grammar mistake checking, tone view and 100 AI prompts per month Paid plans start at $30/month.
How much does Grammarly cost?
Paid plans start at $12 per month billed yearly, or $30 billed monthly.
Does Grammarly train AI on your data?
No (third-party providers not allowed to train on user content; superhuman's own ai training controlled by account setting), according to Grammarly: "We do not sell or monetize user content, or provide it for advertising purposes, or allow our third party service providers to train their m"