What is Grammarly

Grammarly is an AI writing and communication platform for correcting, rewriting, adapting tone, checking originality, and applying organisational style guidance across common workplace apps.

Core offerings

  • Grammar, spelling, tone, fluency, rewriting, citation, and inclusive-language assistance.
  • Generative AI prompts plus plagiarism and AI-generated-text detection.
  • Team style guides, brand tones, snippets, Knowledge Share, and analytics.
  • Enterprise administration, data controls, SSO, SCIM, and dedicated support.

Pricing

As of July 22, 2026, Grammarly’s official pricing and billing documentation lists Free at US$0, Pro at US$30 per member per month, US$60 per member every three months, or US$144 per member per year (an average of US$12 per month), and Enterprise at custom pricing.

Free includes core writing checks, tone visibility, and 100 AI prompts per month. Pro adds full-sentence rewrites, tone adjustment, English fluency assistance, unlimited personalised suggestions, plagiarism and AI-text detection, and 2,000 AI prompts per member per month. It also includes team features such as one style guide, one brand tone, snippets, Knowledge Share, and analytics.

Enterprise includes unlimited AI prompts per member, unlimited style guides, brand tones, and user groups, plus SAML SSO, SCIM, custom roles, managed mode, domain controls, data-loss prevention, audit-log API access, bring-your-own-key encryption, dedicated support, and cost-centre visibility.

Model footprint

Grammarly sells an end-user communication layer rather than named model access. Its relevant limits are prompt allowances, writing and originality features, team governance, and where the assistant works across a user’s applications.

Why select Grammarly

Grammarly is a strong fit for individuals and organisations that want writing support across many applications with clearer brand and security controls than a general chat tool. Annual Pro is materially cheaper than month-to-month billing.

Official sources: Grammarly plans, Grammarly Pro billing, Grammarly Pro guide.