Grammarly
by Superhuman (formerly Grammarly Inc.)
Keep the free version on, always. Only pay for full rewrites or plagiarism checks, and pay yearly.
- Free plan
- Grammar, spelling and tone checks plus 100 AI prompts a month
- Paid plans
- From $30/mo. Pro plan, billed monthly ($12/mo billed yearly)
- Best for
- Anyone who wants cleaner writing everywhere they type
- Prices checked
- Sep 30, 2026. Official pricing
Good
- Works in your browser, Docs, Office, Mac, Windows and phones
- Free plan catches grammar, spelling and tone
- Pro adds rewrites, plagiarism and AI-text detection
Watch out
- Monthly billing is $30, versus $12/mo yearly
- Free plan has no full-sentence rewrites
Where it ranks
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