AI writing assistant for grammar, clarity, tone and generative rewriting across apps.
Wordtune
AI Writing & CopywritingWordtune, from AI21 Labs, is a writing companion that suggests alternative phrasings for sentences, adjusts tone between casual and formal, shortens or expands text, and checks grammar and spelling. It also summarizes articles, PDFs and YouTube videos. It works mainly through a Chrome extension in tools like Google Docs and Gmail, plus a Word add-in, and is used by professionals, students and non-native English writers.
Pricing
Wordtune pricing
Free plan: yes (limited daily rewrites); Advanced/Unlimited from ~$6.99-9.99/mo billed annually
Last checked September 2026 · Confirm on wordtune.com
Features
What Wordtune does
- Sentence rewrites with multiple alternatives
- Casual/formal tone, shorten and expand controls
- Grammar and spelling corrections
- AI summarizer for articles, PDFs and YouTube videos
- Chrome extension for Google Docs, Gmail and other sites
- Microsoft Word integration
Pros
- Rewrite suggestions keep your meaning while changing wording
- Unlimited grammar and spelling checks on the free plan
- Low-priced paid plans
- Works inside Google Docs, Gmail and Word
Cons
- Free plan limits rewrites per day and summaries per month
- No built-in plagiarism checker
- Not built for generating full long-form articles or campaigns
- No brand voice or style guide controls
Fit
Who Wordtune is for
Look elsewhere if: Marketing teams generating campaigns at scale or writers needing plagiarism checks should choose a platform built for those tasks.
For teams & enterprise
Enterprise readiness
Wordtune for Business is offered by AI21 Labs, which reports a SOC 2 audit; plan-level SSO and admin details are not published.
- Business / enterprise plan
- Yes
- SSO (SAML / OIDC)
- —
- SCIM user provisioning
- —
- SOC 2
- —
- ISO 27001
- —
- HIPAA (BAA available)
- —
- GDPR DPA
- —
- Data residency options
- —
- No training on your data
- —
- Audit logs
- —
- Admin controls
- —
- Deployment
- Cloud
From the vendor's own security documentation. "—" = not confirmed. Verify during your security review. Compare all tools.
| Writing feature checklist | |
|---|---|
| Grammar & style checking | Yes |
| Paraphrasing / rewriting | Yes |
| Long-form drafting | No |
| Brand voice / style guide | No |
| Plagiarism checker | No |
| AI content detection | — |
| Works in browser / other apps | Yes |
| Languages | English |
| Team workspace | — |
Wordtune compared
- Wordtune vs Grammarly
- Wordtune vs QuillBot
- Wordtune vs Writesonic
- Wordtune vs Jasper
- Wordtune vs Koala AI
- Wordtune vs Rytr
- Wordtune vs ProWritingAid
- Wordtune vs Copy.ai
- Wordtune vs Hypotenuse AI
Buying guides
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