Why it matters
- Built by AI21 Labs, a leading NLP research organization — the rewriting quality is contextually sophisticated.
- Rewrites preserve your specific meaning while changing tone, formality, or structure — unlike generic paraphrasers.
- Works natively in Google Docs, Word, Gmail, LinkedIn, and any Chrome text field — minimal workflow disruption.
- Spices, an AI feature that adds examples, statistics, and counter-arguments to your writing, goes beyond simple rewriting.
Key capabilities
- Sentence rewriting: Get multiple alternative phrasings for any sentence — formal, casual, shortened, or expanded.
- Tone adjustment: Switch between formal and casual registers while keeping the same meaning.
- Shorten and expand: Condense verbose sentences or add detail to thin ones with one click.
- Spices: AI suggestions for adding examples, analogies, statistics, jokes, or counter-arguments mid-text.
- Ai continuation: Continue writing with AI suggestions from where you left off.
- Rewrite paragraphs: Rewrite entire paragraphs, not just individual sentences, for broader structural improvement.
- Chrome extension: Works across all websites — Google Docs, Gmail, LinkedIn, Slack, and more.
- Microsoft Word add-in: Available for native integration with Word on Windows and Mac.
Technical notes
- Powered by: AI21 Labs' proprietary language models (Jurassic series and newer)
- Platforms: Chrome extension, web app at wordtune.com, Google Docs, Microsoft Word add-in
- Languages: English (primary); Spanish, French, German, Portuguese, Hebrew with variable quality
- Pricing: Free (10 rewrites/day); Advanced ~$10/mo or ~$7/mo annual; Teams custom pricing
- Privacy: Business/Teams plans offer data processing agreements; free tier may use data for model training
- Founded: 2020 by AI21 Labs; headquartered in Tel Aviv, Israel
Ideal for
- Professionals and executives who write in English as a second language and want native-sounding prose.
- Business communicators who need to shift a message between formal (executive email) and casual (Slack) registers quickly.
- Content writers who want to vary sentence structure and avoid repetitive phrasing in long-form content.
Not ideal for
- Full article generation from scratch — Wordtune edits and rewrites existing text, it doesn't generate new long-form content.
- Real-time error detection while typing — Grammarly's inline suggestions are better for that workflow.
- High-volume paraphrasing of large documents — QuillBot handles bulk rewriting more efficiently.