Wordtune is the sharpest AI rewriting tool on the market, and it's deliberately narrow. Highlight any sentence and it hands you several natural rephrasings — casual, formal, shorter, longer — instead of a single "correct" version. Built by AI21 Labs, it runs as a browser extension and inside Microsoft Word, starts at $6.99/month billed annually, and carries a free tier. It's not a full writing suite, and that focus is both its strength and its ceiling.
Rating: 4.2/5
Verdict: Wordtune is the best tool for rephrasing and tone, and a genuine unlock for non-native English writers. It's a scalpel, not a Swiss Army knife — there's no plagiarism checker or heavy grammar engine, so pair it with a broader editor if you need those.
Best for: non-native English speakers, students, and anyone who edits and polishes more than they draft from scratch.
What is Wordtune?
Wordtune is an AI writing assistant that specializes in rewriting rather than generating. Where a tool like Jasper drafts long-form content for you, Wordtune takes what you've already written and shows you better ways to say it. That distinction is the whole product: it's an editor's assistant, not a ghostwriter.
It lives as a Chrome extension that works across Gmail, Google Docs, LinkedIn, X and most text fields, plus a native Microsoft Word add-in and a standalone editor. For where it sits against the broader field, see our best AI writing tools roundup.
Key features
Wordtune's feature set is small and tightly built around rewriting and comprehension.
Rewrite & rephrase
The core feature. Highlight a sentence and Wordtune returns multiple alternative phrasings instantly, each preserving your meaning. It's more varied and context-aware than the single-suggestion rewrites you get elsewhere — you're choosing from options, not accepting one edit.
Tone & length controls
Toggle any rewrite toward casual or formal, or ask for a shorter or longer version. This is where Wordtune is genuinely best-in-class: it softens tone, tightens wording or expands a thin sentence without you rewriting it by hand.
Spices & summarizer
"Spices" are AI prompts that add a specific ingredient to your text — a statistic, an example, an analogy, a counterargument or a joke — useful when a paragraph feels flat. The summarizer (Wordtune Read) condenses articles, PDFs and even YouTube videos into key points, which is handy for research even if it's a secondary feature.
The non-native English edge
This is where Wordtune quietly outclasses everything else. If English isn't your first language, the hardest part isn't grammar — it's knowing which of several correct phrasings actually sounds natural. Wordtune surfaces those options side by side, so you pick the one that reads right instead of guessing.
Independent benchmarks back the feel: one test found Wordtune preserved a writer's original intent with roughly 95% accuracy, edging out the more conservative rivals. The trade-off is that its rewrites occasionally drift on precise factual wording (around 93% factual alignment in the same test), so proofread anything where exact numbers or claims matter. For editing and polishing, though, it's the most useful assistant a second-language writer can install.
Wordtune pricing in 2026
Wordtune keeps pricing simple: a free tier plus two paid plans, with steep annual discounts.
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | 10 rewrites/day, 3 AI summaries/month. Enough to test the core rephrasing. |
| Advanced | $6.99/mo annual ($13.99 monthly) | 30 rewrites & AI suggestions per day, 15 summaries/month, tone and length controls. |
| Unlimited | $9.99/mo annual ($19.99 monthly) | Unlimited rewrites, suggestions and summaries, plus vocabulary, clarity and fluency boosts and premium support. |
| Business / Teams | Custom | Everything in Unlimited plus centralized billing, SAML SSO and admin controls. |
The Unlimited plan at $9.99/month annually is the one to get if you write daily — the free tier's 10-rewrite cap runs out fast. Full breakdown in our Wordtune pricing guide.
Pros and cons
Wordtune trades breadth for depth. The ledger after testing:
Pros
- Best rewriter in the category — multiple phrasings per sentence
- Excellent tone and length control
- A genuine unlock for non-native English writers
- Cheaper than most rivals ($9.99/mo Unlimited annually)
- Works everywhere via extension + Word add-in
Cons
- Narrow — not a full writing suite
- No plagiarism or AI-text detection
- Weak grammar engine vs Grammarly
- Free tier's 10-rewrite/day cap is tight
- Not built for long-form drafting
Who Wordtune is for
Install Wordtune if you edit more than you draft. Non-native English writers, students polishing essays, and professionals who want their emails and posts to read cleaner will get daily value from the rephrasing and tone controls. At $9.99/month it's an easy add, and it earns its 4.2/5 on the strength of that one job done exceptionally well.
Look elsewhere if you need a single tool that also checks grammar comprehensively, catches plagiarism and drafts long-form. For those, read our Wordtune vs Grammarly comparison — Grammarly covers the broader editing job — or the Grammarly review. Try Wordtune at wordtune.com.
Frequently Asked Questions
What is Wordtune?
Wordtune is an AI writing assistant from AI21 Labs focused on rewriting. Highlight any sentence and it offers multiple rephrasings — casual, formal, shorter or longer — plus a summarizer and AI 'spices' that add facts, examples or analogies. It runs as a browser extension and works across the web and Microsoft Word.
How much does Wordtune cost?
There's a free plan with 10 rewrites a day. Advanced is $13.99/month ($6.99 billed annually) and Unlimited is $19.99/month ($9.99 annually) with limitless rewrites, suggestions and summaries. A Business/Teams plan adds SSO and admin controls.
Is Wordtune good for non-native English speakers?
It's one of the best tools for it. Because Wordtune shows several natural phrasings of any sentence you write, non-native writers can pick the one that sounds right rather than guessing — a benchmark found it preserved the writer's original intent with about 95% accuracy.
Wordtune vs Grammarly — which is better?
Wordtune is the better rewriter and tone tool; Grammarly is the better all-round editor for grammar, spelling, plagiarism and whole-document checks. Choose Wordtune to rephrase and vary tone, choose Grammarly for comprehensive correctness — many writers run both.
Does Wordtune have a free plan?
Yes. The free plan gives you 10 rewrites per day and 3 AI summaries per month. It's enough to test the core rephrasing feature, but the daily cap is tight for anyone who writes for a living.
Is Wordtune worth it?
For rewriting, tone control and non-native English polishing, yes — and at $9.99/month annually for Unlimited it's cheaper than most rivals. It's not a full writing suite, though: there's no plagiarism checker or strong grammar engine, so heavy editors may still want Grammarly alongside it.