Last updated: 2026-07-01
Wordtune is an AI sentence rewriter and writing assistant made by AI21 Labs (founded 2017, $636M raised). Used by 10 million+ writers globally, it rewrites sentences for clarity, tone, and length. Free plan offers 10 rewrites per day; Unlimited costs $6.99/month (annual) for unlimited rewrites. Works in Google Docs, Gmail, Outlook, LinkedIn, and Microsoft Word. Rated 4.6/5 on G2 from 196 reviews.
About Wordtune
Wordtune is an AI writing assistant developed by AI21 Labs, founded in 2017 in Tel Aviv by Yoav Shoham, Ori Goshen, and Amnon Shashua. Launched in October 2020, the tool has grown to serve 10 million+ writers globally. AI21 Labs has raised $636M in total funding, including a $300M Series D in May 2025 at a $1.4B+ valuation, making Wordtune one of the best-resourced writing assistant products in the market. Wordtune focuses on sentence-level rewriting rather than full-document generation. Its core workflow is simple: highlight a sentence, and Wordtune offers multiple alternative phrasings with tone and length controls. Casual mode makes writing more conversational; Formal mode adds professional polish. Shorten removes filler words and tightens wording; Expand adds detail and context. Spices (version 2.0) acts as a co-writer, generating analogies, statistical context, counter-arguments, or historical examples to enrich a paragraph with a single click. A grammar and spelling checker runs automatically on all plans. Wordtune delivers through a Chrome extension that integrates with Google Docs, Gmail, LinkedIn, Outlook, WordPress, and any other browser text field without switching tools. A free Microsoft Word add-in extends the same capabilities to desktop Office users. The platform works best for professionals who want to improve and refine existing writing rather than generate content from scratch — non-native English speakers calibrating formality, business communicators polishing client emails, and marketers tightening copy all cite Wordtune as a daily workflow tool. Pricing is accessible: a free plan with 10 rewrites per day, Advanced at $4.89/month (annual) for 30 rewrites and 15 summaries per day, and Unlimited at $6.99/month (annual) for unlimited everything with premium support. A Teams tier at $7.99/seat/month (annual) adds centralized billing and enterprise support for larger groups. Annual billing saves up to 50% versus monthly rates. A 3-day free trial covers the Advanced and Unlimited plans. User feedback consistently praises the Chrome extension's ease of use and the quality of sentence rewrites for business communication. Common criticisms center on the restrictive free-tier daily limits and subscription management issues reported on Trustpilot (unauthorized renewals and difficult cancellation). G2 rating: 4.6/5 from 196 verified reviews.
Pricing
Free: 10 rewrites/day, 3 summaries/month. Advanced: $6.99/month (monthly) or $4.89/month (annual) — 30 rewrites/day, 15 summaries/month. Unlimited: $9.99/month (monthly) or $6.99/month (annual, recommended) — unlimited rewrites and summaries, vocabulary enhancements, priority support. Teams: $15.99/seat/month (monthly) or $7.99/seat/month (annual) — centralized billing, enterprise support. Annual billing saves up to 50%. 3-day free trial on Advanced and Unlimited. Student/educator: 30% off with .edu email.
Key Features
- Real-Time Sentence Rewriting: Highlights trigger instant alternative phrasings with tone (Casual/Formal) and length (Shorten/Expand) controls, offering multiple rewrite options per sentence in under a second.
- Spices Co-Writer (v2.0): Adds analogies, statistical facts, counter-arguments, or historical context to enrich paragraphs with a single click, turning sparse drafts into evidence-rich writing.
- Tone and Formality Control: Switches between Casual and Formal registers instantly, making it useful for adapting the same content across internal communications and client-facing documents.
- Google Docs and Gmail Integration: Chrome extension works natively in Google Docs, Gmail, LinkedIn, Outlook, and WordPress — 88% of users rate the integration experience as seamless in user surveys.
- Microsoft Word Add-In: Free Word add-in brings Wordtune's rewriting and clarity features into desktop Microsoft Office without requiring the Chrome browser.
- Grammar and Spelling Checker: Automatic grammar and spelling corrections run on all plans including Free, catching errors as you write without disrupting the rewriting workflow.
Pros
- Unlimited rewrites at $6.99/month (annual) is one of the lowest price points for a writing assistant used by 10M+ professional writers
- Sentence-level tone control (Casual/Formal, Shorten/Expand) is precise and fast — most users report 2-3 rewrite options taking under 1 second to generate
- Free Microsoft Word add-in and Chrome extension cover nearly every writing surface professionals use daily (Gmail, Docs, LinkedIn, Outlook, Word)
- AI21 Labs' $636M funding provides long-term product stability compared to bootstrapped writing assistant alternatives
- Spices 2.0 adds evidence-backed content enrichment (statistics, analogies, counter-arguments) that Grammarly and Rytr do not offer
Cons
- Free plan's 10-rewrites-per-day limit is exhausted within a single active editing session, creating immediate upgrade pressure
- Primarily optimized for English — non-English language support exists but quality is noticeably weaker for non-European languages
- Subscription management issues flagged on Trustpilot (4.1/5): unauthorized renewals and difficult cancellation process reported by multiple users
- Lacks SERP data, content score, or SEO optimization — writing improvement only, with no visibility or ranking guidance
- Sentence-level focus means poor performance for long-form structural editing: reorganizing entire sections still requires manual work
Frequently Asked Questions
What is Wordtune and how does it work?
Wordtune is an AI writing assistant developed by AI21 Labs, founded in 2017 in Tel Aviv by Yoav Shoham, Ori Goshen, and Amnon Shashua. Launched in October 2020, it serves 10 million+ writers globally. It rewrites sentences in real-time at the sentence and paragraph level, offering tone controls (Casual and Formal), length adjustments (Shorten and Expand), and AI-generated suggestions for vocabulary and clarity. Unlike full-document AI generators, Wordtune works alongside your own writing rather than replacing it, making it better suited for editing and refinement than drafting from scratch. It runs as a Chrome extension that integrates with Google Docs, Gmail, LinkedIn, and any text field.
How much does Wordtune cost in 2026?
Wordtune has four plans in 2026. The Free plan is $0 and includes 10 rewrites and AI suggestions per day and 3 AI summaries per month. The Advanced plan costs $6.99/month (billed monthly) or $4.89/month billed annually, offering 30 rewrites and suggestions per day and 15 summaries per month. The Unlimited plan costs $9.99/month (billed monthly) or $6.99/month billed annually (marked as recommended), providing unlimited rewrites, summaries, vocabulary enhancements, clarity improvements, and premium support. The Teams plan costs $15.99/seat/month (billed monthly) or $7.99/seat/month annually, adding centralized billing and enterprise support. Annual billing saves up to 50% across all paid tiers. A 3-day free trial is available for the Advanced and Unlimited plans.
What are the main features of Wordtune?
Wordtune's core features center on sentence-level rewriting with tone and length controls. The Casual and Formal tone modes shift register instantly — useful for adapting internal drafts to client-facing communications. Shorten removes filler words and tightens sentences; Expand adds context and detail. Spices (version 2.0) adds analogies, statistical facts, counter-arguments, or historical context to enrich paragraphs as you write. A grammar and spelling checker runs on all plans including free. Vocabulary enhancements and clarity improvements are available on the Unlimited tier. The Chrome extension brings all features into Google Docs, Gmail, Outlook, LinkedIn, Microsoft Word (as an add-in), and most browser text fields.
Is Wordtune free to use?
Yes, Wordtune has a permanent free plan that provides 10 rewrites and AI suggestions per day and 3 AI summaries per month, with unlimited spelling and grammar checks. For regular writers, the free tier is sufficient for occasional sentence polishing but depletes quickly during active editing sessions. The Unlimited plan at $6.99/month (annual) removes all daily limits and adds vocabulary enhancements and priority support. A 3-day free trial is available for the Advanced and Unlimited plans, and students or educators with a .edu email address receive 30% off every month.
Who is Wordtune best for?
Wordtune is best for professionals who write regularly in English and need fast sentence-level refinement: business communicators drafting emails and reports, non-native English speakers who need clarity and tone calibration, marketing and communications teams polishing client-facing copy, and academics editing drafts for formal submission. It is not ideal for teams producing long-form SEO content (it lacks SERP data), multilingual writers (primarily optimized for English), or developers and teams who need full document generation from scratch. Wordtune works best as a co-pilot alongside your own writing, not as a content factory.
What are the best alternatives to Wordtune?
The main alternatives to Wordtune in 2026 are Grammarly, HyperWrite, and Quillbot. Grammarly is the strongest competitor for comprehensive document-level checking, adding plagiarism detection, full tone scoring, and style consistency that Wordtune lacks. QuillBot is cheaper and focuses on paraphrasing whole paragraphs, with a free tier that's less restrictive than Wordtune's 10-rewrites-per-day limit. HyperWrite combines sentence suggestions with a browser automation agent. Rytr and Jasper are better for generating new content from scratch rather than editing what you've already written. Wordtune stands out specifically for real-time sentence-level rewriting with precise tone control.
Does Wordtune have a Chrome extension and what apps does it work in?
Yes, Wordtune's Chrome extension is the primary delivery mechanism and works inside any browser text field. Native integrations include Google Docs, Gmail, LinkedIn, Outlook (web), and WordPress. Wordtune also offers a free Microsoft Word add-in for desktop editing. The extension activates contextually when you highlight text, offering rewrite suggestions as an overlay without switching to a separate app. For heavy Microsoft 365 users, the Word add-in provides the same core Wordtune features inside the desktop Word application. There is no native MCP server or Zapier integration as of 2026.
How does Wordtune compare to Grammarly in 2026?
Wordtune and Grammarly serve related but distinct needs. Grammarly is stronger for comprehensive document review: it checks grammar, spelling, punctuation, clarity, engagement, tone, and plagiarism across an entire document, and its Business plan adds brand guidelines and style enforcement for teams. Wordtune is stronger for real-time creative sentence rewriting, offering Casual/Formal tone shifts and Shorten/Expand tools that Grammarly does not provide. Grammarly's free tier is more generous than Wordtune's 10-rewrites-per-day limit. Wordtune Unlimited at $6.99/month is cheaper than Grammarly Premium at $12/month (annual). For editing correctness: Grammarly. For rewriting and tone creativity: Wordtune.
Top Alternatives
- Grammarly: Pick Grammarly when you need comprehensive grammar checking, plagiarism detection, and tone scoring across the full document.
- HyperWrite: Choose HyperWrite when browser automation and full-sentence prediction matter more than controlled rewrite variations.
- Rytr: Pick Rytr when you need template-based content generation from scratch rather than improving existing sentences.
- Jasper: Choose Jasper when you need long-form content creation with brand voice training, not just sentence-level rewriting.