Wordtune
AI-powered rewriting and editing tool from AI21 Labs that improves clarity, tone, and style with one-click sentence rewrites.
Updated 2026-04-30
Overview
Wordtune is a rewriting-first AI writing tool built by AI21 Labs, the company behind the Jamba foundation models. Rather than generating content from scratch, Wordtune focuses on taking your existing text and making it clearer, more concise, or better suited to a specific tone — casual, formal, shortened, or expanded. You highlight a sentence, pick a mode, and get multiple alternative phrasings instantly.
The tool works as a browser extension and an in-app editor, integrating into workflows where you're already writing — Gmail, Google Docs, LinkedIn, Slack, and more. Its Summarize feature can condense long articles, PDFs, and YouTube videos into digestible key points, which makes it useful beyond just rewriting.
Wordtune occupies a different niche from Grammarly (which leads with grammar correction) and Jasper (which leads with content generation). If your writing is already solid but needs polishing — tighter phrasing, better flow, or a different register — Wordtune is purpose-built for that. The free tier is functional but limited in daily rewrites, pushing regular users toward Plus.
What sets Wordtune apart
- Multiple alternative phrasings offered per highlighted sentence
- Summarize condenses articles, PDFs, and YouTube videos into key points
- Browser extension works inline in Gmail, Docs, and Slack
- Built by AI21 Labs on proprietary paraphrasing models
Key features
Rewrite
Get multiple alternative phrasings for any sentence. Choose between casual, formal, shortened, and expanded modes to match your intent.
Tone Adjustment
Shift text between registers — make formal writing more conversational, or casual notes more professional — while preserving your original meaning.
Summarize
Condense long articles, documents, PDFs, and YouTube videos into key points. Works on web pages directly via the browser extension.
Browser Extension
Chrome and Edge extension that works inline across Gmail, Google Docs, LinkedIn, Slack, and most web-based text fields.
Pricing
Free tier: Limited daily rewrites with basic tone options and browser extension access
| Plan | Price | What's included |
|---|---|---|
| Free | Free | Limited rewrites per day, basic tone options, browser extension |
| Plus | $13.99/mo | Unlimited rewrites, all tone modes, summaries, priority support |
| Business | Custom | Team management, brand voice settings, admin controls, priority support |
Limited rewrites per day, basic tone options, browser extension
Unlimited rewrites, all tone modes, summaries, priority support
Team management, brand voice settings, admin controls, priority support
Pros & cons
Pros
- ✓Sentence-level rewriting with multiple alternatives per highlight
- ✓Summarize feature handles articles, PDFs, and YouTube videos
- ✓Browser extension integrates directly into Gmail, Docs, and Slack
- ✓Backed by AI21 Labs with proprietary language models tuned for paraphrasing
Cons
- ×Free tier daily rewrite limit is restrictive for heavy users
- ×Weaker at generating content from scratch compared to Jasper or Copy.ai
- ×No Firefox or Safari extension — Chrome and Edge only
- ×Summarize and advanced features locked behind Plus plan
How it compares
| Tool | Best for | Pricing | Score |
|---|---|---|---|
| Wordtune | Writers who already have a draft and want sentence-level rewrites, tone changes, and clearer phrasing rather than content generated from scratch. | Free / $13.99/mo Plus | 7.8/10 |
| Grammarly | Writers and teams who want real-time grammar checking, tone adjustment, and AI rewriting across every site and app via a browser extension. | Freemium | 9/10 |
| DeepL vs DeepL → | Businesses and individuals translating text and documents across European languages who need natural phrasing and consistent brand terminology. | Freemium — Free tier + Starter €8.74/mo | 9/10 |
| Writer | Enterprise content and marketing teams needing on-brand, compliance-governed content plus no-code AI agent workflows. | From $18/user/mo, Enterprise custom | 8.7/10 |
Compare head-to-head
Comparison explorer Put Wordtune up against any three tools Opens with Wordtune already loaded. Add up to three more from the full index and read pricing, features, pros and cons in one table. →Related reading
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