Wordtune
AI-powered rewriting and editing tool from AI21 Labs that improves clarity, tone, and style with one-click sentence rewrites.
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.
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
- ✓Best-in-class 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