Wordtune
FreemiumAI writing companion by AI21 Labs that rewrites and improves sentences while preserving your original voice.
What is Wordtune?
Wordtune, built by Israeli AI research lab AI21 Labs, takes a narrower approach than most writing assistants: instead of generating content from scratch it rewrites sentences you have already written, offering multiple phrasings that preserve your meaning while shifting tone, length or formality. It is particularly effective for non-native English speakers because it infers intent from awkward phrasing. Spices add analogies, counterarguments or statistics, and Wordtune Read summarises long documents. Two things to factor in. The free plan is capped at around 10 rewrites a day, which does not cover a single article, so regular use effectively requires a paid plan starting near $6.99 a month billed annually. And AI21 Labs publicly reduced investment in Wordtune during 2025 to focus on enterprise AI agents: the product is maintained and still works, but feature development has slowed relative to competitors.
Key Features
How to Use Wordtune
✅ Best For
- Professionals who write high volumes of emails and reports and want real-time suggestions to improve phrasing and tone without interrupting their flow in Gmail or Google Docs
- ESL writers and non-native English speakers who want AI assistance finding the most natural-sounding way to express an idea without completely changing the meaning
- Content creators who read many industry articles and want the AI summarizer to condense key points from long reads or YouTube videos into quick bullet summaries
❌ Not For
- Users who need a full AI writing generator for long-form blog posts or marketing copy from scratch, as Wordtune is an editing and refinement tool that works best on existing text
- Fiction writers who need deep narrative assistance with plot development and character voice, since Wordtune focuses on sentence-level improvements
- Users needing extensive daily rewrites on the free plan, since it limits to only 10 rewrites per day
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Pricing
- ✓10 rewrites/day
- ✓3 summarizations/month
- ✓basic grammar
- ✓30 rewrites/day
- ✓15 summarizations
- ✓AI recommendations
- ✓Unlimited rewrites and summarizations
- ✓all features
Prompts to Try
Rewrite this sentence to sound more formal
Make this email introduction more concise
Expand this bullet point into a full paragraph
Summarize this 3000-word article into 5 key points
Rephrase this feedback to sound more diplomatic
Make this LinkedIn headline more engaging