AI21 Labs’ voice-preserving writing tool. Rewrites existing text for clarity, tone, and flow across Casual, Formal, Shorten, Expand, and tone-variation modes. Spices insert examples, counterarguments, statistics, and analogies inline.
Runs through a web app and browser extension that works inside Google Docs, Gmail, LinkedIn, X, and most browser-based editors. Built on AI21’s proprietary Jurassic language models with fiction-independent training focused on natural rewrites.
System Verdict
Pick Wordtune if the goal is improving sentences you have already written without losing your voice. The rewrite output stays closer to source intent than QuillBot’s mode-heavy paraphrases.
Skip it for drafting, SEO volume, or grammar work. Wordtune cannot generate from a blank prompt. Claude and ChatGPT outdraft it. Grammarly outchecks it on grammar and spelling for less money.
Who pays which tier: Free for occasional edits (10 rewrites and 3 summaries per month), Advanced $4.89/mo annual for daily individual writers who want 30 rewrites a day plus 15 summaries a month, Unlimited $6.99/mo annual for heavy daily use that needs the caps removed. The high-end Plus and dedicated Teams SKUs were retired in May 2026.
Key Facts
| Parent company | AI21 Labs (Tel Aviv, founded 2017 by Yoav Shoham, Amnon Shashua, Ori Goshen) |
| Model backbone | AI21 Jurassic family with proprietary rewrite fine-tuning |
| Rewrite modes | Casual, Formal, Shorten, Expand, tone variations |
| Spices | AI-generated inserts for examples, counterarguments, stats, humor, analogies |
| Surfaces | Web app, Chrome extension, Microsoft Word add-in |
| Summaries | Paid tiers condense web pages, PDFs, and long docs |
| Multilingual input | Non-English drafts rewritten into natural English |
| Plan ladder (May 2026) | Basic $0, Advanced $6.99/mo ($4.89 annual), Unlimited $9.99/mo ($6.99 annual) |
| Plus and Teams | Retired in the May 2026 rebuild |
| Strategic note | AI21 has pivoted toward the enterprise Maestro platform; consumer Wordtune still live as of May 2026 |
Every data point above was verified against vendor documentation on 2026-05-13. See Sources.
What it actually is
One sentence-level rewriting engine exposed through a browser extension, a web editor, and a Word add-in. Users highlight text, pick a rewrite mode or a Spice, and Wordtune returns three to five alternatives that stay close to the source tone.
Summaries condense long documents or web pages on paid tiers. Multilingual input lets non-native writers draft in their first language and receive idiomatic English output.
The moat is narrow. Voice preservation and Spices are the differentiators, but QuillBot paraphrases cheaper and Claude rewrites at higher coherence past a paragraph. AI21 Labs’ pivot toward enterprise tooling leaves Wordtune’s roadmap visibly thinner than two years ago, and the May 2026 plan simplification fits that pattern.
When to pick Wordtune
- Editing an existing draft for clarity or tone. Voice-preserving rewrites keep the writer’s intent while improving readability.
- Non-native English writing for professional contexts. Multilingual input plus Formal mode produces natural business prose from rough drafts.
- Developing thin paragraphs with Spices. Example and statistic inserts unstick weak sections faster than free-form LLM prompting.
- Google Docs and Gmail-heavy workflows. Chrome extension provides inline rewrites without tab switching.
- Summarizing long reads for quick review. Paid tiers handle PDFs and web pages at respectable quality.
When to pick something else
- Drafting from scratch: Claude or ChatGPT. Wordtune cannot generate without source text.
- Grammar and spelling layer across the browser: Grammarly. Broader coverage, stronger rule engine.
- Budget paraphrasing with mode controls: QuillBot Premium remains competitive on pure paraphrase cost and mode variety.
- SEO-heavy marketing output: Jasper or Copy.ai. Template libraries and campaign workflows Wordtune lacks.
- Fiction and long-form creative prose: Sudowrite. Story workflow and the Muse model fit narrative work Wordtune does not.
Pricing
Subscription pricing via wordtune.com/plans:
| Plan | Monthly | Annual (effective/mo) | Key Limits |
|---|---|---|---|
| Basic | $0 | $0 | 10 rewrites and AI suggestions per day, 3 summaries per month, unlimited spelling and grammar |
| Advanced | $6.99 | $4.89 | 30 rewrites per day, 15 summaries per month, unlimited spelling and grammar |
| Unlimited | $9.99 | $6.99 | Unlimited rewrites and summaries, vocabulary enrichment, clarity and fluency tools, priority support |
Prices verified 2026-05-13 via wordtune.com/plans. Annual billing carries roughly a 30 percent discount; monthly billing matches the Monthly column. A 3-day free trial is available for paid plans (card required, no charge during trial). Wordtune retired the $24.99 Plus and $15.99 Teams SKUs in the May 2026 rebuild; multi-seat buyers needing admin or SSO should contact AI21 directly.
Against the alternatives
| Wordtune Unlimited | QuillBot Premium | Grammarly Pro | |
|---|---|---|---|
| Best monthly price (annual) | $6.99 | $8.33 | $12.00 |
| Voice preservation | Strongest | Mode-dependent | Mid |
| Rewrite modes | 7 | 9 | Rewrite via GrammarlyGO |
| Spices (inline inserts) | Yes | No | Partial via GrammarlyGO |
| Summaries | Yes (paid) | Yes (1,200 words free) | Via GrammarlyGO |
| Grammar and spelling | Light | Mid | Strongest |
| Plagiarism scan | None | Yes (20 pages/mo) | Yes (16B+ sources) |
| Best viewed as | Voice-preserving rewriter | Mode-based paraphraser | Inline writing layer |
Failure modes
- No generation from a blank prompt. Wordtune needs source text. Users expecting an LLM chatbot hit a wall immediately.
- Spices feel generic on specialized content. AI-generated inserts work as idea sparks but often need rewriting before they fit. Treat them as starting points, not finished copy.
- Advanced caps still bite heavy users. Thirty rewrites per day sounds generous but burns through quickly inside a long editing session; the $2.10/mo step up to Unlimited (annual) is the realistic upgrade path.
- Sentence-level focus misses document structure. Wordtune does not restructure full documents or suggest reorganization. It polishes what is already there.
- Free-tier summary cap is monthly, not daily. Three summaries per month is enough to evaluate the product, not enough to use it as a routine reading tool.
- AI21 roadmap risk. AI21 Labs’ strategic focus has moved to the enterprise Maestro platform and reasoning models. Consumer Wordtune remains live, but the May 2026 SKU simplification confirms it is no longer the public showcase product it was in 2022-2023.
- Grammar coverage is light. Wordtune flags obvious errors but is not a replacement for a dedicated grammar engine. Pair with Grammarly for full coverage.
- No advertised Teams admin tier. The May 2026 plan ladder is consumer-only. Organizations that previously bought the $15.99/user Teams plan need to confirm whether a comparable admin path still exists.
Methodology
This page was produced by the aipedia.wiki editorial pipeline, an automated system that ingests vendor documentation, verifies pricing and model details against primary sources, and generates the editorial analysis you are reading. No individual human wrote this review. Scoring follows the four-dimension rubric at /about/scoring/ (Utility, Value, Moat, Longevity; unweighted average). Last verified 2026-05-13 against wordtune.com/plans and the Wordtune Help Center pricing article.
FAQ
Is Wordtune free? Yes. The Basic tier covers 10 rewrites and AI suggestions per day plus three summaries per month and unlimited spelling and grammar checks. No credit card required. Unlimited at $6.99/mo annual removes the daily and monthly caps and adds vocabulary and clarity enhancements (wordtune.com/plans).
Who makes Wordtune? AI21 Labs, a Tel Aviv AI research company founded in 2017 by Yoav Shoham, Amnon Shashua, and Ori Goshen. AI21 also develops the Jurassic language model family and the enterprise Maestro platform.
Wordtune vs QuillBot? Wordtune rewrites with voice preservation as the primary goal. QuillBot offers nine paraphrase modes and a word flipper for granular control. Writers who value staying close to source tone pick Wordtune; writers who want targeted mode-based transformations pick QuillBot.
Wordtune vs Grammarly? Grammarly catches grammar, spelling, tone, and clarity inline across 500,000+ sites. Wordtune rewrites sentences you have already written into clearer alternatives. Both tools complement each other; neither replaces the other on its primary job.
What are Spices? AI-generated inline inserts that extend a selected passage with an example, counterargument, statistic, humor, or analogy. Available on every tier; Unlimited removes the daily cap. Useful for developing thin paragraphs fast.
Did Wordtune change pricing in May 2026? Yes. The May 2026 rebuild collapsed the four-tier ladder into Basic, Advanced ($6.99/mo or $4.89 annual), and Unlimited ($9.99/mo or $6.99 annual). The prior $24.99 Plus and $15.99 Teams SKUs are no longer listed on the plans page.
Sources
- Wordtune Plans: Current pricing for Basic, Advanced, and Unlimited tiers (May 2026)
- Wordtune Help Center Pricing: Plan-level feature breakdown
- AI21 Labs company site: Parent company and model backbone
- AI21 Wordtune upgrade coverage (Reworked): Feature history
Related
- Category: AI Writing
- Comparisons: ChatGPT vs Wordtune · Grammarly vs Wordtune · QuillBot vs Wordtune · Sudowrite vs Wordtune · Copy.ai vs Wordtune
