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Litero vs Wordtune

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Litero starts at $7.90, Wordtune at $4.89. Both have a free tier.

LiteroAcademic writing helper with an outline builder, citation tool, and built-in AI-content checker.WordtuneSentence rewriter that keeps the meaning you intended

Side by side

FactLiteroWordtune
CategoryResearch & Citation ToolsParaphrasing & Rewriting
Pricing modelFreemiumFreemium
Starts at$7.90 month$4.89 month
Public APINoNo
PlatformsWebWeb, Chrome Ext
CompanyLitero Inc.AI21 Labs
Launched—2020
Last verifiedSep 1, 2026Sep 6, 2026

What our research says

Litero

Litero's pitch is source-anchored writing help rather than essay generation: outline, cite, and check a draft against 100 million-plus scholarly sources instead of asking the AI to write the whole thing. Its own AI-detector and humanizer-style features sit in some tension with each other, and buyers should weigh that combination against their institution's academic-integrity policy.

Pros

  • Citation tool draws from over 100 million sources including JSTOR and Google Scholar
  • Bundles outline building, grammar, plagiarism, and AI-detection in one subscription
  • Free tier is usable without a credit card before committing to Premium

Cons

  • Free plan's daily AI output cap will feel restrictive for longer writing sessions
  • Company's own headquarters location is inconsistently reported across public business databases
  • Combining an AI detector with a humanizer-style feature raises academic-integrity questions worth checking against institutional policy

Wordtune

Wordtune still does the one thing it was built for better than the general assistants do, but its owner is in visible trouble and the product has not shipped news in two years. Cheap and useful today, risky as a dependency.

Pros

  • Rewrites preserve intent instead of paraphrasing into something else, which is the whole point
  • In-place browser extension avoids the copy-paste round trip
  • Cheapest tier is under $5 a month on annual billing

Cons

  • Parent AI21 Labs is in financial distress: a $300M round never closed, acquisition talks with NVIDIA and then Nebius, and reported layoffs above 60%
  • The product blog has not been updated since June 2024 and the site footer still reads 2025
  • AI21's own site no longer mentions Wordtune anywhere, suggesting it is no longer a strategic product
  • Free tier's 10 rewrites a day is exhausted in a single editing session

Which one fits

Choose Litero if you need

  • Students and researchers who want citation support tied to real scholarly sources
  • Writers who want a plagiarism and AI-content check before submitting a draft
  • Users who prefer outline-first, source-anchored writing over full AI generation

Choose Wordtune if you need

  • Non-native English writers who need a sentence to read naturally, not be rewritten wholesale
  • Anyone editing inside Gmail, Docs or LinkedIn who wants suggestions in place
  • Light users, since the free tier is genuinely usable for occasional rewriting

More comparisons

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