Grammar and paraphrasing: AI tools compared (11)

What grammar and paraphrasing tools are for

Grammar and paraphrasing tools help you revise text that already exists. Depending on their features, they can flag spelling, grammar and punctuation issues or suggest alternative wording. They suit people who want to clarify a message, adjust its tone or review a document in a working language. Previously, shortening a lengthy email meant finding repetition and rewriting individual sentences yourself. With a suitable tool, you can review suggested cuts and keep the changes that preserve your intention. LanguageTool supports spelling and grammar correction. editGPT displays proposed changes and lets you accept or reject them. Unlike a task that starts with an empty document, this workflow gives you an original text against which to judge each suggestion. The final result still depends on checking meaning, register and qualifications, especially where a small wording change could alter what you are promising or requesting.

Example uses:

• Correct grammar and punctuation in an email before checking that its tone and content remain appropriate.
• Shorten a repetitive paragraph while preserving the information your reader needs to understand the intended message.
• Rephrase a professional request to clarify the expected action without changing what you originally intended.
• Compare alternatives for an ambiguous sentence and choose the version that accurately expresses your intended meaning.
• Review a translated document for awkward wording while checking terminology that is specific to its subject.

Our picks by need

These picks follow simple rules applied to the verified data, with no partnership or affiliate link:

• Best scored : LanguageTool. 75/100 on our access and transparency grid.
• Cheapest paid option : WordfixerBot. First plan at $48 per year.

The main tools at a glance

LanguageTool 75/100

LanguageTool helps people writing texts correct spelling, grammar, and punctuation errors. It also lets users rephrase a sentence and apply a personal dictionary to their writing. Features: Correct spelling and grammar; Identify punctuation errors; Rephrase a sentence. Free tier available. Runs on: web browser, Windows, macOS, iPhone and iPad, browser extension, and API. Data hosting: Several regions.

Grammarly 73/100

Grammarly helps people write and revise texts. It corrects spelling and grammar, rephrases sentences, adjusts message tone, identifies similarities with other texts, and produces initial drafts. Features: Correct spelling and grammar; Rephrase sentences; Adjust the tone of a message. Entry price: $12 per month, with a free tier. Runs on: web browser, Windows, macOS, iPhone and iPad, Android, and browser extension. Data hosting: United States.

Wordtune 71/100

Wordtune is for people revising texts, rephrasing sentences, or adjusting their tone. It also supports grammar and spelling correction, shortening or expanding text, and summarizing documents and web pages. Features: Suggest several ways to rephrase a sentence; Correct grammar and spelling; Shorten or expand text. Entry price: $6.99 per month, with a free tier. Runs on: web browser, browser extension, iPhone and iPad, and API. Data hosting: United States.

WriteHuman 68/100

WriteHuman is for people who want to rephrase text while preserving its meaning. It varies sentences and vocabulary, offers several alternative versions, and assesses the likely presence of AI-generated text. Features: Rephrase text while preserving its meaning; Vary sentences and vocabulary; Assess the likely presence of AI-generated text. Entry price: $12 per month, with a free tier. Runs on: web browser, iPhone and iPad, Android, browser extension, and API. Data hosting: Several regions.

Quillbot 61/100

Quillbot supports people writing or revising texts with paraphrasing and grammar correction. It also allows users to summarize documents, translate text, and create bibliographic references for their writing. Features: Paraphrase text in several styles; Correct grammar and spelling; Summarize a document. Entry price: €8.33 per month, with a free tier. Runs on: web browser, Windows, macOS, iPhone and iPad, Android, and browser extension.

editGPT 61/100

editGPT lets people reviewing text correct grammar and punctuation while examining each proposed change. It also adjusts tone, rephrases passages, and edits Word documents while preserving their formatting. Features: Correct grammar and punctuation; Display proposed changes; Accept or reject each correction. Entry price: $96 per year, with a free tier. Runs on: web browser and browser extension.

HumanizeAI.com 58/100

HumanizeAI.com lets people writing texts rephrase content and correct grammar and spelling. It also identifies signs of automated writing, searches for similar passages online, and writes articles in a brand's tone. Features: Rephrase text to improve its flow; Correct grammar and spelling; Identify signs of automated writing. Entry price: $14 per month, with a free tier. Runs on: web browser and API.

WordfixerBot 58/100

WordfixerBot serves people revising or rephrasing text. It preserves meaning when rephrasing, changes a passage's tone, checks grammar, summarizes content and allows two texts to be compared. Features: Rephrase text while preserving its meaning; Change the tone of a passage; Check grammar. Entry price: $48 per year, with a free tier. Runs on: web browser. Data hosting: Several regions.

AI Undetect 53/100

AI Undetect lets people revising texts rephrase them while preserving their subject. It imports documents, compares results from multiple AI text detectors, and automates rephrasing through an API. Features: Rewrite text while preserving its subject; Compare results from multiple AI text detectors; Import a document to rephrase. Entry price: $5 per month, with a free tier. Runs on: web browser and API.

Antidote 50/100

Antidote helps people who write check and revise their texts. It corrects spelling, grammar and typography, suggests rewording, identifies stylistic repetition and provides access to dictionaries and language guides. Features: Correct spelling, grammar and typography; Suggest rewording and shorter sentences; Identify repetition and cumbersome phrasing. Entry price: €59 per year. Runs on: web browser, Windows, macOS, and iPhone and iPad. Data hosting: Several regions.

The category in figures

Of the 11 tools in the category, 10 (91%) offer a free tier, 45% have a public API and 2 have a French interface. The median entry price, per month, is $8 (across 9 tools with a published price). 6 disclose where data is hosted, 0 of them in Europe or on device.

Also useful

These tools belong to another category but also cover this need:

• DeepL DeepL translates texts and documents, applies terminology glossaries and adjusts formality. It serves people w
• ZeroGPT ZeroGPT is for people reviewing texts for likely AI-generated passages or similarities to published texts. It
• Copyleaks Copyleaks helps people analyze texts and images for reused text or AI generation. It assesses the likely prese
• Originality.ai Originality.ai helps people reviewing texts estimate the presence of AI-generated writing and search for plagi
• Reflect Reflect lets people taking notes link them together and ask questions with sourced answers. It also summarizes
• Jetwriter AI Jetwriter AI serves users writing emails and reading web pages. It drafts replies adapted to their style, corr
• HyperWrite HyperWrite helps people write texts through suggestions while typing and passage rewrites. It can also find pu
• Rezi Rezi serves people preparing a resume for a job opening. It rewrites experience descriptions, identifies missi
• Reverso Reverso lets people translating or reviewing text translate documents, correct grammar and spelling, and rephr
• Lavender Lavender is for people writing sales emails and outreach messages. It scores emails, identifies passages that
• Lex Lex lets people writing individually or together create and edit documents. It offers feedback on drafts, inst
• Moonbeam Moonbeam helps people write articles and long texts. It turns notes into article outlines, rephrases selected

Choosing well and avoiding pitfalls

Test passages containing your usual mistakes and sentences whose meaning must remain intact. Check French support where needed, language variants and treatment of specialist vocabulary. Look for visible, reversible changes and explanations you can understand. Compare paraphrasing modes against your needs for clarity, length or tone. Review connections to your word processor, browser and email software. Check how submitted text is transmitted and retained, especially for professional documents. Finally, distinguish included correction features from rewrites subject to restrictions or paid access, and assess whether the suggestions improve your actual texts.

A grammatically acceptable correction can still change your intention. A rewrite may remove a qualification, alter a negative statement or make a commitment stronger. Compare changes with the original and check names, specialist terms and nuance. Rewording does not remove attribution duties when you use someone else’s work. AI text detection assessments do not prove authorship. For sensitive material, minimise submitted information and review the service’s processing terms before enabling corrections across your working applications.

To compare with the cost of using an AI model directly, see the API price calculator.

Free or paid?

Free plans generally provide routine correction and selected paraphrasing features. Advanced suggestions, style options and integrations may follow different conditions. Paying becomes useful when you review documents regularly, need shared vocabulary or want suggestions within your usual working environment. First check whether the proposed changes are relevant and whether you can review them before they are applied.

Tools in the category with a free tier: LanguageTool, Grammarly, Wordtune, WriteHuman, Quillbot, editGPT, HumanizeAI.com, and WordfixerBot.

For which jobs?

The profiles that use these tools most, based on the use cases documented by publishers: content writers, students, marketers, translators, teachers, and researchers.