By ProWritingAidLondon, United Kingdom1 product across 1 category
Built for this. Built for manuscripts rather than emails: pacing, repetition, dialogue tags and the reports a novelist actually wants. Sells a lifetime licence.
Free plan
Yes
Free tier with a word limit, plus Story Canvas and 2 runs of the line editing report a day
Month to month
$30/mo
Premium
Billed yearly
$10/mo
$120 a year, Premium plan −67%
Watch out: The volume of suggestions is overwhelming until you turn most of them off. There are three ways to pay — monthly, yearly, or a one-off lifetime licence — and the yearly rates the page shows are sale prices rather than the standing ones.
All plans (3)
Plan
Price
What you get
Free
$0
Free tier with a word limit, plus Story Canvas and 2 runs of the line editing report a day
Premium
$30/mo · $10/mo yearly
everything in the free tier plus unlimited runs of the line editing report. A Storyteller Sale running as this was checked cut the yearly rate 25 per cent to $7.50 a month, or $90 for the year
Premium Pro
$36/mo · $12/mo yearly
everything in Premium plus 30 chapter critiques a day. The same sale cut its yearly rate to $9 a month, or $108 for the year. Yearly and lifetime both carry a 3-day money-back guarantee, and the sale applies to yearly plans only
By LexSyracuse, United States1 product across 1 category
Built for this. A word processor that happens to have AI in it, so the writing surface comes first and the suggestions stay out of the way until asked.
Free plan
Yes
Free tier available
Month to month
$24.99/mo
Lex Pro
Billed yearly
$14.99/mo
$179.88 a year, Lex Pro plan −40%
Watch out: Fewer features than a dedicated editing tool, by choice. There is one paid tier, and the $30 of AI credits it includes each month is worth more than the subscription at either billing term, so what you are buying is model access more than software.
All plans (2)
Plan
Price
What you get
Free
$0
Free tier available
Lex Pro
$24.99/mo · $14.99/mo yearly
premium AI models including GPT-5 and Claude 4.1 Opus, $30 of AI credits included every month, much higher usage limits, priority support, early access to new features and a money-back guarantee. The annual plan opens on a trial where the monthly one subscribes straight away
By GrammarlySan Francisco, United States1 product across 1 category
Built for this. Works inside the apps you already write in rather than a separate window, which is why it actually gets used. Grammar, tone and clarity in place.
Free plan
Yes
Writing without spelling and grammar mistakes, tone detection, and 100 AI prompts for
Month to month
$30/mo
Pro
Billed yearly
$12/mo
$144 a year, Pro plan −60%
Watch out: Better at fixing than composing. It smooths writing toward a neutral register, which is not always what you want.
All plans (3)
Plan
Price
What you get
Free
$0
Free tier: writing without spelling and grammar mistakes, tone detection, and 100 AI prompts for generating text
Pro
$30/mo · $12/mo yearly
rewriting whole sentences in a click, tone adjustment, unlimited personalised suggestions, and plagiarism and AI-text detection. It opens on a 7-day free trial with nothing to pay on the day and a reminder two days before it ends
Enterprise
Custom
adds proactive AI across the apps you work in, dedicated support, bring-your-own-key encryption, custom roles and permissions, and data loss prevention
By AI21 LabsTel Aviv, Israel1 product across 1 category
Built for this. Offers several rewrites of a sentence at once and lets you pick, which is a better fit for how editing actually works than a single suggestion.
Free plan
Yes
Free Basic plan: 10 rewrites and AI suggestions a day plus AI generations, 3 AI summarisations
Month to month
$13.99/mo
Advanced
Billed yearly
$6.99/mo
Advanced plan −50%
Watch out: Sentence-level by design, so it will not fix a paragraph that is structured wrong. The free tier runs to 10 rewrites a day and 3 AI summaries a month, and even the middle plan is capped at 30 rewrites a day — only the top plan is actually unlimited, which is what its name is doing.
All plans (3)
Plan
Price
What you get
Free
$0
Free Basic plan: 10 rewrites and AI suggestions a day plus AI generations, 3 AI summarisations a month, and unlimited spelling corrections and grammar checks
Advanced
$13.99/mo · $6.99/mo yearly
30 rewrites and AI suggestions a day, 15 AI summarisations a month, and unlimited AI recommendations, spelling corrections and grammar checks
Unlimited
$19.99/mo · $9.99/mo yearly
unlimited rewrites, AI suggestions and summarisations, with vocabulary enhancements, clarity improvements, fluency increases and premium support. Both paid plans open on a 3-day free trial, and annual billing is exactly half the monthly rate on each
By LearneoRedwood City, United States2 products across 1 category
Built for this. The paraphraser most students actually use, with modes that change how far it moves from your original rather than one setting.
Free plan
Yes
Paraphrasing up to 125 words at a time in 2 modes, basic grammar fixes, humanizing up to 125
Month to month
$19.95/mo
Premium
Billed yearly
$8.33/mo
Premium plan −58%
Watch out: Rewriting someone else’s sentence is still their sentence, and universities treat it that way. The free tier caps paraphrasing at 125 words at a time, and paying month to month costs about two and a half times the annual rate.
All plans (3)
Plan
Price
What you get
Free
$0
Free tier: paraphrasing up to 125 words at a time in 2 modes, basic grammar fixes, humanizing up to 125 words for 6 uses a day, basic summaries, and limited access to the AI detector
Premium
$19.95/mo · $8.33/mo yearly
full access to paraphrasing in unlimited modes, advanced grammar recommendations, full humanizing, custom summaries and full access to the AI detector
Team Plan
no price published on the plan cards, sold through a separate page
everything in Premium plus team usage metrics, a user management dashboard, centralised billing, data control, and priority assistance with account management support
By Boondoggle StudioUnited States1 product across 1 category
Built for this. Marks the sentences that are hard to read and the adverbs you did not need, and does nothing else. The free web version has no sign-up.
Free plan
Yes
Free in the browser with no sign-up: the readability marking, and no AI at all
Month to month
$25/mo
Individual 5K
Billed yearly
$8.33/mo
$100 a year, Individual 5K plan −67%
Watch out: Readability is not the same as quality — it will flag a precise technical sentence as difficult. Deliberately narrow.
All plans (4)
Plan
Price
What you get
Free
$0
Free in the browser with no sign-up: the readability marking, and no AI at all
Individual 5K
$25/mo · $8.33/mo yearly
5,000 AI sentence rewrites a month, unlimited advanced grammar fixes, tone, length and style adjustment, and unlimited document review
Individual 10K
$30/mo · $12.50/mo yearly
the same again at 10,000 AI sentence rewrites a month
Team 10K
$30/mo · $12.50/mo yearly
10,000 AI sentence rewrites a user a month, licences managed on one bill, admin roles and extra AI credits. All three are Hemingway Editor Plus, the paid AI layer, and each opens on a free trial
By NotionSan Francisco, United States2 products across 2 categories
Strong fit. Writes and summarises inside the workspace where your notes already live, so it has the surrounding context.
Free plan
Yes
Trial of Notion AI on the free and Plus plans
Month to month
$24/mo
Notion Business, sold to teams rather than to one person
Billed yearly
$20/mo
Notion Business plan −17%
Watch out: Only as good as how organised your Notion already is. Beyond the trial it is not sold on its own: the full AI features arrive with the Business plan.
All plans (3)
Plan
Price
What you get
Free
$0
Trial of Notion AI on the free and Plus plans
Notion Business
$24/mo · $20/mo yearly
the first plan with Notion AI in full, including Notion Agent, AI meeting notes and enterprise search
Notion Enterprise
Custom
adds zero data retention with LLM providers and admin controls over AI. Notion AI is part of these plans rather than sold separately
By SudowriteSan Francisco, United States1 product across 1 category
Strong fit. Built for long fiction: it holds a story bible, keeps characters consistent across chapters, and suggests rather than replaces.
Free plan
No
Paid from the start
Month to month
$19/mo
Hobby & Student
Billed yearly
$10/mo
Hobby & Student plan −47%
Watch out: Paid from the start, though the trial takes no card. The tiers differ mainly by monthly credits — 225,000, one million and two million — rather than by features, so the question is how much you write.
All plans (3)
Plan
Price
What you get
Hobby & Student
$19/mo · $10/mo yearly
225,000 credits a month, for people writing for fun or for school
Professional
$29/mo · $22/mo yearly
1,000,000 credits a month, raised from 450,000 as this was checked, and pitched at a novel or a screenplay
Max
$59/mo · $44/mo yearly
2,000,000 credits a month, for authors publishing several times a year. Every tier carries the same story intelligence, style matching and continuity across a series, and all three open on a free trial that asks for no card
Two things separate these and both are on every card.
Fit
Whether a tool is built for this job, a strong fit for it, or
able to do it without that being its focus.
Free plan
Whether there is a tier you can keep using rather than a
trial that expires.
The order
Fit first, then a free plan, then alphabetical. There is
no score, no weighting we decline to publish, and nothing on this site a company can buy.
Questions
What is the best ai for writers?
There is no single answer, which is why this page lists 12 rather than one: Sudowrite, ProWritingAid, Lex, Claude, Grammarly, ChatGPT, Wordtune, QuillBot, Hemingway Editor, Notion AI, Gamma, Le Chat (Mistral). 9 of them are built for this kind of work rather than able to do it. Start with a free one.
Which of these have a free plan?
11 of the 12: ProWritingAid, Lex, Claude, Grammarly, ChatGPT, Wordtune, QuillBot, Hemingway Editor, Notion AI, Gamma, Le Chat (Mistral). Free means a real free tier you can keep using, not a trial that expires.
How was this list chosen?
By hand, from the 750 products this site tracks, and it is checked against the catalogue on every build — a product renamed or removed breaks the build rather than quietly disappearing from here. Nothing on this site can be paid for: no listing, no position, no wording.
