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By the toolist.ai editors. Researched from vendor pages and hands-on tests published by others, not hands-on tested by toolist.ai. Updated October 9, 2026.
Best writing tools
AI writing tools now split into proofreaders, rewriters and marketing platforms. Month to month, Grammarly Pro costs $30 and QuillBot Premium $19.95; Copy.ai's Chat plan is $29 for five seats, Jasper Pro $69 for one, and Writesonic, which now sells AI search tracking first, starts at $99. All five cost less billed yearly.
Quick picks
- Copy.ai: best for small sales and marketing teams sharing one AI workspace
- Grammarly: best for everyday proofreading and tone fixes wherever you write
- Jasper: best for on-brand marketing copy for teams
- QuillBot: best for paraphrasing and polishing writing you already have, cheaply
- Writesonic: best for tracking and improving how AI search answers mention your brand
Compared
| Tool | Cheapest paid plan | Price per unit, calculated | Basis | Prices checked |
|---|---|---|---|---|
| Copy.ai | Chat ($29 a month) | – | Researched | 2026-10-09 |
| Grammarly | Pro ($30 a month) | $0.015 per AI prompt | Researched | 2026-10-09 |
| Jasper | Pro ($69 a month) | – | Researched | 2026-10-09 |
| QuillBot | Premium ($19.95 a month) | – | Researched | 2026-10-09 |
| Writesonic | Starter ($99 a month) | $6.60 per AI article | Researched | 2026-10-09 |
Listed in alphabetical order: we do not rank tools we have not tested ourselves. Price per unit divides each cheapest plan's monthly price by what it includes. Units differ between tools, so read the unit before comparing two rows.
Filter every tool by price and free plan in the tool directory, or price your own month in the AI cost calculator.
How to choose
- The job: Grammarly for proofreading and tone wherever you type, QuillBot for rewording text you already have, Jasper for a team writing in one brand voice (Pro is one seat; more need its sales-priced Business plan), Copy.ai for a small sales and marketing team sharing one AI workspace (though it has shipped no product update since June 2025), and Writesonic for tracking how AI search answers mention your brand.
- Yearly or monthly: billed yearly, Grammarly Pro is $12 a month (60% less) and QuillBot Premium $8.33 (about 58% less), while Writesonic saves about 20% ($79), Copy.ai about 17% ($24) and Jasper about 14% ($59 against $69).
- Free plans: Grammarly's free plan includes 100 AI prompts a month and QuillBot's paraphrases 125 words at a time; Jasper and Writesonic offer 7-day trials instead (Jasper's bills automatically unless you cancel; Writesonic's needs no card), and Copy.ai retired its free plan.
- Refunds: Copy.ai within 5 calendar days of the first purchase, Writesonic within 7 days, QuillBot only where the law requires, and none from Jasper or Grammarly.
Read more
- Copy.ai review · pricing
- Grammarly review · pricing
- Jasper review · pricing
- QuillBot review · pricing
- Writesonic review · pricing
Other categories: avatar video, text to video, editors, clips, script to video, voice, image, coding. All lists: best-of lists.