Best AI writing tools (October 2026)
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AI for marketing copy, blog posts and everyday writing, with brand voice and editing features.
The ranking
- 1
Grammarly
by GrammarlyLowest entry priceWriting assistant that checks grammar and tone everywhere you type, with AI rewriting and a plagiarism checker.
Free plan or trialBrand voicePlagiarism checkerPros
- Free plan or trial
- Brand voice
Cons
- No drawbacks found in our data
- 2
Jasper
by JasperGood all-round optionAI content platform for marketing teams, with brand voices, knowledge assets and audiences.
Pros
- Free plan or trial
- Brand voice
- 7-day free trial
Cons
- Plagiarism checker: check on Jasper's site
- Business plan on request
- 3
Writesonic
by WritesonicGood all-round optionAI writing and SEO platform for articles and AI-search visibility, priced for marketing teams.
Pros
- Free plan or trial
- Brand voice
- Free trial
Cons
- Plagiarism checker: check on Writesonic's site
- 4
Copy.ai
by Copy.aiGood all-round optionAI chat and workflow platform for sales and marketing content, with access to several AI models.
Pros
- —
Cons
- Free plan or trial, Brand voice, Plagiarism checker: check on Copy.ai's site
Compare all in a table
| Rank | Product | Score | Entry price (USD) | Free plan or trial | Brand voice | Plagiarism checker | Action |
|---|---|---|---|---|---|---|---|
| 1 | Grammarly | 100 | 12.00 | Yes | Yes | Yes | Visit site |
| 2 | Jasper | 69 | 69.00 | Yes | Yes | Not confirmed | Visit site |
| 3 | Writesonic | 69 | 79.00 | Yes | Yes | Not confirmed | Visit site |
| 4 | Copy.ai | 35 | 29.00 | Not confirmed | Not confirmed | Not confirmed | Visit site |
Entry price is the cheapest paid plan, converted to USD where the vendor prices in another currency. Usage-based prices are not compared.
What to check
Free plan or trial. 3 of 4 confirm it.
Brand voice. 3 of 4 confirm it.
Plagiarism checker. 1 of 4 confirm it.
Score: features 30, free plan or trial 20, pricing transparency 25, entry price value 25. Commissions are never part of it. Full method.
Questions
What is the cheapest option?
Grammarly, from USD 12 per member per month.
Is there a free option?
1 of the 4 ranked products have a free plan.