The best AI writing tools, by phase of the writing process (2026)
Most AI writing tools are great at producing words and terrible at producing rankings. The difference is research, structure and genuine judgement — the parts AI is worst at. Used well, these tools take the boring 80% off your plate so you can spend your time on the 20% that actually wins: angle, accuracy and a point of view. This is a guide per phase — research, drafting, on-page SEO, product copy — not a head-to-head test of the same brief: the four tools do different jobs and are not ranked against each other.
How to choose
Use AI for the scaffolding — research, outlines, first drafts, on-page checks — and keep the judgement human. Frase for what to write, QuillBot to tighten it, Rank Math to optimise it on WordPress. The tool doesn't rank; a useful, opinionated page does.
Compared at a glance
| Tool | Best for | Entry price & terms | Skip it if |
|---|---|---|---|
| Frase | Research and briefs that target what actually ranks | Starter $39/mo billed yearly ($49 monthly), 1 seat, 1 site | you only need quick paraphrasing |
| QuillBot | Fast paraphrasing, summarising and tightening drafts | Free $0; Premium $19.95 a month, or $8.33 a month billed annually ($99.95 a year) | you need full SEO research and briefs |
| Rank Math | On-page SEO and schema inside WordPress | Pro €7.99 a month billed annually, excl. VAT (list price €8.99) | you're not publishing on WordPress |
| Smartli | AI copy tuned for e-commerce product and ad text | Starter $39/mo, monthly only (drops on annual billing); annual billing starts at Pro $24/mo ($288/yr) | you're writing long-form editorial, not product copy |
Prices are the entry terms in our dossier for each tool, with the billing basis where the vendor publishes it. Currencies are shown as the vendor lists them; we do not convert. Check the live pricing page before you buy.
The picks, in detail
AI-powered SEO content writing and optimization. Research, outline, write, and optimize articles that rank — all in one place.
Skip it if you only need quick paraphrasing.
Visit Frase →Read our full Frase review →Paraphrasing, grammar, summarising and plagiarism checking in one box of writing utilities.
Skip it if you need full SEO research and briefs.
Visit QuillBot →Read our full QuillBot review →WordPress SEO plugin with schema, on-page analysis and rank tracking.
Skip it if you're not publishing on WordPress.
Visit Rank Math →Read our full Rank Math review →AI writing suite for e-commerce: product listings, ad copy, SEO text and brand assets. Each of the nine tools is competent rather than deep, so leaning hard on one job means outgrowing it.
Skip it if you're writing long-form editorial, not product copy.
Visit Smartli →Read our full Smartli review →Frequently asked questions
Can AI writing tools actually rank on Google?
AI helps with research, structure and speed, but pages rank on genuine usefulness and a real point of view — which still need a human. Use AI for the boring 80% and bring judgement to the 20% that wins.
What's the best AI tool for SEO content?
Frase is strong for research and briefs that target ranking intent; pair it with Rank Math for on-page optimisation if you're on WordPress, and QuillBot to tighten the draft.
Will Google penalise AI-written content?
Google rewards helpful content regardless of how it's made, and demotes unhelpful content — also regardless. AI-assisted is fine; AI-spam is not. The bar is usefulness.
These are our researched picks — not paid placements. Some links are affiliate links: we may earn a commission if you sign up, at no extra cost to you, and it never changes our pick. We don't publish fake or “exclusive” prices — verify current pricing on each provider's site. How we review →
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