Updated October 2026

Best AI writing tools

From grammar checks to fiction and marketing copy, these are the AI writing tools worth using, and who each one is for.

AI writing tools help you write faster and better: fixing grammar, rewriting sentences, generating drafts, matching a brand voice or even co-writing novels. Some work inline wherever you type; others are full content platforms.

General assistants like ChatGPT and Claude are excellent writers, but specialised tools add features like inline checking, paraphrasing modes, plagiarism detection and brand governance.

Our top picks

Best for grammar everywhereGrammarlyInline corrections and tone in almost any app.Read review → Best for paraphrasingQuillBotMany rewriting modes at a very low price.Read review → Best for quick rewritesWordtuneSentence-level alternatives in one click.Read review → Best for marketing teamsJasperBrand Voice, knowledge and campaign tools.Read review → Best for fictionSudowriteStory Bible and fiction-tuned models.Read review → Best for GTM workflowsCopy.aiMulti-model chat plus sales and marketing workflows.Read review →

All Writing tools

Every tool in this category, with pricing and an in-depth review.

How to choose the right writing tool

Decide where you writeIf you want help inside Gmail, Docs and LinkedIn, choose an inline tool like Grammarly or Wordtune.
Choose by content typeAcademic and student work benefits from QuillBot; fiction from Sudowrite; marketing from Jasper or Copy.ai.
Protect your voiceUse AI for drafts and edits, then revise in your own words, especially for anything published.
Mind academic rulesCheck your school or publisher’s policy on AI-assisted writing.

Free vs paid

Grammarly, QuillBot and Wordtune have strong free plans. Paid writing tools range from about $7 per month (Wordtune) to $59+ per month for marketing platforms like Jasper.

Related guides

Frequently asked questions

What is the best AI writing tool?

Grammarly is the best inline writing assistant for most people. For drafting long content, general assistants like Claude and ChatGPT are excellent.

Is there a free AI writing tool?

Yes. Grammarly, QuillBot and Wordtune all have free plans, as do ChatGPT and Claude.

Can AI detectors tell if I used AI?

AI detectors give estimates and can be wrong. Focus on using AI transparently and following your institution’s rules.