Guides / Comparisons

The Best AI Writing Tools in 2026: 9 Tools Compared

ChatGPT, Claude, Gemini, Grammarly, Jasper, Copy.ai, QuillBot, Sudowrite and Notion AI compared: free plans, prices as of October 2026, and who each suits.

Mythex Team · 2026-10-22 · 8 min read

The best AI writing tool for most people is a general assistant: ChatGPT, Claude or Gemini. Each can draft, rewrite, summarise and brainstorm, each has a free plan, and the paid plans cost about $20 a month as of October 2026. Add a specialist only if you have a specific job: Grammarly for polishing writing inside your other apps, QuillBot for paraphrasing and summaries, Jasper or Copy.ai for marketing teams, Sudowrite for fiction, and Notion AI if your team already writes in Notion.

AI writing tools at a glance

How we compared

We compared the features, plans and prices each vendor states on its own pricing pages and help center as of October 2026. We did not run hands-on writing tests or score the quality of each tool's output, because quality depends heavily on your prompts, your subject and the model version, which changes every few months. Prices are in US dollars as listed; some vendors show yearly prices by default, and we say which where the page made it clear. We left out anything we couldn't confirm on the vendor's own site.

What we looked at:

• What the tool is for: general drafting, editing, paraphrasing, marketing or fiction.
• Where it works: its own app, inside other apps, or inside your docs.
• Free plan and entry price.
• Real limits: prompt caps, word limits, seats, and what the cheaper plan leaves out.

ChatGPT: the all-rounder

ChatGPT is OpenAI's assistant and the tool most people try first. It handles first drafts, emails, outlines, rewrites in a different tone, and summaries of long text you paste in.

• Pricing as of October 2026: Free is $0. Go is $8 a month for lighter use. Plus is $20 a month. Pro starts at $100 a month, with tiers at $100, $200 and $500. Business is $20 per user a month billed annually for two or more users, or $25 billed monthly, and OpenAI says Business data isn't used for training by default.
• Who it suits: almost anyone who writes, from solo founders to small teams.
• Real limits: drafts can sound generic unless you give it examples of your own writing and specific details. It will also state wrong facts confidently, so check anything that matters.

Claude: long documents and careful edits

Claude is Anthropic's assistant. It is a good fit when you work with long material: reports, contracts, research notes, or a long draft you want tightened without losing your voice.

• Pricing as of October 2026: Free is $0. Pro is $20 a month, or $17 a month billed annually ($200 up front). Max starts at $100 a month for 5x or 20x Pro's usage. Team is $20 per standard seat a month billed annually ($25 monthly), for 2 to 150 people.
• Features that matter for writing: the free plan includes web search, file creation, memory across conversations and Docs; Pro adds Projects, which keep reference files and instructions together for repeat work.
• Real limits: usage limits apply on every plan, including paid ones, so heavy users can hit a cap during a long session. Like any model, it needs fact-checking.

Gemini: for Google users

Gemini is Google's assistant. Its advantage is the Google ecosystem: if your documents and email already live in Google's apps, it sits close to where you work.

• Pricing as of October 2026 (US): Free is $0 with a Google account. Google AI Plus is $4.99 a month, Google AI Pro is $19.99 a month, and Google AI Ultra starts at $99.99 a month. For businesses, Gemini Enterprise Business edition starts at $21 per seat a month.
• Features that matter for writing: the free plan lists Canvas, a space for drafting and editing documents, plus Deep Research and Gems (saved custom assistants).
• Real limits: the free plan uses a lighter model, and the stronger models and higher limits sit on Pro and above. Prices also vary by country, so check your local page.

For a closer look at how these three differ beyond writing, see ChatGPT vs Claude vs Gemini.

Grammarly: polish inside every app

Grammarly is different from a chat assistant: it works inside the places you already write, such as your browser and email, and suggests fixes as you type.

• Pricing as of October 2026: Free is $0 and includes corrections, tone detection and 100 AI text-generation prompts a month. Pro is $12 per member a month billed annually, with 2,000 AI prompts per member a month, full-sentence rewrites, tone adjustment, and plagiarism and AI-text detection. Enterprise is custom, with unlimited prompts.
• Who it suits: people who write a lot of short business text (emails, messages, proposals) and want it cleaner, especially if English isn't their first language.
• Real limits: it's best at improving text you've written, not at producing long original drafts. 100 free prompts a month goes quickly if you use it for generation.

QuillBot: paraphrasing and summaries

QuillBot started as a paraphrasing tool and still does that best, alongside grammar checking, a summariser and a plagiarism checker.

• Pricing as of October 2026: the free plan paraphrases up to 125 words at a time with no daily limit, in the Standard and Fluency modes. Premium is $19.95 month to month or $8.33 a month on the annual plan ($99.95 a year), with unlimited paraphrase length, all nine modes and up to 25,000 words a month of plagiarism checking.
• Who it suits: students, researchers and anyone rewording existing text.
• Real limits: the plagiarism checker isn't on the free plan. Paraphrasing someone else's work doesn't make it yours; cite sources properly.

Jasper: marketing teams with a brand voice

Jasper is built for marketing teams rather than individuals. Its focus is keeping content on-brand across many writers and campaigns.

• Pricing as of October 2026: Pro is $69 per seat a month, or $59 billed yearly, with a 7-day free trial. Pro includes one seat, 2 brand voices, 5 knowledge assets, 3 audiences, and agents for core marketing workflows. Business is custom and adds unlimited brand voices, a no-code agent builder and API access.
• Who it suits: content and marketing teams producing a steady volume of on-brand copy.
• Real limits: there's no free plan, and it costs about three times a general assistant per seat. A solo founder rarely needs it.

Copy.ai: several models in one chat

Copy.ai has moved toward go-to-market workflows for sales and marketing teams, with a smaller chat plan for individuals and small teams.

• Pricing as of October 2026: the Chat plan is $29 a month, or $24 a month billed yearly ($288), with up to 5 seats, unlimited words and access to OpenAI, Anthropic and Gemini models. Workflow plans start at $1,000 a month.
• Who it suits: a small team that wants one shared chat tool with a choice of models.
• Real limits: the pricing page doesn't list a free plan, and the workflow plans are priced for larger sales teams, not small businesses.

Sudowrite: for fiction

Sudowrite is made for novelists and story writers, with tools to write, rewrite, describe and expand scenes, match your style and keep a series consistent.

• Pricing as of October 2026: Hobby & Student is $10 a month with 225,000 credits, Professional is $22 a month and adds developmental edits, line edits and beta reads, and Max is $44 a month with 2,000,000 credits that roll over for 12 months. All plans offer a free trial without a credit card, and yearly billing is listed as up to 50% off.
• Who it suits: fiction writers. It's the wrong tool for business copy.
• Real limits: usage is credit-based, so long projects can use up a cheaper plan.

Notion AI: writing where your docs live

Notion AI works inside Notion pages and databases: drafting docs, summarising notes and autofilling database fields.

• Pricing as of October 2026: the Free and Plus plans ($10 per member a month) include only a trial of Notion AI. The full set, including Notion Agent and AI Meeting Notes, is on Business at $20 per member a month. Notion says yearly billing can save up to 20%.
• Who it suits: teams whose documentation already lives in Notion.
• Real limits: if you don't use Notion already, it's an expensive way to get an AI writer. Plus doesn't include full AI. See Notion alternatives if you're weighing the workspace itself.

Which one should you pick?

• You write a bit of everything: start with the free plan of ChatGPT, Claude or Gemini, and pay $20 a month only when you hit limits.
• You mainly fix and polish: Grammarly, or QuillBot if you paraphrase a lot.
• You run a marketing team: Jasper for brand voice controls, or Copy.ai's Chat plan for a cheaper shared tool.
• You write fiction: Sudowrite.
• Your team writes in Notion: Notion AI on the Business plan.

How to get better writing from any of them

The tool matters less than how you use it. A few habits help with every option above:

1. Give it context. Say who the reader is, what you want them to do, and paste a sample of your own writing to match.
2. Ask for an outline first. Fix the structure before you ask for full paragraphs.
3. Edit hard. Cut filler, add real examples and numbers you can stand behind, and check every fact.
4. Keep your voice. Read it aloud. If it doesn't sound like you, rewrite it.

Our guide to prompt engineering covers prompting in more depth, and content marketing for startups covers what to write in the first place.

Verdict

A general assistant covers most writing work, and the free plans of ChatGPT, Claude and Gemini are good enough to find out which one you prefer. Grammarly and QuillBot are worth adding for editing and paraphrasing. Jasper and Copy.ai make sense for marketing teams, Sudowrite for fiction, and Notion AI for teams already in Notion. Try two tools on the same real task, a newsletter or a proposal you actually need, and keep the one whose draft needs the least fixing.