Writing tools
Last updated
Writing is one of the faster-moving corners of the AI tool market, with 25 tools currently tracked in this catalog. Rather than one dominant product, the space is split between a handful of well-funded leaders and a long tail of focused, single-purpose tools.
Most writing tools compete on three things: how much setup they require before they're useful, how well they fit into tools you already use, and how transparent their pricing is once you outgrow the free tier. A quick trial against a real task from your own workflow tells you more than any feature comparison chart.
Where most people start
Grammarly
AI writing assistant that checks grammar, style, tone, and clarity across browsers, desktop apps, and mobile devices.
Copy.ai
AI copywriting tool designed for marketers producing ad copy, social posts, email hooks, and campaign content quickly from templates.
DeepL
Neural machine translation service consistently rated best-in-class for accuracy, particularly for European language pairs.
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Filter Writing tools
Writing tools curated for practical business use cases.
Grammarly
AI writing assistant that checks grammar, style, tone, and clarity across browsers, desktop apps, and mobile devices.
Copy.ai
AI copywriting tool designed for marketers producing ad copy, social posts, email hooks, and campaign content quickly from templates.
DeepL
Neural machine translation service consistently rated best-in-class for accuracy, particularly for European language pairs.
Writesonic
AI writing platform covering long-form content, SEO articles, ad copy, and an AI chatbot through a single subscription.
Wordtune
AI writing tool from AI21 Labs that rewrites, shortens, and expands sentences with multiple tone and style options directly in the browser.
Writer
Enterprise AI writing platform with company-specific AI training, brand voice consistency, and security features for professional content teams.
QuillBot
AI paraphrasing and writing enhancement tool with seven writing modes, grammar checking, plagiarism detection, and summarisation capabilities.
Rytr
Affordable AI writing assistant with 40+ use cases and tones, popular among budget-conscious marketers and small business owners for short-form content.
Anyword
AI copywriting platform that generates marketing copy with predictive performance scores showing estimated engagement before publishing.
Beehiiv AI
Newsletter platform with AI writing assistance, audience growth tools, and monetisation built in, used by many of the fastest-growing independent newsletters.
ContentAtScale
AI blog post writing platform that generates long-form SEO content while including a best-in-class AI content detector to verify content appears human-written.
TextCortex AI
AI writing assistant available as browser extension, web app, and desktop app with customisable AI personas, 25+ writing tools, and over 25 language support.
Typeface AI
Enterprise AI content platform that generates brand-consistent marketing content across channels, trained on a company's own brand guidelines and creative assets.
Sudowrite
AI writing tool designed specifically for fiction authors with features for drafting, rewriting, and story development rather than marketing or business content.
Jenni AI
AI writing assistant designed for academic contexts with in-text citation generation, research paper upload, and academic paraphrasing tools for students and researchers.
Hyperwrite AI
AI writing assistant browser extension providing inline TypeAhead autocomplete in any browser text field across all websites, plus Personal Assistant for agentic web tasks.
Originality.ai
AI content detection combined with plagiarism checking for content teams, agencies, and publishers who need to verify both AI authorship and originality before publication.
Jasper AI
AI writing platform designed for marketing teams producing long-form blog content, ad copy, email campaigns, and social media at scale, with brand voice training and team collaboration.
ProWritingAid
AI writing editor that analyses style, grammar, readability, overused words, clichés, and dialogue, providing in-depth writing reports to help authors and content creators improve their writing quality.
Undetectable AI
AI content humanizer that rewrites AI-generated text to evade AI detection tools, producing content that reads as human-written while preserving the original meaning.
Longshot AI
AI content writing platform that generates factual long-form content with real-time fact-checking, citations, and SEO optimisation, reducing the hallucination risk in AI-generated content.
NovelAI
AI fiction writing platform and anime image generator tailored for creative writers and artists, featuring customisable AI storytelling, adventure mode, and anime-style image generation with privacy focus.
Hemingway Editor
Writing tool that highlights complex sentences, passive voice, adverbs, and readability issues using colour-coded feedback, helping writers produce clear, direct prose inspired by Ernest Hemingway's writing style.
Lex
AI-integrated word processor that provides inline AI writing assistance, document-level suggestions, and intelligent autocomplete within a clean, distraction-free writing interface designed for long-form content.
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Grammarly vs Copy.ai
Two of the top Writing tools, compared side by side.
Grammarly
Grammarly Inc
Copy.ai
Copy.ai
Free with basic checks. Pro $12/month billed annually ($30/month billed monthly). Business $15/member/month with team features and style guides.
Free plan with 2,000 words/month. Starter $36/month billed annually ($49/month billed monthly) for unlimited words. Teams at custom pricing.
Business plan includes SSO and admin controls. Enterprise with data handling agreements.
Enterprise plans include SSO and data security features.
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- Best real-time grammar and style checking available
- Widest integration support of any AI writing assistant
- Free plan genuinely useful for everyday writing
- Tone detection helps with professional communication
- Template library reduces blank page friction
- Affordable with genuine unlimited word generation on paid plans
- Fast output for short-form marketing copy
- Good integration with marketing platforms
- GrammarlyGO generative features weaker than dedicated AI writing tools
- Monthly billing expensive at $30 versus $12 annual
- Browser extension has broad data access
- Limited value for non-English writing
- Long-form content quality requires more editing than Jasper
- Brand voice less sophisticated than dedicated alternatives
- Template approach can produce formulaic output without iteration
Buying Guide
How to choose a writing tool
- Shortlist two or three writing tools and run the same real task through each before picking one — feature lists rarely predict day-to-day fit.
- Check the pricing model closely: usage-based plans can look cheap at first and scale unpredictably once you're a regular user.
- Confirm data handling and retention policies if the tool will touch anything proprietary or customer-facing.