Best for
Best for writers and teams working in several languages who want the same checker inside their browser, office suite and mail client.
- Freelancers
- Small and mid-sized
- Enterprise
AI Writing Comparison
LanguageTool vs. NovelAI
At a glance
At a glance
Best for
Best for novelists and interactive-fiction writers who need a story's own lore held in context.
- Freelancers
Cataleo does not name a winner. Both statements come from the vendors themselves.
Full Comparison
| Criterion | LanguageTool | NovelAI |
|---|---|---|
| Starting price | Free tier Premium is billed monthly, quarterly, annually or for two years; Teams is priced per user for 2 to 1,000 or more users. | Tablet $10 / month Scroll is $15 and Opus $25 a month. Every tier includes unlimited text generation and text to speech. |
| Free trial | Free tier | Trial of 30 image generations, no permanent free tier |
| Output | Spelling, grammar, punctuation and style corrections, plus AI paraphrased sentences | Long-form fiction and anime images |
| Languages | More than 30 languages and dialects, with six English varieties | Not stated |
| Hosting | Cloud (SaaS), API servers in Germany; the source code is published for self-hosting | Not stated |
| Content types | Checks and rewrites text the writer has already started rather than generating a content format; Premium raises the limit to 150,000 characters per text field, which covers blog articles, letters and long e-mails | Long-form fiction and interactive text adventure |
| Brand voice | Yes, a Style Guide of custom rules for consistent wording, and a shared Team Style Guide plus a Team Dictionary of technical terms on the Teams plan | No brand-voice profile. Prebuilt Style, Theme and Inspiration modules steer prose toward a genre or an author's body of work, and Phrase Bias raises or lowers the odds of chosen words; training new custom modules is no longer supported |
| Content scoring | No content or readability score. The editor's Statistics view tracks writing activity over time, the languages used, the errors made and the suggestions applied, which measures the writer's habits rather than rating a piece of text | No content score. The editor shows token probabilities behind each generated token instead, which reports the model's confidence rather than the quality of the text |
| Drafting tools | Yes, an AI paraphrasing tool that rewrites a sentence to be more formal, more fluid or shorter, uncapped on Premium | Lorebook, Memory, Author's Note, Text Adventure mode, modules and sampling presets |
| Templates | No content templates. LanguageTool corrects and rephrases text the writer brings to it; the only things reusable across documents are the personal dictionary and the Style Guide rules | A story exports as a .scenario file carrying tags, a description and user-defined placeholders, so importing it reopens the story as a customisable starting point |
| Team workflows | Yes, the Teams plan adds e-mail invitations, user management, a shared style guide and a shared dictionary for 2 to 1,000 or more users | Built for one writer. Work moves between accounts as files rather than seats: .story and .scenario for stories, .json, .lorebook or an image with the data embedded for Lorebooks |
| API | Yes, the Proofreading HTTP API with JSON responses, monthly tiers from 100 to 10,000 requests, up to 60,000 characters per request, customisable rules and personal dictionary access, served from Germany without storing the submitted text | In-app scripting rather than a public HTTP API. Extensions are TypeScript scripts running sandboxed in a Web Worker, and they cannot make network requests |
| Deployment | Cloud (SaaS), Browser-based | Cloud (SaaS), Browser-based |
| Onboarding | Documentation and knowledge base | Documentation and knowledge base |
| Company size | more entries Freelancers, Small and mid-sized, Enterprise | Freelancers |
| Integrations | Chrome, Microsoft Edge, Mozilla Firefox, Opera, Google Docs, Microsoft Word, Apple Pages, LibreOffice, Gmail, Outlook, Apple Mail, Thunderbird, macOS, Windows | Not stated |
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The short version
Key Differences
- Starting price LanguageTool Free tier NovelAI Tablet $10 / month
- Free trial LanguageTool Free tier NovelAI Trial of 30 image generations, no permanent free tier
- Company size LanguageTool Freelancers, Small and mid-sized, Enterprise NovelAI Freelancers
- Output LanguageTool Spelling, grammar, punctuation and style corrections, plus AI paraphrased sentences NovelAI Long-form fiction and anime images
- Content types LanguageTool Checks and rewrites text the writer has already started rather than generating a content format; Premium raises the limit to 150,000 characters per text field, which covers blog articles, letters and long e-mails NovelAI Long-form fiction and interactive text adventure
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
LanguageTool
Strengths
- More than 30 languages and dialects in one checker
- Add-ons for browsers, Google Docs, Word, Apple Pages, LibreOffice, four mail clients and desktop apps
- Proofreading HTTP API served from Germany, with no storage of submitted text
- Source code published, so the checker can be run on your own server
Limitations
- The free tier caps the length of a single text field
- The extra Premium checks cover seven languages, not all thirty
- No editor of its own; the checker lives in add-ons and plugins
NovelAI
Strengths
- Unlimited text generation on every tier
- Lorebook, Memory and Author's Note keep a long story consistent
- Text Adventure mode for interactive fiction
- One subscription covers both the writing and the image side
Limitations
- No permanent free tier, only a trial of 30 image generations
- Context size is what the tiers gate, so a long story pushes you to the top plan
- Image generation runs on a monthly Anlas allowance rather than being unlimited
Plans
Pricing
LanguageTool
- Free $0 Basic spelling, grammar and punctuation checking with a limit on the length of a single text field.
- Premium Not stated More than 20,000 additional checks, up to 150,000 characters per text field, unlimited AI paraphrasing and a Style Guide. Billed monthly, quarterly, annually or for two years.
- Teams Not stated All Premium features plus user management, a Team Style Guide and a Team Dictionary, priced per user for 2 to 1,000 or more users.
NovelAI
- Tablet $10 Per month. Unlimited text generation and text to speech, 1,000 subscription Anlas.
- Scroll $15 Per month. Larger context than Tablet, 1,000 subscription Anlas.
- Opus $25 Per month. Context up to 28,672 tokens, 10,000 subscription Anlas, and free image generation within size and step limits.
What users say
Review Scores · opens after launch
LanguageTool
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
NovelAI
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Where this comes from
Where this comes from
LanguageTool https://languagetool.org · checked against the official source on 2026-09-09
NovelAI https://novelai.net · no check date recorded yet
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.