Best for
Best for individuals and teams who want grammar, clarity and tone help across every app they write in.
- Freelancers
- Small and mid-sized
- Enterprise
AI Writing Comparison
Grammarly vs. Lex
At a glance
At a glance
Best for
Best for writers who want a clean editor with AI feedback built in.
- Freelancers
- Small and mid-sized
Cataleo does not name a winner. Both statements come from the vendors themselves.
Full Comparison
| Criterion | Grammarly | Lex |
|---|---|---|
| Starting price | Free tier; Pro from $12 / user / month $12 per member per month billed annually, $30 billed monthly. Enterprise is custom. | Not stated |
| Free trial | Free tier with 100 AI prompts per month | Free plan available |
| Commercial use | Yes | Yes |
| Output | Grammar, clarity and tone suggestions, plus generative AI drafts | Written documents |
| Content types | Emails, documents, business and academic writing | Documents, from quick notes to long drafts |
| Brand voice | Yes, brand tone and style guide (unlimited on Enterprise) | Yes, Style Guides learn your voice from writing samples you supply, with larger guides on the paid plan |
| Content scoring | Yes, writing performance score and tone detection | No score and no readability rating. Lex answers with written feedback on a draft, and the published feature list carries nothing that returns a number |
| Drafting tools | Yes, generative AI prompts, rewrites and tone adjustments | Yes, AI feedback on drafts, rewriting, brainstorming, word-choice commands and title suggestions |
| Templates | No preset template library; generation runs from prompts and built-in AI agents | Shared templates and prompts, on the Lex Teams add-on |
| Team workflows | Yes, team analytics, snippets and shared style guide | Yes, real-time collaboration, a comment system and version control |
| API | No public API; the Text Editor SDK for developers was discontinued in 2024 | Yes, a documented REST API |
| Deployment | Cloud (SaaS), Browser-based | Cloud (SaaS), Browser-based |
| Support | Not stated | Email helpdesk, Community forum |
| Onboarding | Not stated | Documentation and knowledge base |
| Company size | more entries Freelancers, Small and mid-sized, Enterprise | Freelancers, Small and mid-sized |
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Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.
The short version
Key Differences
- Free trial Grammarly Free tier with 100 AI prompts per month Lex Free plan available
- Company size Grammarly Freelancers, Small and mid-sized, Enterprise Lex Freelancers, Small and mid-sized
- Output Grammarly Grammar, clarity and tone suggestions, plus generative AI drafts Lex Written documents
- Content types Grammarly Emails, documents, business and academic writing Lex Documents, from quick notes to long drafts
- Brand voice Grammarly Yes, brand tone and style guide (unlimited on Enterprise) Lex Yes, Style Guides learn your voice from writing samples you supply, with larger guides on the paid plan
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
Grammarly
Strengths
- Free tier is genuinely useful for everyday writing
- Works across apps and browsers through extensions
- Brand tones and style guides keep a consistent voice
Limitations
- Generative AI is capped by monthly prompt limits
- Enterprise pricing is custom, not published
Lex
Strengths
- Distraction-free editor with AI feedback built into the document
- Real-time collaboration and comments included on the free plan
- Version control to compare alternative phrasings
Limitations
- No SEO or content-scoring features
- Fewer marketing templates than dedicated copy tools
- The largest AI models require the paid plan
Plans
Pricing
Grammarly
- Free $0 100 AI prompts per month.
- Pro $12 Per member per month billed annually. $30 billed monthly.
- Enterprise Custom Contact sales.
Lex
- Free Free Includes real-time sharing and collaboration, on smaller AI models.
- Lex Pro Not stated Access to the largest AI models, larger Style Guides, early access to new features, the iOS app and priority support.
- Lex Teams Not stated An add-on alongside Pro: unlimited documents in shared folders, plus shared templates and prompts.
What users say
Review Scores · opens after launch
Grammarly
- 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.
Lex
- 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
Grammarly https://www.grammarly.com · no check date recorded yet
Lex https://lex.page · checked against the official source on 2026-09-03
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.