80
Stack Score
Editorial pick✓ Verified working
Lex
AI-powered writing app for thinking.
Try Lex✓ Free trial available
Best for
Essayists, founders, and thinkers who write to figure out what they think and want an AI that supports — not replaces — that process.
At a glance
- Pricing
- freemiumfrom $10/mo
- Setup time
- Instant
- Learning curve
- easy
- Last verified
- 5/18/2026
What we love
- ✓Cleanest writing UI of any AI writing tool
- ✓Focused on thinking through writing, not bulk content
- ✓Genuinely helpful for getting unstuck
- ✓Free tier covers most occasional writers
Where it falls short
- −Not built for SEO or marketing content production
- −No bulk content generation or templates
- −Small team — slower feature pace than Notion or Coda
Pricing
✓ Pricing verified Jun 21, 20262 tiers
Free
$0
forever
- ✓Unlimited documents
- ✓Basic AI suggestions
- ✓Limited daily AI
Pro
$10
per month, annual
- ✓Unlimited AI
- ✓Latest models (GPT/Claude)
- ✓Full collaboration
Why we picked it
Best AI writing UX I've used. The cursor-completion model is what every text editor will eventually copy.
Overview
A clean writing app where AI lives in the margins. Hit "+++" anywhere in your draft and it picks up where you left off. Less "generate a blog post," more "help me think through this paragraph."
Key features
- ●Distraction-free writing environment
- ●AI suggestions for tone, structure, and continuation
- ●"Ask Lex" — chat with your document like a writing partner
- ●Generate outline, intro, or full draft from a brief
- ●Inline rewriting and tone shifting
- ●Real-time collaboration and sharing
- ●Markdown and Google Docs export
Best use cases
Essay and thought writing
Draft long-form articles, essays, or memos with a writing partner that pushes back.
Outline to draft
Turn rough bullets into a structured first draft, then refine in your own voice.
Editing pass
Get tone, clarity, and structural feedback line by line.
Integrations
Similar tools
See all writing tools →DeepL Translator
86DeepL Translator — writing tool curated for working operators.
Surfer
85SEO content editor scoring drafts against live SERP data in real time
DeepL Write
84DeepL Write — writing tool curated for working operators.
Compare side-by-side
Lex vs DeepL Translator vs Surfer
Pros, cons, pricing, role-fit — all on one page.
Open comparison
One AI Stack pick every week.
The tool we’d pay for this week, why we’d pay for it, and what we’d skip. No promo spam.