Lex vs Notion AI

Tagline

The AI-powered word processor designed for modern creators to write faster, clearer, and smarter.

AI writing and knowledge assistant inside Notion

Category

Pricing

Rating

Platforms

API

Open source

Description

Lex is a collaborative, minimalist word processor equipped with powerful AI editing tools. Designed for modern creators, Lex offers features like real-time collaboration, document styling, knowledge bases, and direct feedback from advanced language models—enabling writers to streamline their drafts and elevate their writing flow.

Notion AI drafts, summarizes, and organizes content directly in your Notion workspace.

Key features

• AI Feedback
• Live Collaboration
• Style Guides
• Knowledge Bases
• Saved Prompts
• Version Control Rewind
• Document Sharing
• Title Ideas Generation
• Keyboard Shortcuts

• Voice fingerprinting
• SEO briefs
• Notion sync
• Team style guides

Pros

• It is completely free to share and collaborate on Lex documents.
• Offers privacy protections by utilizing enterprise APIs from OpenAI, Anthropic, and TogetherAI.
• Does not use user writing to train language models and provides opt-out plans if policies change.
• Allows Pro users to access advanced LLMs such as GPT 4.1 and Claude 4 Opus & Sonnet.
• Provides instant live collaboration with one-click links and no required app downloads.
• Offers style guide training to help the AI write, draft, and edit in your specific brand voice.
• Features a 'Rewind' tool to scrub through and easily restore previous versions of documents.
• Includes a monthly subscription option with a refund policy if you decide you do not use it.

• Native to your Notion workspace
• Summarize long documents
• Auto-generate action items
• Q&A across your workspace
• Writing help in every block
• Works inside Notion databases
• Multi-language support
• Simple pricing on top of Notion

Cons

• Exact pricing details for Lex Pro and Lex Teams subscriptions are not publicly listed in the provided pages.
• The heavily requested Track Changes feature is marked as 'Coming soon' and is not yet fully released.
• Access to advanced AI models and early beta features requires an upgrade to the paid Lex Pro tier.
• To get unlimited group folder capabilities, users must pay extra for a Lex Teams subscription.
• No public developer API documentation or API keys are detailed beyond a simple heading.

• Extra cost on top of Notion
• Only useful inside Notion
• Outputs can feel generic
• No brand-voice fine-tuning
• Slower than dedicated writing tools
• Depends on your page structure
• Privacy concerns for sensitive docs
• Limited advanced prompting

Pricing plans

• FreeEUR0/month
  • • For individuals to organize personal projects and life
  • • Trial AI capabilities like generating docs, or autofilling databases
  • • Basic forms
  • • Basic sites
• PlusEUR9.5/month
  • • For small teams and professionals to work together
  • • Everything in Free, and:
  • • Custom forms
  • • Custom sites
• BusinessEUR19.5/month
  • • For growing businesses to streamline teamwork
  • • Everything in Plus, and:
  • • Enterprise Search Beta
  • • Premium connections
• Enterprise—
  • • For organizations to operate with scalability, control, and security
  • • Everything in Business, and:
  • • Advanced security & controls
  • • Advanced connections
• Custom Agents—
  • • AI agents handle repetitive tasks autonomously, so your team doesn’t have to
  • • Free to try, then $10 per 1,000 monthly Notion credits

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