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Lex

Collaborative word processor with built-in AI editing

Free plan · from $14.99/moWritingChecked Oct 5, 2026
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Lex, as pictured on lex.page
How Lex presents itself. Image from lex.page.

What is Lex?

Lex is a browser-based word processor with AI editing built in. Ask Lex is a chat panel that gives feedback on a draft using an AI model the writer picks, and Checks marks line-level edits for brevity, grammar and readability inside the document. Documents can be shared by link for live co-editing and comments, and the free plan covers writing and collaboration with daily limits on AI use.

Lex has a free plan. Paid plans start at $14.99 per month, billed yearly ($179.88). See every plan

Good for

  • Writers who want AI feedback on a draft instead of generated text
  • People looking for a simpler shared-document editor with AI built in
  • Trying several AI models on the same piece without separate subscriptions

Worth knowing

  • Free accounts get 30 Ask Lex messages a day, 5 saved-prompt runs a month and a small daily AI budget; premium models need Lex Pro.
  • Lex Pro's AI use is metered: the plan includes $30 of AI credits a month, and heavier use can be covered by overage credits sold at cost.
  • Lex runs in a desktop or mobile browser. An iOS app is offered to Pro subscribers as early access, and no desktop app is listed.
  • Track changes is marked as coming soon on the homepage.

Key features

Ask Lex
A chat panel for feedback, rewrites and brainstorming on the open document. Highlighting text, or tagging @Lex in a comment, asks about one passage. The AI model can be switched.
Checks
Runs line edits for brevity, grammar, readability and more, shown as highlights in the document. Clicking one shows the suggested edit and the reason for it.
Custom prompts and context
Saved prompts can be reused in Ask Lex and Checks and shared with others. Style guides and knowledge bases give the AI a voice to follow and background to draw on.
Versions and Rewind
Versions are named save points for trying another approach. Rewind is a timeline at the top of a document for scrubbing through past changes and restoring an earlier state.
Live collaboration and comments
A shared link gives edit or view-only access, with co-editing in real time and comment threads. Lex Teams is a paid add-on for unlimited group use of shared folders.
Export and API
Documents export to Word, PDF, Markdown, HTML and LaTeX, and an API can create, list and update documents with a key generated in settings.

Lex pricing

Starts at
$14.99 per month, billed yearly ($179.88)
Free plan
Writing, sharing and live collaboration, with AI limited to 30 Ask Lex messages a day, 5 saved-prompt runs a month and a small daily AI processing budget.
Free trial
7-day free trial on the yearly Lex Pro plan; payment details are collected at checkout.
Free$0Documents, sharing and live collaboration with 30 Ask Lex messages a day, 5 saved-prompt runs a month and a small daily AI budget.
Lex Pro$14.99per month, billed yearly ($179.88); $24.99 billed monthlyPremium AI models, $30 of included AI credits a month, much higher usage limits, priority support, early access to new features and a money-back guarantee.

Read from lex.page on Oct 5, 2026. Prices change, so confirm with Lex before you buy.

Pricing in detail

Ways to pay less

  • Annual discount40% less with yearly billing

    Lex Pro billed yearly is $179.88, which works out to $14.99 a month against $24.99 when billed monthly.

    Stated on lex.page
  • EducationDiscounted pricing for students and academics

    Lex says it offers discounted pricing for students and academics, arranged by emailing the company. The size of the discount is not published.

    Stated on lex.page
  • NonprofitDiscounted pricing for nonprofits

    Lex says it offers discounted pricing for nonprofit organizations, arranged by emailing the company. The size of the discount is not published.

    Stated on lex.page

Works with

  • Kit

Lex alternatives

All Lex alternatives comparedAll writing tools

Common questions

Is Lex free?

Lex has a free plan. Writing, sharing and live collaboration, with AI limited to 30 Ask Lex messages a day, 5 saved-prompt runs a month and a small daily AI processing budget. Paid plans start at $14.99 per month, billed yearly ($179.88).

How much does Lex cost?

Lex lists 2 plans. Free: $0. Lex Pro: $14.99 per month, billed yearly ($179.88); $24.99 billed monthly. Prices were read from lex.page on Oct 5, 2026.

What platforms does Lex work on?

Lex is available on Web.

Does Lex offer any discounts?

Lex publicly lists the following: 40% less with yearly billing; Discounted pricing for students and academics; Discounted pricing for nonprofits.

Does Lex have an Android app?

No Android app was listed when its pages were read on Oct 5, 2026. Lex is listed for Web.

Does Lex have an iPhone app?

No iPhone app was listed when its pages were read on Oct 5, 2026. Lex is listed for Web.

Is Lex open source?

Lex is not described as open source on its own site, as read on Oct 5, 2026.

Does Lex have an API?

Yes. Lex offers a public API, according to its own site.

What does Lex integrate with?

Lex's listing names Kit. A listing names up to eight integrations, so it may connect to more.

Does Lex have a student discount?

Discounted pricing for students and academics. Lex says it offers discounted pricing for students and academics, arranged by emailing the company. The size of the discount is not published.

Does Lex have a free trial?

Yes. 7-day free trial on the yearly Lex Pro plan; payment details are collected at checkout.

Who makes Lex?

Lex is made by Lex, Inc.

What are the alternatives to Lex?

The closest alternatives to Lex in our directory are Type.ai, Google Docs, Grammarly, HyperWrite and Wordtune. Each one has a side-by-side comparison with Lex.

Sources for this page

The prices, plans, platforms and features above were read from these pages on Oct 5, 2026.