Skip to content

Lex vs Wordtune

A side-by-side comparison of Lex and Wordtune, two Writing tools, drawn from Ignaite's continuously-verified listings.

Compared from listings verified as of

Lex

Writing

AI-native collaborative document editor for serious writers.

View Lex

Wordtune

Writing

AI rewriting and paraphrasing assistant from AI21 Labs.

View Wordtune

At a glance

Feature comparison of Lex and Wordtune
AttributeLexWordtune
CategoryWritingWriting
PricingFREEMIUMFREEMIUM
LicenseProprietaryProprietary
DeploymentCloudCloud
Platforms (differs)WebWeb, Browser extension, iOS
Model support (differs)Multi-modelSingle model (proprietary)
Vendor (differs)LexAI21 Labs
Capabilities (differs)
  • Long-form writing
  • Editing / grammar
  • Editing / grammar
  • Summarization
  • Translation

The honest brief

Lex

Frontier models inside a focused Google-Docs-style writing surface — pick premium models in the doc, not a sidebar.

  • Clean, distraction-free doc editor
  • Premium model choice (Claude/GPT)
  • Real-time collaboration + versions
  • AI feedback and rewriting inline
  • Web-only
  • Premium models behind Pro tier
  • Narrow long-form focus

Wordtune

From AI21 Labs (Jurassic/Jamba models) — a rewriting tool whose maker owns its own LLMs, not a GPT wrapper.

  • Tone-controlled rewriting
  • Article and video summarization
  • Gmail and Slack integration
  • Browser, web and iOS
  • AI-text humanizer
  • Narrower than full writing suites
  • Free tier rewrite limits
  • Less grammar depth than Grammarly
  • No Android app

When to pick which

Both cover Editing / grammar.

Pick Lex if you need Long-form writing.

  • Long-form writing (primary capability)

Pick Wordtune if you need Summarization and Translation.

  • Summarization (secondary capability)
  • Translation (secondary capability)

They also differ on:

Platforms
Web · Web, Browser extension, iOS
Model support
Multi-model · Single model (proprietary)