Lex Review, Pricing, Features & 56 Alternatives 2026

Q: What is the benefit of upgrading to Lex Pro?

You get access to the biggest and best AI models like GPT-4.1 and Claude 4 Opus & Sonnet. These produce noticeably better writing quality. You also get early access to new features and priority email support.

Q: Is my writing used to train the AI?

No. Lex uses models from OpenAI, Anthropic, and TogetherAI through enterprise APIs. These have stronger privacy protections than consumer accounts. Lex pays for that additional privacy on your behalf.

Overview

レックス is a collaborative document editor that combines real-time writing with AI editing tools. It lets you write, get AI feedback, rewrite sections, and generate title ideas without leaving the document. Over 300,000 marketers and writers use it as a Google Docs replacement with better AI integration.

判決： A solid choice for writers who want AI help without switching between tools, though the free tier's AI models are noticeably weaker than the premium ones.

価格モデルフリーミアム

請求月額

月間訪問数 63,2722026年6月25日時点

上位国

代替案 56利用可能

Lexは、執筆中の場所にAIツールを直接配置するドキュメントエディタです。見た目や操作感はGoogle Docsに似ていますが、サイドバーからAIに下書きのレビュー、段落の書き直し、タイトルの提案を依頼できます。SparkToroなどの企業のマーケターを含む30万人以上が利用しています。

このツールは、マーケティングコピー、学術論文、小説、メールなど、真剣に執筆・編集を行うすべての人のために設計されています。無料プランでは基本的なAIモデルが利用できます。有料プランにアップグレードすると、GPT-4.1とClaude 4 Opusが利用可能になり、顕著に優れた結果が得られます。また、新機能への早期アクセスと優先サポートも受けられます。

Lexの際立った点は、AIがシームレスに統合されていることです。ChatGPTとドキュメントの間でコピー＆ペーストする必要はありません。すべてが一か所で完結します。コラボレーションはスムーズで、バージョン履歴により自由に試行錯誤できます。主な欠点は、モバイル体験が限られていること（ネイティブアプリは未対応）と、近日対応予定とされている変更履歴機能がないことです。AIが組み込まれた集中できる執筆環境を求めるチームにとって、Lexは有力な選択肢です。

Key Features

AI Feedback

Ask the AI to review your draft, brainstorm ideas, or rewrite any section.

Live Collaboration

Share a link and see others typing in real time with no app download needed.

Version History

Try different versions of your text without losing the original draft.

Title Ideas

Generate a list of good title suggestions with one click.

Publishing

Share a read-only link so readers can view your finished document.

Keyboard Commands

Use handy AI shortcuts to find the best word or generate ideas quickly.

Pricing Freemium

無料

$0

Basic AI models
Standard collaboration
制限付き機能

最も人気

Lex Pro

月額課金

Access to GPT-4.1 and Claude 4 Opus & Sonnet
新機能への早期アクセス
優先メールサポート
Better AI writing quality

Lex Teams

Paid add-on

Unlimited group use of Lex folders
チーム協力機能

Pros & Cons

Pros

Clean, minimal interface that reduces distractions while writing
Access to top-tier AI models including GPT-4.1 and Claude 4 Opus
Real-time collaboration works smoothly with no app download needed
Version history lets you experiment without losing work
AI can generate title ideas with a single click

Cons

Free tier only includes basic AI models, which feel noticeably weaker
No track changes feature yet (listed as coming soon)
Mobile experience is limited to the mobile web version — no dedicated iOS or Android app yet

Frequently Asked Questions

What is the benefit of upgrading to Lex Pro?

You get access to the biggest and best AIモデル like GPT-4.1 and Claude 4 Opus & Sonnet. These produce noticeably better writing quality. You also get early access to new features and priority email support.

Is Lex secure and private?

Yes. All your data is hosted on Lex's own database with strict access policies. The team will always ask for your explicit permission before accessing your documents.

Is my writing used to train the AI?

No. Lex uses models from OpenAI, アンソロピック, and TogetherAI through enterprise APIs. These have stronger privacy protections than consumer accounts. Lex pays for that additional privacy on your behalf.

Can I use Lex with my team for free?

Yes. Sharing and collaborating on documents is free. If you want unlimited group use of Lex folders, you can add a Lex Teams subscription.

返金はありますか？

Yes. If you don't love Lex after a month, you can reach out and get a refund.