# Decopy AI vs Lex

Decopy AI records 1,256,528 monthly visits with -11% month-over-month growth and Free pricing. Lex records 24,323 monthly visits with -57.1% growth and Freemium pricing.

| Metric | [Decopy AI](https://openaitools.app/tool/decopy-ai) | [Lex](https://openaitools.app/tool/lex) |
| :--- | :--- | :--- |
| Website URL | https://decopy.ai | https://lex.page |
| Categories | AI Writing, AI Content Detector, Humanizer AI, AI Summarizer | AI Writing, AI Writing Assistants, AI Copilot, AI Rewriter |
| Pricing Model | Free | Freemium |
| Monthly Visits | 1,256,528 | 24,323 |
| MoM Growth Rate | -11% | -57.1% |
| Primary Market | Russia | United States |
| Direct Visits | 301,144 | 14,650 |
| Review Score | 3.8 | 1.8 |
| Saved Count | 3 | 0 |
| Supported Platforms | Website | Website |

## Decopy AI

Decopy AI is an all-in-one writing and study workspace rather than a single-purpose tool. Its best-known utility is an AI content detector that flags text produced by models such as ChatGPT, GPT-4 and Claude, including paraphrased or lightly humanized passages, and it pairs that with a humanizer that rewrites mechanical output into more natural prose. Around those two sit a summarizer, a paraphraser, a grammar checker, a plagiarism-style originality check and a story generator.

The platform reaches well beyond plain text. It accepts PDFs, Word and PowerPoint files for summarization, extracts text from images with OCR, transcribes and summarizes audio, and handles YouTube links and uploaded videos by producing transcripts, subtitles and key takeaways. A study section covers step-by-step math solving, flashcards and homework help across subjects, which explains its popularity with students.

Decopy AI markets itself as free with no login required for core tasks, and it emphasises that uploaded content is used only for the requested job and that users keep ownership of their work. Outputs can be reviewed, edited, saved to History or Favorites, or deleted. The service runs entirely in the browser, so there is nothing to install.

**Pricing & Plans:** Free to use, with no login required for the core detection, summarization and plagiarism checks according to the site.

- **AI content detection:** Scores text for likely AI authorship from models such as ChatGPT, GPT-4 and Claude, including paraphrased or humanized variants.
- **AI humanizer:** Rewrites stiff, machine-sounding drafts into more natural phrasing without changing the underlying meaning.
- **Multi-format summarization:** Condenses articles, PDFs, Word documents, PowerPoint decks, audio recordings, video files and YouTube links into key points.
- **Paraphrase, grammar and rewriting:** Reworks sentences for clarity, fixes awkward wording and offers alternative phrasings in a few clicks.
- **Study and math helpers:** Solves math problems step by step, generates flashcards and worksheets, and turns notes or videos into study material.

**Strengths:** Wide toolset in one place, from detection to summarization to math; Handles text, documents, images, audio and video inputs; Free to use with no login needed for the headline features; Clear privacy stance that users retain ownership of their uploads

**Limitations:** AI-detector verdicts are probabilistic and can produce false positives; The site promotes using it to bypass Turnitin, which raises academic-integrity concerns; Heavy all-in-one pages can feel cluttered when you just want one utility

[Profile (Markdown)](https://openaitools.app/tool/decopy-ai.md)

## Lex

Lex is built around a simple premise: the editor should stay out of the way while the AI does useful work at the moment you need it. The interface is deliberately minimal and keyboard-driven, so you write in a distraction-free document rather than assembling blocks in a page builder. Sitting alongside the text is an AI layer that can critique your draft, brainstorm directions, rewrite a sentence or paragraph, and generate title ideas on demand.

For anything longer than a quick note, Lex behaves like a proper collaborative document tool. You can share a link so a collaborator logs in with a single click and types alongside you, leave comments navigated by keyboard shortcuts, and switch between versions to try a different phrasing without losing what you had. Publishing sends a read-only link for readers, and mobile web access means a shared link works without anyone installing an app.

One practical note for anyone evaluating it today: Lex currently displays a notice stating it is no longer accepting new customers, while existing accounts continue to work as usual. If you are already using Lex, the product is operational. If you are new, you may not be able to sign up right now.

**Pricing & Plans:** Lex has operated on a freemium model with free and paid tiers; the site currently states it is no longer accepting new customers, so new signups may not be available. Existing accounts keep working and pricing details remain published on the site.

- **AI feedback on your draft:** Ask the built-in assistant to critique a passage, brainstorm alternatives or rewrite something, without leaving the document.
- **One-click commands:** Keyboard-driven AI shortcuts find the better word, expand a bullet into prose or generate a list of ideas in place.
- **Comments and versions:** Threaded comments navigated by shortcut plus saved versions, so you can try a different way of saying something without losing the original.
- **Live collaboration and publishing:** Share a link for one-click co-editing in real time, or send a read-only link so others can simply read the finished piece.
- **Title generation:** Request a batch of title options from the AI and pick the strongest headline instead of agonising over the first line.

**Strengths:** Genuinely minimal, keyboard-first editor that stays out of the way of writing; AI assistance is embedded in the document rather than living in a separate chat window; Proper collaboration features: live co-editing, comments, versions and read-only publishing links; Works on mobile web through a shared link, so collaborators install nothing

**Limitations:** The site currently states Lex is no longer accepting new customers, so new users may be unable to sign up; Track changes was still listed as coming soon, so review workflows are less complete than a full office suite; AI features focus on wording and feedback rather than deep research or data analysis

[Profile (Markdown)](https://openaitools.app/tool/lex.md)

## Frequently Asked Questions

### How do Decopy AI and Lex compare in monthly traffic?

Decopy AI has 1,256,528 monthly visits, while Lex has 24,323. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Decopy AI has a month-over-month growth rate of -11%; Lex has -57.1%.

### How does pricing compare?

Decopy AI: Free. Free to use, with no login required for the core detection, summarization and plagiarism checks according to the site. Lex: Freemium. Lex has operated on a freemium model with free and paid tiers; the site currently states it is no longer accepting new customers, so new signups may not be available. Existing accounts keep working and pricing details remain published on the site.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Paraphrase, proofread and summarize text with an AI writing workspace | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) |
| 2 | [ZeroGPT](https://openaitools.app/tool/zerogpt) | 32,864,541 | +19.7% | Freemium, Paid | Provides robust AI detection and text humanization utilities, focusing heavily on academic and content integrity. | [.md](https://openaitools.app/tool/zerogpt.md) |
| 3 | [GPTZero](https://openaitools.app/tool/gptzero-me) | 23,246,989 | +32.5% | Freemium, Paid | Industry-standard AI detection and verification platform, prioritizing educator accuracy over broad general writing tools. | [.md](https://openaitools.app/tool/gptzero-me.md) |
| 4 | [Scribbr](https://openaitools.app/tool/scribbr) | 7,530,803 | +14.6% | Freemium | Academic proofreading, plagiarism checking and AI-powered writing tools in one place | [.md](https://openaitools.app/tool/scribbr.md) |
| 5 | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) | 3,113,403 | +17.5% | Freemium | Offers powerful AI text humanization and detection features, though pricing and output limits differ. | [.md](https://openaitools.app/tool/undetectable-ai.md) |
| 6 | [StealthWriter](https://openaitools.app/tool/stealthwriter) | 2,887,114 | +15.5% | Freemium | Strong focus on aggressive AI text humanization, though it offers fewer secondary writing and grammar tools. | [.md](https://openaitools.app/tool/stealthwriter.md) |
| 7 | [Originality.ai](https://openaitools.app/tool/originality) | 2,049,639 | +2.8% | Paid | Comprehensive content integrity suite featuring advanced AI detection and plagiarism checking for professional publishers. | [.md](https://openaitools.app/tool/originality.md) |
| 8 | [Jenni](https://openaitools.app/tool/jenni) | 1,498,133 | +5.2% | Freemium | The AI workspace where researchers read, write, and cite with every claim traceable to its source | [.md](https://openaitools.app/tool/jenni.md) |
| 9 | [Phrasly](https://openaitools.app/tool/phrasly-ai) | 1,209,985 | +17.9% | Freemium, Subscription | Provides targeted AI humanization and rewriting features designed to bypass strict detection algorithms. | [.md](https://openaitools.app/tool/phrasly-ai.md) |
| 10 | [GPTinf](https://openaitools.app/tool/gptinf-com) | 674,246 | +25.8% | Freemium, Free Trial, Paid | Humanize AI text and detect it — one clean, all-in-one writing suite | [.md](https://openaitools.app/tool/gptinf-com.md) |

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Source: https://openaitools.app/compare/decopy-ai-vs-lex

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