# Grammarly vs Overleaf Copilot

Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. Overleaf Copilot records 0 monthly visits with — growth and Freemium pricing.

| Metric | [Grammarly](https://openaitools.app/tool/grammarly) | [Overleaf Copilot](https://openaitools.app/tool/overleaf-copilot) |
| :--- | :--- | :--- |
| Website URL | https://www.grammarly.com | https://chromewebstore.google.com/detail/overleaf-copilot/eoadabdpninlhkkbhngoddfjianhlghb |
| Categories | AI Writing Assistants, AI Writing, AI Grammar Checker, AI Text Generator | AI Writing Assistants, AI Writing, AI Research Papers, Large Language Models (LLMs) |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 58,867,412 | 0 |
| MoM Growth Rate | -1.5% | — |
| Primary Market | United States | Global |
| Direct Visits | 25,398,749 | 0 |
| Review Score | 4.4 | 4.4 |
| Saved Count | 74 | 0 |
| Supported Platforms | Website | Browser Extension |

## Grammarly

Grammarly is the world's most widely deployed AI writing and communication platform, trusted by more than 40 million daily users and 50,000 organizations including Atlassian, Databricks, and Zoom. Operating as a persistent overlay across over 500,000 web applications, desktop programs (Windows and macOS), Microsoft Office, Google Docs, and iOS/Android keyboards, Grammarly analyzes text in real time to eliminate grammatical errors, streamline wordy phrasing, and calibrate tone to match the writer's intent. Following its corporate evolution under the Superhuman Platform umbrella alongside Superhuman Mail and Coda, Grammarly has expanded from a personal proofreader into an enterprise-grade proactive AI communication suite.

In 2026, Grammarly goes well beyond red-underline spellchecking with a suite of specialized AI Agents and document integrity tools. Writers can invoke purpose-built agents—including AI Grader, Citation Finder, Reader Reactions, and Paraphraser—alongside generative AI drafting directly inline where they work. To address academic and professional transparency in the generative AI era, Grammarly offers built-in Plagiarism Detection, an AI Detector, and Grammarly Authorship, which tracks how a document was constructed by automatically categorizing text as human-typed, pasted from external sources, or generated/modified with AI. For teams, Grammarly enforces organizational consistency through custom Style Guides, Brand Tones, reusable Snippets, and Knowledge Share.

Grammarly simplified its subscription structure by consolidating its legacy individual 'Premium' and team 'Business' offerings into a single unified tier: Grammarly Pro. The Free plan ($0/month) covers essential spelling, punctuation, basic tone visibility, and 100 generative AI prompts per month. Grammarly Pro is priced at $12/member/month when billed annually ($144/year) or $30/member/month when billed monthly ($60 quarterly), unlocking unlimited personalized fluency suggestions, full-sentence rewrites, tone adjustment, citation formatting, plagiarism and AI detection, 1 team style guide, and 2,000 generative AI prompts per member each month. Large organizations opt for Grammarly Enterprise (available with Superhuman Go) for unlimited AI prompts, SAML SSO, SCIM provisioning, Data Loss Prevention (DLP), and Bring Your Own Key (BYOK) encryption.

**Pricing & Plans:** Free plan ($0/month) includes core grammar and spelling checks, tone detection, and 100 generative AI prompts/month; Grammarly Pro costs $12/member/month billed annually ($144/year, or $30/month billed monthly) with full-sentence rewrites, plagiarism/AI detection, team style guides, and 2,000 AI prompts/month, while Enterprise offers custom pricing with unlimited AI prompts and BYOK security.

- **Ubiquitous Inline Rewriting & Tone Calibration:** Works natively inside Chrome, Safari, Firefox, Edge, Windows, Mac, Google Docs, MS Office, and mobile keyboards to flag grammar mistakes, rewrite tangled sentences, and shift tone toward confident, empathetic, or executive registers.
- **Specialized AI Agents (AI Grader, Citation Finder & Reader Reactions):** Deploys contextual AI agents that predict how a target audience will react to a draft, locate credible supporting citations, grade essays against rubric criteria, and generate drafts using up to 2,000 monthly prompts on Pro.
- **Grammarly Authorship, AI Detector & Plagiarism Checker:** Scans text against billions of web pages and academic databases for accidental plagiarism, detects AI-generated passages, and logs transparent document provenance via Authorship reports in Google Docs and Word.
- **Team Style Guides, Brand Tones & Knowledge Share:** Enables teams on Pro and Enterprise plans to codify company terminology, ban deprecated jargon, enforce inclusive language, insert shared Snippets, and surface internal company definitions inline.
- **Enterprise Security, DLP & Superhuman Platform Governance:** Protects organizational data with SOC 2 Type 2 attestation, SAML SSO, SCIM lifecycle management, Confidential Mode, Data Loss Prevention controls, Audit Logs API, and customer-managed BYOK encryption.

**Strengths:** Frictionless cross-platform integration works inside virtually every browser, desktop app, email client, and mobile OS without copy-pasting into a separate chatbot.; Consolidating Premium and Business into Grammarly Pro ($12/member/month annual) gives individuals and small teams access to style guides, analytics, and plagiarism/AI detection in one plan.; Grammarly Authorship provides a constructive, transparent audit trail for students and writers to demonstrate human writing integrity alongside responsible AI editing.; Mature enterprise security posture featuring BYOK encryption, Data Loss Prevention, and granular application/domain blocklists.

**Limitations:** Month-to-month billing on Grammarly Pro is steep at $30/member/month compared to the $12/member/month annual commitment ($144 billed upfront).; Core writing intelligence and style rules remain primarily optimized for English dialects (US, UK, Canadian, Australian, Indian) rather than native multilingual grammar checking.; Aggressive inline underlines and pop-up agent cards can feel visually intrusive in dense technical documents or code-heavy web editors unless muted per domain.

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

## Overleaf Copilot

Overleaf Copilot solves a very specific friction: academic writers who want ChatGPT's help with their prose, but not the copy-paste loop of opening a chat window, pasting a prompt, pasting their paragraph and pasting the result back into the LaTeX source. The extension attaches a panel to the Overleaf editor, so polishing, grammar checking and translation happen on the text you have selected, in the context of the project you are already working in.

The feature set is aimed squarely at research writing. Besides general polishing, it can follow a stated revision instruction, offers a library of academic prompts that can be shared with colleagues, provides writing suggestions for improving a draft, and handles translation with an academic register rather than a conversational one. Results are written straight to the clipboard, and both shortcuts and panel layout are configurable so the tool can fit different writing habits.

It is important to be clear about what this is: an independent third-party extension developed by a small team of computer science students, not an official Overleaf product. The developers say user content is not stored and merely passed through to the model. The free tier requires the user's own OpenAI API key, while paid tiers supply access to GPT-3.5 or GPT-4 directly. It reports around 4,000 Chrome users and a 4.8 rating across 22 reviews, and is used at 50+ universities according to the vendor.

**Pricing & Plans:** Freemium with a free trial: the Free plan costs nothing forever and uses your own OpenAI API key with practical default agents and prompts. Premium is about $3.9 (¥24.9) per 30 days for unlimited GPT-3.5 and unlimited agents, and Premium+ is about $9.9 (¥59.9) per 30 days for GPT-4 access. Payment runs through Stripe with card, Alipay and WeChat Pay support, and team licences are available on request.

- **One-click academic polishing:** Select a passage and have ChatGPT revise it in place, with the option to state the specific revisions you want.
- **Bilingual grammar checking:** Checks grammar in both English and Chinese, useful for authors writing in a second language.
- **Academic-style translation:** Translates text while preserving academic register and discipline-specific terminology rather than producing generic output.
- **Prompt library and custom prompts:** A library of curated academic prompts that you can browse, reuse and share, plus fully custom prompts for your own style.
- **Shortcuts, layout and clipboard automation:** Assign keyboard shortcuts to each function, adjust the interface layout and have results copied to the clipboard automatically.

**Strengths:** Removes the copy-paste step between ChatGPT and the LaTeX editor; Free tier works with your own OpenAI API key, so there is no mandatory spend; Academic prompt library plus fully custom prompts and shortcuts; Reports 4.8 stars from 22 ratings and use across 50+ universities

**Limitations:** Requires a paid tier or your own API key to get the most useful models; Only works inside Overleaf, so it is useless for other LaTeX setups or Word documents; Unofficial third-party tool, so long-term maintenance depends on a small independent team; Not intended for use in exams or where AI assistance is disallowed

[Profile (Markdown)](https://openaitools.app/tool/overleaf-copilot.md)

## Frequently Asked Questions

### How do Grammarly and Overleaf Copilot compare in monthly traffic?

Grammarly has 58,867,412 monthly visits, while Overleaf Copilot has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Grammarly has a month-over-month growth rate of -1.5%; Overleaf Copilot has —.

### How does pricing compare?

Grammarly: Freemium. Free plan ($0/month) includes core grammar and spelling checks, tone detection, and 100 generative AI prompts/month; Grammarly Pro costs $12/member/month billed annually ($144/year, or $30/month billed monthly) with full-sentence rewrites, plagiarism/AI detection, team style guides, and 2,000 AI prompts/month, while Enterprise offers custom pricing with unlimited AI prompts and BYOK security. Overleaf Copilot: Freemium. Freemium with a free trial: the Free plan costs nothing forever and uses your own OpenAI API key with practical default agents and prompts. Premium is about $3.9 (¥24.9) per 30 days for unlimited GPT-3.5 and unlimited agents, and Premium+ is about $9.9 (¥59.9) per 30 days for GPT-4 access. Payment runs through Stripe with card, Alipay and WeChat Pay support, and team licences are available on request.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [DeepL](https://openaitools.app/tool/deepl) | 95,110,871 | -1.7% | Freemium | Outstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker. | [.md](https://openaitools.app/tool/deepl.md) |
| 2 | [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) |
| 3 | [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) |
| 4 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | AI grammar, spelling and style checker for 30+ languages | [.md](https://openaitools.app/tool/languagetool.md) |
| 5 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | [.md](https://openaitools.app/tool/sider.md) |
| 6 | [ProWritingAid](https://openaitools.app/tool/prowritingaid-com) | 1,623,266 | +17.6% | Freemium, Paid | Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly. | [.md](https://openaitools.app/tool/prowritingaid-com.md) |
| 7 | [Paperpal](https://openaitools.app/tool/paperpal) | 1,111,641 | +1.7% | Freemium | AI academic writing assistant that edits, cites, and checks your manuscript right where you write | [.md](https://openaitools.app/tool/paperpal.md) |
| 8 | [Hemingway Editor](https://openaitools.app/tool/hemingway-editor) | 605,169 | -8.6% | Free Trial, Paid, Free | Highlights readability and sentence complexity visually, but lacks automated grammar correction and browser-wide extension support. | [.md](https://openaitools.app/tool/hemingway-editor.md) |
| 9 | [Wordtune](https://openaitools.app/tool/wordtune) | 368,771 | -5.8% | Freemium, Free Trial | Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides. | [.md](https://openaitools.app/tool/wordtune.md) |
| 10 | [HyperWrite](https://openaitools.app/tool/hyperwrite-ai) | 255,429 | +34.4% | Freemium | AI writing assistant with autocomplete, research, and a Chrome extension | [.md](https://openaitools.app/tool/hyperwrite-ai.md) |

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Source: https://openaitools.app/compare/grammarly-vs-overleaf-copilot

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