# Grammarly vs SourcePilot

Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. SourcePilot records 51 monthly visits with -70.4% growth and Freemium, Free Trial, Paid, Contact for Pricing pricing.

| Metric | [Grammarly](https://openaitools.app/tool/grammarly) | [SourcePilot](https://openaitools.app/tool/sourcepilot) |
| :--- | :--- | :--- |
| Website URL | https://www.grammarly.com | https://sourcepilot.co |
| Categories | AI Writing Assistants, AI Writing, AI Grammar Checker, AI Text Generator | AI Writing Assistants, AI Writing, AI Assistant |
| Pricing Model | Freemium | Freemium, Free Trial, Paid, Contact for Pricing |
| Monthly Visits | 58,867,412 | 51 |
| MoM Growth Rate | -1.5% | -70.4% |
| Primary Market | United States | Italy |
| Direct Visits | 25,398,749 | 17 |
| Review Score | 4.4 | 4 |
| Saved Count | 74 | 0 |
| Supported Platforms | Website | Website |

## 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)

## SourcePilot

SourcePilot approaches AI writing assistance from an unusual angle: instead of renting you access to a cloud service, it positions itself as an editor you own. There is a Windows and macOS desktop app with a deliberately minimal interface — no cluttered panels competing with your draft — and an AI layer that runs through a model downloaded to your own machine.

That local-first design shows up in the practical details as well. The basic editor works with no account and no login at all, which makes it usable for people who do not want their drafts sitting in someone else's database. The AI features require downloading the local model, and the more advanced assistance is reserved for subscribers.

The team also ships an AI Slop Detector, a feature aimed at the specific modern problem of text that reads as generic machine output. Between that, the native performance, and the emphasis on ownership, SourcePilot is pitched at writers, researchers and knowledge workers who want AI help but are uncomfortable with the trade-offs of a fully hosted tool.

**Pricing & Plans:** Freemium with paid tiers and a free trial. The basic editor is free and requires no account; AI features require downloading a local model, and enhanced AI capabilities are tied to a subscription. A contact option exists for team or enterprise arrangements.

- **Clean, focused canvas:** The editor strips away sidebars and clutter so the page stays focused on the words you are writing.
- **Local AI assistance:** Suggestions and writing help appear when you need them, driven by a model you download rather than a remote service.
- **Native desktop performance:** It is a native desktop application, so it opens instantly and responds without the lag of a browser-based editor.
- **Ownership and privacy:** You can use the basic editor without logging in, and the AI features work through a locally downloaded model, keeping your drafts on your own machine.
- **AI Slop Detector:** A dedicated detector helps surface filler, boilerplate phrasing and generic AI-sounding passages in your drafts.

**Strengths:** Basic editor works with no account, so you can try it without committing anything; AI runs from a locally downloaded model rather than a hosted service; Native desktop build feels faster than browser-based editors; Explicit ownership stance — you keep the tool rather than renting it

**Limitations:** Currently shipped as beta builds on Windows and macOS; AI features depend on downloading a model locally, which some users will find cumbersome; Full AI functionality is behind a subscription

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

## Frequently Asked Questions

### How do Grammarly and SourcePilot compare in monthly traffic?

Grammarly has 58,867,412 monthly visits, while SourcePilot has 51. 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%; SourcePilot has -70.4%.

### 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. SourcePilot: Freemium, Free Trial, Paid, Contact for Pricing. Freemium with paid tiers and a free trial. The basic editor is free and requires no account; AI features require downloading a local model, and enhanced AI capabilities are tied to a subscription. A contact option exists for team or enterprise arrangements.

## 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 | Enterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages. | [.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 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | Provides strong multilingual grammar and style checking across apps, but offers fewer advanced generative AI features. | [.md](https://openaitools.app/tool/languagetool.md) |
| 4 | [ProWritingAid](https://openaitools.app/tool/prowritingaid-com) | 1,623,266 | +17.6% | Freemium, Paid | A storytelling toolkit that checks your grammar and coaches your craft | [.md](https://openaitools.app/tool/prowritingaid-com.md) |
| 5 | [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) |
| 6 | [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) |
| 7 | [Hemingway Editor](https://openaitools.app/tool/hemingway-editor) | 605,169 | -8.6% | Free Trial, Paid, Free | Write bolder, clearer prose with instant readability and grammar feedback | [.md](https://openaitools.app/tool/hemingway-editor.md) |
| 8 | [Type.ai](https://openaitools.app/tool/type-ai) | 567,928 | +9.4% | Freemium | The AI editor built for finishing books, screenplays and long-form stories | [.md](https://openaitools.app/tool/type-ai.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 | [Aithor](https://openaitools.app/tool/aithor) | 345,936 | +11.8% | Freemium | AI academic writer with real sources and automatic citations | [.md](https://openaitools.app/tool/aithor.md) |

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Source: https://openaitools.app/compare/grammarly-vs-sourcepilot

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