# Grammarly vs Phantomwriter

Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. Phantomwriter records 32 monthly visits with -97.6% growth and Paid pricing.

| Metric | [Grammarly](https://openaitools.app/tool/grammarly) | [Phantomwriter](https://openaitools.app/tool/phantomwriter) |
| :--- | :--- | :--- |
| Website URL | https://www.grammarly.com | https://phantomwriter.io |
| Categories | AI Writing Assistants, AI Writing, AI Grammar Checker, AI Text Generator | AI Social Media Post Generator, AI Writing, Undetectable AI, AI Social Media |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 58,867,412 | 32 |
| MoM Growth Rate | -1.5% | -97.6% |
| Primary Market | United States | Global |
| Direct Visits | 25,398,749 | 12 |
| Review Score | 4.4 | 3.8 |
| 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)

## Phantomwriter

Phantomwriter targets founders, consultants, agencies and ghostwriters who know consistent LinkedIn posting works but cannot sustain the time or cost of doing it manually. The pitch is blunt: replace a costly human ghostwriter or a generic chatbot with a purpose-built writer that understands LinkedIn as a format. Onboarding starts by analysing your audience, industry trends, competitors and ideal customer profile.

From that input, Phantomwriter produces post ideas with growth potential instead of blank-page prompts. You then generate drafts that are designed to avoid the tell-tale AI voice, regenerate them without limits when they miss, and place them into a content calendar to manage the whole publishing schedule. Posts can be generated in any language, and the platform also includes a lead magnet creator. The team notes that you still publish the posts yourself.

Pricing is tiered: a Standard plan at $49 per month covering one LinkedIn account with 40 monthly posts, and a Pro plan at $200 per month for teams and agencies with unlimited monthly posts. An annual billing option discounts roughly 50%. Core features such as idea generation, unlimited regeneration, multi-language output and the content calendar are included on both tiers.

**Pricing & Plans:** Standard is $49/month for one LinkedIn account and 40 posts per month; Pro is $200/month with unlimited posts for teams and agencies. Annual billing takes about 50% off. Both tiers include idea generation, unlimited regeneration, any-language output and the content calendar.

- **Audience and competitor analysis:** Phantomwriter studies your industry trends, competitors and ideal customer profile so generated content targets the people you actually want to reach.
- **Tailored post idea generation:** Get specific post angles with growth potential instead of starting from a blank page, with unlimited regeneration when an idea misses.
- **AI ghostwriting:** Drafts are written to sound like a person, directly addressing the obvious AI-generated tone that hurts engagement.
- **Content calendar:** Plan, schedule and manage your full posting cadence in one place so you publish consistently rather than in bursts.
- **Lead magnet creator:** Build supporting lead magnets alongside your posts to convert readers into leads, not just impressions.

**Strengths:** Purpose-built for LinkedIn rather than a repurposed generic chatbot; Idea generation plus drafting plus scheduling covers the whole workflow in one tool; Pro tier is genuinely unlimited, which suits agency volume; Annual discount of around 50% meaningfully lowers the effective monthly cost

**Limitations:** You still have to publish and engage on LinkedIn yourself, so it is not fully hands-off; The pricing page URL returns a 404, so plan details can only be found on the homepage; Undetectable-AI positioning is a marketing claim rather than something verified independently

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

## Frequently Asked Questions

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

Grammarly has 58,867,412 monthly visits, while Phantomwriter has 32. 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%; Phantomwriter has -97.6%.

### 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. Phantomwriter: Paid. Standard is $49/month for one LinkedIn account and 40 posts per month; Pro is $200/month with unlimited posts for teams and agencies. Annual billing takes about 50% off. Both tiers include idea generation, unlimited regeneration, any-language output and the content calendar.

## 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 | Excels at heavy paraphrasing and text rewriting, but offers less seamless inline real-time proofreading across all apps. | [.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 | Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly. | [.md](https://openaitools.app/tool/prowritingaid-com.md) |
| 5 | [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) |
| 6 | [Planable](https://openaitools.app/tool/planable) | 701,915 | -7.7% | Freemium | Plan, approve and schedule social content with your whole team in one place | [.md](https://openaitools.app/tool/planable.md) |
| 7 | [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) |
| 8 | [Taplio](https://openaitools.app/tool/taplio) | 499,362 | +25.7% | Free Trial | Grow your LinkedIn presence with an AI coach for writing, scheduling and outreach | [.md](https://openaitools.app/tool/taplio.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-phantomwriter

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