# Grammarly vs Roundtable (Proof of Human)

Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. Roundtable (Proof of Human) records 854 monthly visits with -60.5% growth and Contact for Pricing pricing.

| Metric | [Grammarly](https://openaitools.app/tool/grammarly) | [Roundtable (Proof of Human)](https://openaitools.app/tool/roundtable) |
| :--- | :--- | :--- |
| Website URL | https://www.grammarly.com | https://www.roundtable.ai |
| Categories | AI Writing Assistants, AI Writing, AI Grammar Checker, AI Text Generator | AI Detector, AI Checker, AI Models |
| Pricing Model | Freemium | Contact for Pricing |
| Monthly Visits | 58,867,412 | 854 |
| MoM Growth Rate | -1.5% | -60.5% |
| Primary Market | United States | United States |
| Direct Visits | 25,398,749 | 336 |
| Review Score | 4.4 | 3.9 |
| 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)

## Roundtable (Proof of Human)

Roundtable began as an AI-powered fraud prevention platform and now operates under the name Proof of Human (Proof of Human, PBC). The roundtable.ai domain redirects to poh.org, and the site explicitly describes the company as formerly Roundtable AI, so the underlying product and team remain active — simply under a new brand and mission framing as a public benefit corporation.

The core of the product is an invisible verification API. Instead of asking users to solve puzzles, it watches how they interact with a page: how they type, where the mouse travels, how they scroll, whether they paste text or leave typos uncorrected, and how their clicks land. Those signals roll into a live behavioral profile that distinguishes real humans from scripts, bots and increasingly capable AI agents. Verification is continuous rather than a one-time gate.

Because the approach is behavioral rather than identity-based, the company emphasizes privacy: no PII is collected and no cross-site tracking is performed. Integration is a single script with a site key and user ID, and the platform reports millions of sessions processed each month with sub-200ms latency backed by SLA guarantees.

Use cases cluster around market research (verifying panel respondents), financial services (account creation and high-risk transactions), ticketing and live events (stopping scalper bots), and general fraud, bot and account takeover prevention. Pricing is quote-based and available by contacting sales or booking a demo.

**Pricing & Plans:** Roundtable (Proof of Human) does not publish public price tiers; pricing is quote-based and available on request. Prospective customers are directed to book a demo or email the sales team to discuss enterprise pricing and volume.

- **Invisible, Frictionless Verification:** Proof of Human runs silently behind login and checkout flows, scoring behavior in under 200 milliseconds without CAPTCHAs or friction for real people.
- **Continuous Behavioral AI:** Continuous behavioral models look for programmatic typing, teleporting mouse movement, jump scrolling, centered clicks and pasted text to catch bots and AI agents mid-session.
- **Privacy-Preserving by Design:** The service states it collects no PII and does no cross-site tracking, helping teams meet compliance and privacy requirements.
- **Effortless Integration:** A single script tag with a site key and user ID is enough to begin verifying sessions, and results include an example session report with explainable signals.
- **Enterprise-Scale Performance:** The platform reports millions of sessions processed monthly and near-instant API latency with SLA guarantees, suited to high-traffic consumer flows.

**Strengths:** No CAPTCHAs, popups or friction for genuine users; Continuous behavioral scoring rather than a one-time human check; Detects modern AI agents as well as classic bots; Privacy-preserving: no PII and no cross-site tracking

**Limitations:** Pricing is quote-based, so buyers cannot self-serve or compare costs upfront; Enterprise buyers must go through a demo and sales process; Continuous behavioral verification can raise privacy review questions before deployment; Previewed prices and plans are not published on the site

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

## Frequently Asked Questions

### How do Grammarly and Roundtable (Proof of Human) compare in monthly traffic?

Grammarly has 58,867,412 monthly visits, while Roundtable (Proof of Human) has 854. 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%; Roundtable (Proof of Human) has -60.5%.

### 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. Roundtable (Proof of Human): Contact for Pricing. Roundtable (Proof of Human) does not publish public price tiers; pricing is quote-based and available on request. Prospective customers are directed to book a demo or email the sales team to discuss enterprise pricing and volume.

## 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 | [ZeroGPT](https://openaitools.app/tool/zerogpt) | 32,864,541 | +19.7% | Freemium, Paid | AI content detection and a full writing toolkit in one place | [.md](https://openaitools.app/tool/zerogpt.md) |
| 4 | [GPTZero](https://openaitools.app/tool/gptzero-me) | 23,246,989 | +32.5% | Freemium, Paid | AI detection and writing verification built for schools and editors | [.md](https://openaitools.app/tool/gptzero-me.md) |
| 5 | [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) |
| 6 | [hCaptcha](https://openaitools.app/tool/hcaptcha-com) | 5,446,045 | +18.7% | Freemium, Free Trial, Contact for Pricing, Free | Privacy-first bot detection and fraud prevention for the web | [.md](https://openaitools.app/tool/hcaptcha-com.md) |
| 7 | [Branded](https://openaitools.app/tool/gobranded-com) | 3,704,728 | +6.6% | Contact for Pricing | Targeted research audiences with AI-verified data quality | [.md](https://openaitools.app/tool/gobranded-com.md) |
| 8 | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) | 3,113,403 | +17.5% | Freemium | Detect, humanize and verify AI content in one place | [.md](https://openaitools.app/tool/undetectable-ai.md) |
| 9 | [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) |
| 10 | [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) |

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

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