# Grammarly vs reAPI

Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. reAPI records 20,221 monthly visits with +888.3% growth and Paid pricing.

| Metric | [Grammarly](https://openaitools.app/tool/grammarly) | [reAPI](https://openaitools.app/tool/reapi) |
| :--- | :--- | :--- |
| Website URL | https://www.grammarly.com | https://reapi.ai |
| Categories | AI Writing Assistants, AI Writing, AI Grammar Checker, AI Text Generator | AI API, Large Language Models (LLMs), AI Image Generator, AI Video Generator |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 58,867,412 | 20,221 |
| MoM Growth Rate | -1.5% | +888.3% |
| Primary Market | United States | Ukraine |
| Direct Visits | 25,398,749 | 12,516 |
| Review Score | 4.4 | 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)

## reAPI

Most teams building with generative AI end up integrating the same capability several times over: one client for chat, another for images, another for video, each with its own authentication scheme, retry semantics, rate-limit behaviour and billing relationship. reAPI's proposition is that these should collapse into one integration. Your existing OpenAI-style client library keeps working; you change the model name in the request to route to a different vendor, and reAPI handles vendor selection, failover and routing behind the curtain.

The models on offer span image generation (GPT Image, Nano Banana, Seedream, FLUX, Midjourney), video (Seedance, Veo, Kling, Vidu, MiniMax, Grok Imagine), language models (Claude, Gemini, GPT, DeepSeek, GLM, Kimi), music and audio tools (Suno, Mureka, vocal and stem utilities) and a set of text utilities such as humanising and AI-text detection. reAPI states its rates are below the vendors' published list prices — for example it lists GPT Image 2 1K at $0.004 per image against an official $0.219 — although any individual figure should be checked on their live page before you plan a budget around it.

Operationally, the platform markets 99.96% uptime with sub-second failover: if one upstream provider degrades, the request is re-routed to a redundant vendor rather than failing. Requests and responses are not stored on reAPI's side. Spending is controlled through prepaid credits (1 credit = $0.001) with per-key spend caps and team budget controls, plus region pinning to route traffic through EU, US or APAC data regions. Failed generations are refunded automatically. There is a playground for testing models before wiring them into production, plus documentation, guides and an MCP server for AI agents.

**Pricing & Plans:** Paid, credit-based, pay-as-you-go. You top up a prepaid balance where 1 credit equals $0.001 and pay only for calls you make — only completed generations are billed, and failed ones are refunded. Model rates are listed per call, per second or per 1M tokens depending on the model. Per-key spend caps and team budgets are available for cost control.

- **One unified endpoint:** Reach image, video, chat, music and code models from many vendors through a single API key and an OpenAI-compatible request shape, so existing client code keeps working.
- **Automatic failover and routing:** reAPI handles vendor selection and re-routes requests to a redundant provider when one degrades, which the company positions as sub-second failover behind a 99.96% uptime claim.
- **Zero request logging:** The platform states that your requests and responses are never stored on its side, which matters for teams with data-handling obligations.
- **Credit-based spend control:** Billing runs on prepaid credits worth $0.001 each, with per-key spend caps, team budget controls and automatic refunds for failed generations.
- **Region pinning:** Route traffic through EU, US or APAC data regions to align with latency targets and data residency requirements.
- **Playground, docs and MCP server:** Test models in a browser playground, read model-specific docs and pricing, and connect agents through a provided MCP server.

**Strengths:** A single OpenAI-compatible integration covers image, video, language, music and code models; Automatic failover and redundant routing reduce the blast radius of any one provider going down; Credit-based prepaid billing with per-key caps makes spend predictable and auditable; Stated rates sit below vendors' published list prices, with failed generations refunded

**Limitations:** You are trusting a middle layer between your application and the underlying model vendors; Published figures move quickly as new models launch, so pricing must be re-checked before committing to a budget; Costs are quoted per image, per second or per million tokens depending on the model, which takes effort to forecast accurately

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

## Frequently Asked Questions

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

Grammarly has 58,867,412 monthly visits, while reAPI has 20,221. 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%; reAPI has +888.3%.

### 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. reAPI: Paid. Paid, credit-based, pay-as-you-go. You top up a prepaid balance where 1 credit equals $0.001 and pay only for calls you make — only completed generations are billed, and failed ones are refunded. Model rates are listed per call, per second or per 1M tokens depending on the model. Per-key spend caps and team budgets are available for cost control.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [OpenAI Platform](https://openaitools.app/tool/openai) | 234,678,639 | -9.6% | Paid | Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents. | [.md](https://openaitools.app/tool/openai.md) |
| 2 | [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) |
| 3 | [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) |
| 4 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | One API key for hundreds of AI models from every major provider | [.md](https://openaitools.app/tool/openrouter-ai.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 | [Kie.ai](https://openaitools.app/tool/kie-ai-affordable-secure-deepseek-r1-api) | 2,275,553 | -22.4% | Pay-as-you-go | One API key for video, image, music, and chat models | [.md](https://openaitools.app/tool/kie-ai-affordable-secure-deepseek-r1-api.md) |
| 7 | [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) |
| 8 | [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) |
| 9 | [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) |
| 10 | [CometAPI](https://openaitools.app/tool/cometapi) | 602,966 | +49.7% | Pay-as-you-go (credits) | One OpenAI-compatible API key for 500+ AI models | [.md](https://openaitools.app/tool/cometapi.md) |

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

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