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.
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
One OpenAI-compatible API across image, video, chat, music and code models
| Dimension / Metric | | |
|---|---|---|
| Official Domain | grammarly.com | reapi.ai |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 58.87M (58,867,412) | 20.22K (20,221) |
| MoM Traffic Delta | -916.08K (-1.5%) | +18.18K (+888.3%) |
| Primary Market & Share | 🇺🇸 United States (51.9%) | 🇺🇦 Ukraine (30.7%) |
| Direct Visits / mo | 25.4M | 12.52K |
| User Rating | 4.4 | 4.4 |
| Supported Platforms | Website | Website |
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
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.
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.
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.
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.
One OpenAI-compatible API across image, video, chat, music and code models
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.
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.
The platform states that your requests and responses are never stored on its side, which matters for teams with data-handling obligations.
Billing runs on prepaid credits worth $0.001 each, with per-key spend caps, team budget controls and automatic refunds for failed generations.
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
SpecialistOutstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.
SpecialistOutstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.
Excels at heavy paraphrasing and text rewriting, but offers less seamless inline real-time proofreading across all apps.
Excels at heavy paraphrasing and text rewriting, but offers less seamless inline real-time proofreading across all apps.
Free / Open-sourceOne API key for hundreds of AI models from every major provider
Free / Open-sourceOne API key for hundreds of AI models from every major provider
Provides strong multilingual grammar and style checking across apps, but offers fewer advanced generative AI features.
Provides strong multilingual grammar and style checking across apps, but offers fewer advanced generative AI features.
One API key for video, image, music, and chat models
Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly.
Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly.
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write
SpecialistHighlights readability and sentence complexity visually, but lacks automated grammar correction and browser-wide extension support.
SpecialistHighlights readability and sentence complexity visually, but lacks automated grammar correction and browser-wide extension support.
Free / Open-sourceOne OpenAI-compatible API key for 500+ AI models
Free / Open-sourceOne OpenAI-compatible API key for 500+ AI models
Free / Open-sourceOne API for every generative image, video and audio model
Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides.
Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides.
