Grammarly vs Penelope AI: Which Should You Choose in 2026?
Both prices below were read from each vendor's own pricing page on the date shown.
Pricing side by side
| Plan | Grammarly | Penelope AI |
|---|---|---|
| tier 1 | $30/mo — Full-sentence rewrites, tone suggestions, 1,000 AI prompts/month | Free — Up to 500 AI completions per month, standard markdown editor, web access |
| tier 2 | $25/mo — Per member/month, team style guides, brand tones, centralized billing, SSO | $12/mo — Unlimited AI completions, advanced GPT-4o rewrite modes, PDF export, priority support |
read from both vendors' pricing pages · 22 Aug 2026 · how we verify
Choose Grammarly if
- Companies seeking uniform, error-free communication across sales, support, and marketing
- Professionals wanting real-time tone detection and conciseness suggestions across work apps
Choose Penelope AI if
- Technical writers and developers drafting markdown documentation and technical tutorials
- Long-form bloggers looking for a minimalist, distraction-free writing environment
Where each one disappoints
Grammarly
- Technical web crawling and automated sitemap extraction
Penelope AI
- E-commerce stores needing automated Shopify inventory price tracking
Compiled by Stepan Noianov from both vendors' own sites. Something wrong? Report an inaccuracy.