VS
Head-to-Head Comparison
Claude vs Grammarly
An honest, side-by-side breakdown of pricing, features, and security — so you can pick the right tool.
Feature comparison
| Feature | Claude | Grammarly |
|---|---|---|
| CompareMyAI score | 8.9 / 10 | 8.1 / 10 |
| Free tier | ||
| API access | ||
| Open source | ||
| Enterprise ready | ||
| GDPR compliant | ||
| SOC 2 certified | ||
| ISO 27001 | ||
| MFA supported | ||
| Trains on your data | Yes |
Pricing
FreeFree
Pro£17/mo
Team£25/mo
EnterpriseContact us
G
FreeFree
Pro£10/mo
EnterpriseContact us
Prices in GBP. Verified monthly. Always check the provider's site for the latest.
Pros & cons
Claude
Pros
- +Excellent at long-form writing and nuanced reasoning
- +Strong privacy stance with no data training on free tier
- +200K context window handles large documents
- +GDPR compliant and SOC2 certified
Cons
- −No image generation
- −Smaller plugin ecosystem than ChatGPT
- −Free tier has usage limits
Grammarly
Pros
- +SOC 2 Type II and ISO 27001 certified — strongest compliance in the writing category
- +Works across browser, desktop, Word, Google Docs, and email with one install
- +Pro tier confirmed at £10/mo in GBP — transparent UK pricing
- +Explicit opt-out from AI model training available in account settings
Cons
- −Trains on user writing by default — opt-out required
- −GDPR compliance not explicitly confirmed on accessed official pages
- −Free AI prompt limit (100/mo) may feel restrictive for daily users
Our take— Claude wins
Based on our comparison of published pricing, features, and compliance data, Claude scores 8.9/10 to Grammarly's 8.1/10. Claude pulls ahead with GDPR compliance and a no-training-on-your-data policy. Grammarly counters with ISO 27001 certification. Pick Claude if GDPR compliance matters; pick Grammarly if ISO 27001 certification matters.