VS
Head-to-Head Comparison
Grammarly vs Windsurf
An honest, side-by-side breakdown of pricing, features, and security — so you can pick the right tool.
Feature comparison
| Feature | Grammarly | Windsurf |
|---|---|---|
| CompareMyAI score | 8.1 / 10 | 7.6 / 10 |
| Free tier | ||
| API access | ||
| Open source | ||
| Enterprise ready | ||
| GDPR compliant | ||
| SOC 2 certified | ||
| ISO 27001 | ||
| MFA supported | ||
| Trains on your data | Yes | Yes |
Pricing
G
FreeFree
Pro£10/mo
EnterpriseContact us
FreeFree
Pro£16/mo
Max£157/mo
Teams£63/mo
EnterpriseContact us
Prices in GBP. Verified monthly. Always check the provider's site for the latest.
Pros & cons
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
Windsurf
Pros
- +Agentic coding with multi-step task planning built directly into the editor
- +UK GDPR and EEA data rights confirmed in Cognition privacy policy
- +Free tier available — Devin Desktop IDE at no cost
- +Integrates VS Code and Cursor configurations out of the box
Cons
- −Rebranded from Windsurf to Devin Desktop — product identity in transition
- −Trains on user code by default — confirmed from Cognition privacy policy
- −SOC2 and ISO 27001 not confirmed from official sources
- −Pricing sourced from Cognition blog post (April 2026), not a live pricing page
Our take— Grammarly wins
Based on our comparison of published pricing, features, and compliance data, Grammarly scores 8.1/10 to Windsurf's 7.6/10. Grammarly pulls ahead with SOC 2 certification and ISO 27001 certification. Windsurf counters with GDPR compliance. Pick Grammarly if SOC 2 certification matters; pick Windsurf if GDPR compliance matters.