VS
Head-to-Head Comparison
Grammarly vs Devin
An honest, side-by-side breakdown of pricing, features, and security — so you can pick the right tool.
Feature comparison
| Feature | Grammarly | Devin |
|---|---|---|
| CompareMyAI score | 8.1 / 10 | 7.8 / 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
Devin
Pros
- +Plans, writes, tests, and ships production code autonomously — confirmed from official product description
- +UK GDPR and EEA data rights confirmed in Cognition privacy policy with UK IDTA in use
- +Free tier available with selected features — no card required to start
- +Integrates with existing codebases and tools including Devin Desktop (formerly Windsurf) IDE
Cons
- −Trains on user code and content by default — confirmed from Cognition privacy policy
- −SOC2 and ISO 27001 not confirmed from official sources
- −Max plan (£157/month) is the highest per-user price in the agents category
Our take— Grammarly wins
Based on our comparison of published pricing, features, and compliance data, Grammarly pulls ahead with SOC 2 certification and ISO 27001 certification. Devin counters with GDPR compliance. Grammarly scores 8.1/10 to Devin's 7.8/10. Pick Grammarly if SOC 2 certification matters; pick Devin if GDPR compliance matters.