Question 1

Is Claude or Grammarly safer for work?

Accepted Answer

Claude and Grammarly are close on the facts we could verify. Check the specific tier each team would use.

Question 2

Does Claude train on your data?

Accepted Answer

Claude is low-risk for default at-work use (16/100): it trains on your data unless you opt out, and holds SOC 2 Type II.

Question 3

Does Grammarly train on your data?

Accepted Answer

Grammarly is low-risk for default at-work use (16/100): it trains on your data unless you opt out, and holds SOC 2 Type II.

Fact	Claude Low risk · 16 Anthropic · AI assistants	Grammarly Low risk · 16 Grammarly, Inc. · Writing
Trains on consumer-tier data	Opt-out	Opt-out
SOC 2 Type II	Yes	Yes
ISO 27001	Yes	Yes
GDPR DPA	Yes	Yes
HIPAA BAA	Yes	Yes
EU data residency	Unverified	Unverified
SSO / SAML	Yes	Yes
Data retention	Consumer: 30 days if training off, up to 5 years if training on; API inputs/outputs deleted after ~7 days and never used for training; safety-flagged content may be retained up to 2 years regardless of opt-out.	Unverified

Claude vs Grammarly: which is safer for work?