Does Claude train on my data?

The short answer depends on your plan. Here's each Claude plan, graded from Anthropic's own policy pages.

C Claude Free / Pro

Why this grade: Training depends on a user setting whose default isn't stated. Safety-flagged chats and feedback may be used. If training is on, data can be kept up to 5 years.

Trains on your data by default	unknown (training is a user setting; default not stated)
Can you opt out?	yes
How to opt out	Privacy Settings → model improvement → off, or use Incognito chats.
Admin can enforce settings	no
How long data is kept	Deleted chats removed from back-end within 30 days; up to 5 years de-identified if training is allowed
Human review	Safety-flagged chats may be reviewed
DPA available	unknown
SOC 2	unknown

"We will use your chats and coding sessions (including to improve our models) if: You choose to allow us"

Source: https://privacy.anthropic.com/en/articles/10023580-is-my-data-used-for-model-training · checked 2026-10-16

A Claude Team

Why this grade: No training by default, DPA built into Commercial Terms, SOC 2 Type I & II and ISO 27001 (Anthropic Privacy Center).

Trains on your data by default	no
Can you opt out?	n/a
How to opt out	unknown
Admin can enforce settings	partial (admins can disable feedback)
How long data is kept	Chats kept in the product for history; custom retention on Enterprise only
Human review	unknown
DPA available	yes (built into Commercial Terms, with SCCs)
SOC 2	yes (Type I & II); ISO 27001, ISO 42001

"By default, we will not use your inputs or outputs from our commercial products ... to train our models."

Source: https://privacy.anthropic.com/en/articles/7996868-is-my-data-used-for-model-training · checked 2026-10-16