Claude Max 20x and Anthropic training policy

anthropic-max-training-b1RR.md

Claude Max 20x and Anthropic training on your data

Not "never," no.

If you're on Claude Max 20x, Anthropic treats that as a consumer plan, and their own privacy docs say they may use your chats/coding sessions to improve models unless you turn that off — with a couple of carve-outs where they may still use data anyway.

Canonical proof from Anthropic

Max is a consumer plan

Anthropic's help article says:

"This article is about our consumer products such as Claude Free, Pro, Max..."

Source: https://support.anthropic.com/en/articles/7996868-i-want-to-opt-out-of-my-prompts-and-results-being-used-for-training-models

For consumer plans, they may use your data

Anthropic says:

"We may use your chats or coding sessions to improve our models, if:

1. You choose to allow us to use your chats and coding sessions to improve Claude,
2. Your conversations are flagged for safety review,
3. You've explicitly provided materials to us (e.g. via our thumbs up/down feedback button),
4. By otherwise explicitly opting in to training..."

Source: https://support.anthropic.com/en/articles/7996885-how-do-you-use-personal-data-in-model-training

Their privacy policy says the same thing more bluntly

Anthropic's privacy policy says:

"We may use your Inputs and Outputs to train our models and improve our Services, unless you opt out through your account settings."

And also:

"Even if you opt-out, we will use Inputs and Outputs for model improvement when: (1) your conversations are flagged for safety review... or (2) you've explicitly reported the materials to us..."

Source: https://www.anthropic.com/legal/privacy

How to opt out

Anthropic says:

"If you decide to turn off the model training setting, we will not use any new chats and coding sessions you have with Claude for future model training."

But also:

"If our safety classifiers flag your conversations, they may still be used..."

Source: https://support.anthropic.com/en/articles/12109829-how-do-i-change-my-model-improvement-privacy-settings

Incognito chats exception

Anthropic says:

"Your Incognito chats are not used to improve Claude, even if you have enabled Model Improvement..."

Source: https://support.anthropic.com/en/articles/7996868-i-want-to-opt-out-of-my-prompts-and-results-being-used-for-training-models

Bottom line

• Claude Max 20x: yes, Anthropic can train on your stuff by default / with model improvement enabled.
• If you opt out: they say they won't use new chats for future training.
• But not absolute "never": safety-flagged conversations and explicit feedback can still be used.
• If you want the strongest clean answer: use Incognito chats for consumer Claude, or use commercial/API products, where Anthropic says by default they do not train on your inputs/outputs:
  • https://privacy.anthropic.com/en/articles/7996868-is-my-data-used-for-model-training

One-line answer

No — with Claude Max 20x, Anthropic does not promise "never." They explicitly reserve the right to use data in several cases.