# Slack — Does this vendor train AI models on your data? Per-product, per-tier, quoted from the current policy

For Slack, product or service is predictive models for features such as emoji and channel recommendations; trains on your content by default? is yes; what the policy says is We do not develop generative AI models using Customer Data. To develop predictive models for features such as emoji and channel recommendations, our systems analyze Customer Data (e.g. messages, content, and files) submitted to Slack as well as Other Information; how it is controlled is If you want to exclude your Customer Data from helping train Slack global models, you can opt out; document is Privacy Principles: Search, Learning and Artificial Intelligence, recorded from its source on 2026-08-10.

- **Vendor:** Slack _(verified: appears in the quote below)_
- **Product or service:** predictive models for features such as emoji and channel recommendations _(verified: appears in the quote below)_
- **Trains on your content by default?:** yes _(our reading, not quoted from the source)_
- **What the policy says:** We do not develop generative AI models using Customer Data. To develop predictive models for features such as emoji and channel recommendations, our systems analyze Customer Data (e.g. messages, content, and files) submitted to Slack as well as Other Information _(verified: appears in the quote below)_
- **How it is controlled:** If you want to exclude your Customer Data from helping train Slack global models, you can opt out.
- **Document:** Privacy Principles: Search, Learning and Artificial Intelligence _(verified: appears in the quote below)_

## What the source says

> We do not develop generative AI models using Customer Data. To develop predictive models for features such as emoji and channel recommendations, our systems analyze Customer Data (e.g. messages, content, and files) submitted to Slack as well as Other Information

## Source

- https://slack.com/trust/data-management/privacy-principles

Last verified: 2026-08-10. Review by: 2026-10-09.
Part of [Does this vendor train AI models on your data? Per-product, per-tier, quoted from the current policy](https://referencesource.org/ai-training-data-use-by-vendor/).