Not legal advice · Summaries of vendors' public pages, which change often. Verify with the vendor and your contract before relying on anything here.
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Does Slack AI train on your data? (Business plans)

Salesforce (Slack) · Collaboration · Last verified

Trains by default

Trains on business data unless you opt out.

Short answer: Yes, opt-out

Generative AI: no (Slack will not use Customer Data to train generative AI models without opt-in). But Slack's non-generative 'global' ML models (e.g. channel/search recommendations) use Customer Data unless you contact Slack to opt out.

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

Why this matters: Data used for training can't be pulled back out of a trained model, so opting out only protects what comes after. Why training matters →

7/7 assurances found·9 of 9 fields confirmed from vendor pages

Below: retention, SOC 2, ISO 27001/42001, DPA, BAA, data residency and zero-retention for Slack AI, each linked to Salesforce (Slack)'s own page.

Summary of Salesforce (Slack)'s public pages as of Oct 17, 2026. Not legal advice: terms vary by plan and contract and can change. Confirm with Salesforce (Slack) before relying on it.

Trains on your data by default

Yes, opt-out

Generative AI: no (Slack will not use Customer Data to train generative AI models without opt-in). But Slack's non-generative 'global' ML models (e.g. channel/search recommendations) use Customer Data unless you contact Slack to opt out.

Source:

Data retention

Ephemeral for summaries/answers

LLMs do not retain data after the request; summaries and search answers are ephemeral.

Source:

SOC 2 Type II

Yes

SOC 2 (Type II).

Source:

ISO/IEC 27001

Yes

ISO/IEC 27001 certificate.

Source:

ISO/IEC 42001

Yes

ISO/IEC 42001 certificate.

Source:

DPA available

Yes

Slack Data Processing Agreement.

Source:

BAA / HIPAA

Yes

Slack can be configured for HIPAA compliance.

Source:

Data residency options

Yes

Data Residency offering listed on compliance page.

Source:

Zero-retention option

Yes

LLMs hosted in Slack's cloud infrastructure do not retain Customer Data after a request.

Source:

Vendor pages we monitor for this tool

We save a fingerprint (SHA-256 of the page's visible text) on every check so we can spot when a vendor edits its terms.

PageCheckedFingerprint
https://slack.com/trust/data-management/privacy-principlesOct 17, 20260fc210531535…
https://slack.com/help/articles/28310650165907-Security-for-AI-features-in-SlackOct 17, 2026e4ef86992a70…
https://slack.com/trust/complianceOct 17, 202672b875a9cceb…

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