Slack AI is generally safe for workplace use on a corporate plan. Our verdict for a typical 50–500 person company handling client or regulated data, assessed 29 July 2026: Approved. Slack states customer data never leaves its infrastructure and is never used to train LLMs, inside a workspace your admins already govern. Approving Slack AI is mostly a permissions audit: AI answers draw on what the asking user can already see.
This verdict reflects Slack (Salesforce)’s published terms as we read them on 29 July 2026. A vendor can change its terms the day after; the primary sources below are how you check.
| Vendor | Slack (Salesforce) |
|---|---|
| Category | Workspace AI |
| Our tier verdict | Approved (assessed 29 July 2026) — Slack states customer data never leaves its infrastructure and is never used to train LLMs, inside a workspace your admins already govern. source |
| Trains on your data? | No (per vendor terms) No. Slack states that customer data never leaves Slack-controlled infrastructure and is never used to train large language models, that AI in Slack uses off-the-shelf LLMs which are not updated by and do not retain customer data, and that it does not develop generative AI models using customer data. Separately, for its traditional machine-learning features Slack offers a global-model opt-out you must contact it to request. source |
| Data retention | Slack states that when an AI-generated summary is posted into a conversation or stored in a canvas, that message or canvas is retained under your organisation’s existing data retention settings. source |
| Admin controls | Slack states owners and admins decide which AI features members of a workspace or Enterprise organisation can use, and that on Enterprise plans org owners and admins can also limit AI features to particular users and groups. The global-model opt-out for its traditional ML features is requested by contacting Slack. source |
| Compliance certifications | Slack publishes compliance material separately; we did not verify its current certification list from a primary document on this check date. |
| HIPAA / BAA | Enterprise- or plan-dependent — Enterprise plans only. Slack states it can be configured to support HIPAA-compliant message and file collaboration on Enterprise plans, subject to agreeing to its Requirements for HIPAA Entities — and that you may not use Slack to communicate with patients or plan members. source |
No. Slack states that customer data never leaves Slack-controlled infrastructure and is never used to train large language models, that AI in Slack uses off-the-shelf LLMs which are not updated by and do not retain customer data, and that it does not develop generative AI models using customer data. Separately, for its traditional machine-learning features Slack offers a global-model opt-out you must contact it to request.
Retention: Slack states that when an AI-generated summary is posted into a conversation or stored in a canvas, that message or canvas is retained under your organisation’s existing data retention settings.
Enterprise plans only. Slack states it can be configured to support HIPAA-compliant message and file collaboration on Enterprise plans, subject to agreeing to its Requirements for HIPAA Entities — and that you may not use Slack to communicate with patients or plan members. As a rule: no signed Business Associate Agreement means no protected health information (PHI) — a BAA is the gate, not the security posture. A vendor can hold every certification on the market and still be the wrong place for PHI, because what makes PHI processing lawful for a covered entity is the contract, not the encryption.
Comparing vendors on this specifically? See BAA status for all 26 tools →
Not verified from a primary document on this check date. Slack publishes compliance material separately; we did not verify its current certification list from a primary document on this check date. Ask for the current SOC 2 report under NDA before you rely on it. A certification is also not a contract: it describes how Slack AI runs its controls, not what your agreement with them permits.
HIPAA is the gate: Enterprise plans only. Slack states it can be configured to support HIPAA-compliant message and file collaboration on Enterprise plans, subject to agreeing to its Requirements for HIPAA Entities — and that you may not use Slack to communicate with patients or plan members. Until a BAA is confirmed in writing, treat Slack AI as off-limits for anything containing PHI — patient names, appointment details, clinical notes, even "anonymized" summaries that could be re-identified.
For SEC/FINRA-regulated firms the questions are recordkeeping and confidentiality: can communications through Slack AI be captured for books-and-records requirements, and do the data terms hold up in vendor due diligence? Slack states owners and admins decide which AI features members of a workspace or Enterprise organisation can use, and that on Enterprise plans org owners and admins can also limit AI features to particular users and groups. The global-model opt-out for its traditional ML features is requested by contacting Slack.
The privilege question comes first: entering client-confidential facts into any third-party AI service must be evaluated as a potential disclosure. Slack AI’s no-training terms on corporate plans help, but confidentiality duties still require client-consent and matter-sensitivity judgment.
Every vendor claim above traces to a document the vendor publishes, and every document below is one we actually opened and read — each carries the date we read it. All of them were read on 29 July 2026. The verdict date on this page is not a build stamp and is not "today": it is the oldest of those dates, because a verdict is only as current as the stalest document under it. Rebuilding the site does not move it.
Where a fact is not in one of these documents, the page says so rather than filling the gap. That is why some rows read "not publicly documented" or "not established from a primary source" instead of naming a certification or rounding an open question to a convenient answer.
Why the tier verdict is "generic": Approved is the right starting classification for most 50–500 person companies — but a healthcare company, a law firm, and a SaaS startup should not have identical tool lists. The $79 policy kit classifies Slack AI and 25 other tools specifically for your industry, company size, and the data your team handles.
And a verdict has a shelf life: vendor data policies change quietly — a terms update can move a tool between tiers overnight. This page states what we read on 29 July 2026. The $149/mo Monitor plan exists precisely because that date keeps receding.
Slack AI is generally safe for workplace use on a corporate plan. Our verdict for a typical 50–500 person company handling client or regulated data, assessed 29 July 2026: Approved. Slack states customer data never leaves its infrastructure and is never used to train LLMs, inside a workspace your admins already govern. Approving Slack AI is mostly a permissions audit: AI answers draw on what the asking user can already see.
No. Slack states that customer data never leaves Slack-controlled infrastructure and is never used to train large language models, that AI in Slack uses off-the-shelf LLMs which are not updated by and do not retain customer data, and that it does not develop generative AI models using customer data. Separately, for its traditional machine-learning features Slack offers a global-model opt-out you must contact it to request.
Enterprise plans only. Slack states it can be configured to support HIPAA-compliant message and file collaboration on Enterprise plans, subject to agreeing to its Requirements for HIPAA Entities — and that you may not use Slack to communicate with patients or plan members. As a rule: no signed Business Associate Agreement means no protected health information (PHI) — a BAA is the gate, not the security posture. A vendor can hold every certification on the market and still be the wrong place for PHI, because what makes PHI processing lawful for a covered entity is the contract, not the encryption.
Not verified from a primary document on this check date. Slack publishes compliance material separately; we did not verify its current certification list from a primary document on this check date. Ask for the current SOC 2 report under NDA before you rely on it. A certification is also not a contract: it describes how Slack AI runs its controls, not what your agreement with them permits.
We classify Slack AI as Approved for a typical 50–500 person company, assessed 29 July 2026. Slack states customer data never leaves its infrastructure and is never used to train LLMs, inside a workspace your admins already govern. Your own classification should reflect your industry, data types, and which plan or account type your company actually uses.
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