> Slack AI – which is our generative AI experience natively built in Slack – is a separately purchased add-on that uses Large Language Models (LLMs) but does not train those LLMs on customer data. Because Slack AI hosts the models on its own infrastructure, your data remains in your control and exclusively for your organization’s use. It never leaves Slack’s trust boundary and no third parties, including the model vendor, will have access to it.
https://news.ycombinator.com/item?id=40383978