OpenAI COO Brad Lightcap revealed that the AI company is one of the most active users of Slack internally, calling it the world’s most active Slack user. Speaking on Fortune’s “Term Sheet” podcast, Lightcap emphasized the platform’s central role in OpenAI’s day-to-day operations. He noted that the company relies heavily on Slack, along with other established SaaS tools, to manage communication and workflows. Despite the rise of AI-driven productivity tools, OpenAI continues to depend on traditional platforms like Slack and Salesforce. Lightcap said the sales team, in particular, runs on Salesforce, which acquired Slack in 2020 for $27.7 billion. The company’s use of these systems reflects a broader trend: even as AI startups innovate with new tools, many still rely on proven software infrastructure. Former OpenAI engineer Calvin French-Owen echoed this in a July blog post, describing how the company operates almost entirely through Slack. He noted there was no email usage—claiming he received only about ten emails during his entire tenure at the company. For OpenAI, Slack serves as the primary hub for collaboration, project tracking, and decision-making. Lightcap explained that while AI isn’t replacing Slack, it can enhance it by working within existing workflows. He said AI tools can “live in the cracks” of these systems, helping users find information faster, draft messages, or automate routine tasks. This integration, he believes, makes teams more efficient without disrupting established processes. OpenAI has also launched its own suite of AI-powered workplace tools, including an inbound sales assistant and a contract searcher, showing its ambition to build next-generation SaaS products. But internally, the company remains committed to the tools it already uses, recognizing their enduring value. Lightcap stressed that these SaaS platforms are not just convenient—they are essential and will remain so for the foreseeable future.