OpenAI employees are Slacking up a storm. While AI companies say they're radically changing how we work, from work to messaging to cutting head count entirely, OpenAI is sticking with one classic workplace tool — and they use it a lot. OpenAI COO Brad Lightcap said his company had high-frequency Slackers on Fortune's "Term Sheet" podcast. "We are probably the world's most active users of Slack internally at OpenAI," Lightcap said. OpenAI's sales team also "runs on" Salesforce, Lightcap said.