Anthropic on Tuesday launched Claude Tag, a new product that embeds its most advanced AI model directly inside Slack as a persistent, shared teammate that anyone on a team can delegate work to by simply typing @Claude. The product, available today in beta for Claude Enterprise and Team customers, replaces Anthropic's existing Claude in Slack app. Anthropic says 65% of its own product team's code is now created by its internal version of Claude Tag. The product runs on Claude Opus 4.8, the model Anthropic released less than a month ago. Four capabilities differentiate Claude Tag: it is multiplayer, with one Claude interacting with everyone in a given Slack channel; it learns over time, accumulating context about the work happening there; it takes initiative, with ambient behavior enabled; and it works asynchronously.