Anthropic in a blog post said Claude will remain ad free and its users won't see sponsored links adjacent to conversations. The move highlights how Anthropic and OpenAI are carving out different strategies with the former focused on business usage.

"We want our users to trust Claude to help them keep thinking—about their work, their challenges, and their ideas.

Our experience of using the internet has made it easy to assume that advertising on the products we use is inevitable. But open a notebook, pick up a well-crafted tool, or stand in front of a clean chalkboard, and there are no ads in sight.

We think Claude should work the same way."