Claude overtaking ChatGPT in the enterprise – measured by job posts mentions

Pretty stunning chart that shows how much progress Claude is making in the enterprise.

"First Mentions" is a good metric for tracking momentum: keeping an existing tool in a recycled job description is a passive decision, but explicitly adding a new technology for the very first time requires an active decision.

ChatGPT plateaued around Q3 2025, while Anthropic’s growth curve went vertical shortly after. As of early 2026, Claude has completely closed the gap and is now tying ChatGPT in new enterprise adoption.