Same experience, all my other friends in the industry report the same; at work we went from a huge push for ChatGPT last year to switching to Claude, back to ChatGPT when it became cheaper than Claude, and in parallel a deployment of open models being trialed with mechanisms to route to other models when needed (and based on pricing).
Over time I can imagine us becoming mostly open models on our deployments when hardware is more accessible and the need for expensive frontier models is constrained to very few use-cases that might demand their capabilities.
ChatGPT or ChatGPT Work or Codex? Are folks at your company still just using a chatbot to do work? (If so, this is quite surprising, as I find harness-based agent usage to be much much better than chatbotbot agent usage.)