I'm not going to lie, one big reason I as a researcher have been a customer of OpenAI is that on their Pro plan Pro-tier model in chat and codex are decoupled in terms of billing. Anthropic instead billed you fully. This was very useful for long mathematical reasoning for me and I could attach outputs of my simulations in the context.

I also recall reading the following: https://newsletter.semianalysis.com/p/anthropic-subscription...

I will see once this transition actually happens but if another provider offers more for less and a cost of switching is inherently low as most of project lives on the disk and not in cloud, then why not move? For my workflow pro astra has been very helpful, likely will be less so if it becomes far too expensive.