Recently ChatGPT released an Ultra mode, it's "highest-capability setting, coordinating multiple agents across parallel workstreams to finish complex tasks faster" on their latest flagship product Sol of GPT-5.6. Similarly, Claude Fable also has an Ultra setting.

I wonder what are primary workflows or use-cases this maximised modes are used for currently? In my average software development experience, I never had a need to go beyond the max mode or beyond Opus for example. Even in specific workflows, the model's capability rarely mattered as compared to the harnesses or the context.

Are there any specific industries (finance, lifescience, etc.) that uses these max modes regularly or for specific workflows? Curious to know if anyone's making use of these and would like to share how you're using it.