As a matter of interest are you using the copilot cli?

yeah. copilot cli using opus 4.6 vs claude code using opus 4.6

If you could share I’d be really interested in hearing a concrete example of the two behaving differently. I work in Microsoft (not on copilot - though I’m an heavy user, and use Claude code in a personal capacity) and would be quite happy to repro and report back to the copilot cli team who are responsive.