I'm _almost_ completely off Opus now and on GPT 5.5.
"low" or "none" effort most of the time.
"medium" effort for planning / troubleshooting.
I never use "high" or "extra high". Not enough benefit there.
Still using Opus 4.6 for design. GPT just can't do that job yet.
GitLab was designed by developers with no eye for design but think they do. The UX is atrocious as if they never used their own product.
I'd let GitHub lose another 5-10% uptime before I'd consider switching to BitBucket before I'd consider GitLab.