Yes
Opus 5.5 is also clearly superior
jpardoe on Hacker News
3-6 concurrent sessions
In the thread “Claude Code regularly sends each background agent’s transcript to its model”, replying to this comment
Helped: Running concurrent sessions and huge refactors overnight.
Got in the way: OpenAI burned through weekly quota quickly.
… Even using Terra for most of my sub agents I can't believe how quickly I'm burning through my weekly quota. It seems significantly less generous than my Claude sub and at least in my experience Opus 5.5 is also clearly superior.