I tried almost all OS models on opencode, none of them is on levels as opus 4.7.

In latest experiment I used opus for implementation plan then used cursor composer 2.5 for execution.

I must say that combo is really good. Main drawback of claude code is that is super slow. So when paired with composer that is super fast it flies.

No one is claiming that OS is as good. They are saying it isn't that far behind SOTA commercial products. So why pay exorbitantly just to get something only a few percent better than the free option?

But there have been very good open source office apps for decades and few enterprises use them, so perhaps this is just the nature of B2B purchasing committees and 'nobody getting fired for buying IBM.'