Do you have example, open source you make using non-interchangeable model, that you can not make using other model?

That wasn't my point, my point was that open models can technically do everything but they make mistakes more often. As an example imagine Opus makes a mistake every 5 prompts and Deepseek every 20. Because you still have a human in the loop, you tell it to fix that mistake and it does, but it's time wasted or bugs sneaking up on you.

Having said that, I was working on an AI for a certain video game, and I had Astra 6 and Sol 6/6.1 work for 30 hours straight, with some human steering to get it unstuck every now and then. It could not get it to work right, and the code it created was a mess.

When Opus 5.5 came out in like 4 hours it cracked it.

I didn't try but I'm very confident if Astra failed, the open models would've failed too.