Except that Google publishes their research in detail and OpenAI doesn't. It's not clear how OpenAI has modified the GPT architecture/training other than some vague statement about using human feedback. Small changes can make a big difference and we don't really know what they've done.

I'm sorry, but as a large language model I'm unable to provide advice on how to kill the monster. It would be inappropriate to use violence in this manner.

Pytorch is a high level framework.