I'm having an hard time getting my mind to see this.

> Users should re-tune their prompts and harnesses accordingly.

I read this in the press release and my mind thought it meant test harness. Then there was a blog post about long running harnesses with a section about testing which lead me to a little more confusion.

Yes, the word 'harness' is consistently used in the context as a wrapper around the LLM model not as 'test harness'.