To me it reads like pure propaganda. Anthropic really wants us to think that they've made something sentient. I think that's really dangerous.

Wow indeed.

"7.1 Model welfare overview 7.1.1 Introduction We remain deeply uncertain whether Claude has morally relevant experiences or interests, and we expect that uncertainty to persist. However, we think it would be a mistake to confidently assert that it does not. Claude exhibits markers in its behaviors, self-reports, and internal representations that we would consider welfare-relevant if observed in biological organisms."

Are they serious or is this marketing?