On what planet has AI under-delivered since 2021? Because it certainly isn't planet Earth.

Opus 5.5 came out around a month ago, I'd give it some time before coming to that conclusion

Amazon owns a big chunk of Anthropic. Plus they benefit from the rise of open models. They're being prudent.

Half a decade? More like 60 years.

Actually AI has been over promising and under delivering for about 70 years. Whether or not you think the juice is finally worth the squeeze, the distance we've come is impressive.